GearHeads Corner

General Category => 3d Printers Discussion => Topic started by: ArtF on March 27, 2011, 08:02:31 AM



Title: My 3d Printer build
Post by: ArtF on March 27, 2011, 08:02:31 AM
Hi All:

  This forum will try to document my ( and Bob's) 3d printer project. We'll be using GM's gears, a robot assembly,
and various things to experimen t in the rather interesti ng world of 3d printing.

  Being the software guy, Ill be concentra ting on the control end, while together , Bob and myself will build the thing. Bobs great at implement ation.. He build up the controlle r Ill post photos of, Ive had the robot laying about for years from Ebay about 5 years back.. we finally thought of a use.. :)

 Suggestio ns are more than welcome.. arguments as well. ( Me and Bob argue all the time about the mechanics of it all..)


More to follow

Art
\


Title: Re: My 3d Printer build
Post by: ArtF on March 27, 2011, 08:16:05 AM
A few Photos of what we have so  far..

 Ive had this robotic arm for quite a while. We had to install 1/4HP servos in it as it had AC servos origninal ly with no controlle rs.
Bob did a great job building up the elctronic s box from variosu spare parts I had laying about.. SO next we're on to making a large
base to bolt it to for safety in tipping.. ITs speed is about 600IPM ( max speed at 65Khz.. could go faster..).

  I intend to hand a printer on the X carriage,.. and a thermal head.. ( and anythign else that may prove usefull . :)

 Ill use a pokeys or two, an Inket if possible, a thermal head we built and perhaps some different extruder if we come up with
one. Ill post videos and phots as we go on this thread. Shoudl be interesti ng..

 Anyway, there's a lot of Brain power around here, so feel free to kick in if you have idea's or just want to give your thoughts
onn any apect of 3d printing. .

Art


Title: Re: My 3d Printer build
Post by: danmauch on March 27, 2011, 10:13:47 AM
Here is a picture of a commercia l extruder ABS drive mechanism . They claim .005" precision .


Title: Re: My 3d Printer build
Post by: stephenmtate on March 27, 2011, 10:32:14 AM
Please take some extra time to search potential materials .  Some shrink as they cool and this creates problems.  I would love to see something that could be used to create masters for lost wax (or other media) casting. 


Title: Re: My 3d Printer build
Post by: BobL on March 27, 2011, 11:12:43 AM
stephenmt ate;

 I've read about of thjis plastic shrinking phenomena also.. I'm sure we will be faced with many issues before it's all done...lo l  I also heard that liquefied wax could work in a jet cartridge, just need to be cooled rather quickly to hold shape..If technolog y could be tweaked and refined properly, perhaps wax molds could be made quite easily at that point. As to Art's point "Suggestio ns are more than welcome.. arguments as well. ( Me and Bob argue all the time about the mechanics of it all..)" I would not want to have it any other way, it's called construct ive arguing, so much to learn from...

Cheers
Bob  ;)


Title: Re: My 3d Printer build
Post by: dansfoundry on March 27, 2011, 11:44:44 AM
Art, Bob, stop it, you're killing me ,about the time I think I should concentra te on existing projects you guys tempt me with yet another fascinati ng idea. So much fun so little time. At least I wont be bored for the next 10-15 years. ( don't stop!!!) ;D Dan


Title: Re: My 3d Printer build
Post by: Enjenjoe on March 27, 2011, 03:37:52 PM
http://epsondevelopers.com/home
I found this art its the developer s site with the code for there printers.
I'm hoping that you can figure out the interface needed and release a new software for the printers like Mach for printers
The DTG, 3D printing and Flat bed printer could sure you this software
The 3D that I have seen use the ink jet to deposit a liquid hardener, One I found that Graham had built used corn flour and ink to create a 3d image.
The new UV printer look like it might work. They use the same print head as the 4800 epson with a UV light to harden the polymer.
The Extrude  design is Nice but the resolutio n or finish has been the challenge . With a Ink jet the piece could be colored to show the finished product
Free epson Manuals  At http://www.t-shirtforums.com/diy-dtg/t134847.html

Also Art how far past the border at Alex bay do you live or are you closer to Buffalo.
Thanks Randy
AKA Enjen Joes


Title: Re: My 3d Printer build
Post by: ArtF on March 30, 2011, 07:34:29 AM
Hi Randy:

  ( I live as far east as you can get.. long ways from Buffalo.. :)


 I got a HP inket this week and disassemb led it.. looks like it will work for
printing on powder, but I havent yet played with interfaci ng..

  Im in the throws of writing a Mach3 driver for the Mesa 5i20 card.. this would
give me 48 more outputs and 24 more inputs to Mach3.. something I may use for
the 3d printer project..

   Ill post a few pics of the disassemb led InkJet as soon as I can.. Im on 3 projects at the moment, thought the mesa project is getting close to done, leaving me with only GM and 3d printing. . kinda related to each other.. So things will move faster soon.

Thx
Art


Title: Re: My 3d Printer build
Post by: John S on March 30, 2011, 07:53:39 AM
Main forum page.

3d Pinters Discussio n

It's pRinters you plick.   ;D


Title: Re: My 3d Printer build
Post by: Enjenjoe on March 30, 2011, 06:49:52 PM
Then your closer to the Thousand Islands then.
a epson print head might work better as the hp only shoots dyed water. the epson be shooting just about anything that's a liquid


Title: Re: My 3d Printer build
Post by: ArtF on March 31, 2011, 08:16:47 PM
Hi:

 Be awhile before I know for sure.. I got an inket this week and tore it apart.. Im thinking it may work fine..

Not much in them these days.. but it looks foolable. .

Art


Title: Re: My 3d Printer build
Post by: Ya-Nvr-No on April 02, 2011, 08:11:34 AM
I am a member of this engineeri ng site
Thought you might be intereste d in this site and discussio n.

http://www.engineeringexchange.com/profiles/blogs/the-end-of-manufacturing-as-we


Title: Re: My 3d Printer build
Post by: BobL on April 02, 2011, 01:11:20 PM
Ya-Nvr-No ;

 Will take a look..Tha nks for the post.


Cheers
Bob


Title: Re: My 3d Printer build
Post by: vmax549 on April 04, 2011, 02:51:23 PM
HI ART, will the new driver be a full fledged driver or just for 3d printing.  Will it allow the spindle to gear to the Z? for rigid tapping and threading?

(;-) TP


Title: Re: My 3d Printer build
Post by: ArtF on April 04, 2011, 04:24:33 PM
Terry:

 I doubt a new driver will be necessary ...a plugin perhaps. But since I know you have an interest,
the Mach3-Mesa driver isnt far away I think. We have one running now under a new driver. SO Mach3 can do 2 printer ports combined with 3 24 bit IO's very shortly. That shoudl be enough to get doen what I need to do.

Art


Title: Re: My 3d Printer build
Post by: stephenmtate on April 05, 2011, 10:58:58 AM
Here is an interesti ng and cheap media mix.  Benefiber (solid) and vodka (binder)...  I'll leave it up to someone else to add a punch line... ;~)     

http://ceramicartsdaily.org/methods-techniques/the-printed-pot/?floater=99


Title: Re: My 3d Printer build
Post by: ArtF on April 05, 2011, 02:07:38 PM
interesti ng..

Art


Title: Re: My 3d Printer build
Post by: Ya-Nvr-No on April 07, 2011, 10:12:04 PM
Another interesti ng related article that might be of interest.

http://www.mmsonline.com/articles/aerospace-parts-from-powder


Title: Re: My 3d Printer build
Post by: ArtF on April 21, 2011, 09:47:18 AM
Hi Guys:

   Well, the building of the platform in a box is underway. . ( pics later ) , and Im working on the inket printing head that
I plan to hang from the gantry.

   I got an HP1000 printer from walmart and tore it apart. It has very few parts really that are important . I should probably have played with it software-wise first to see if I can fool it to do the required things in software, but decided insterad to see if I can build the inkjet into a box that I can hang, with the jet head hanging down to print on powder.. ( or t-shirts ) at any size the gantry can dictate.

  So.. after removing all the parts, I discover the only real impedimen t to making the injet a replaceme nt for a cnc spindle.. is the little motor that drives the carriage back and forth. It hangs down.. not good.

  Picture one shows the injet assembly laying on a plexi face plate that will form the
bottom of the box. The motor has been removed and moved to the back of the carriage. ( it used to be bolted in that round hole in the base plate upside down. ) This leaves the bottom flat with the inkjet the lowest point on the carriage.

  The following pictures show how the motor has been moved and the belt reconnect ed to the carriage. The motor wires are reversed to make the motor run backwards as its now upside down to its normal position.

  The last photo shows whats left. A circuit board, a paper drive motor and its encoder wheel, and two opto sensors.. one for paper in, and one for paper out. Once I put all this back together I'll see if I can write a driver that can print one line of output at a time on command. The theory being that this box will replace a spindle on a mill, and thus be able to print any picture to the width and length of a cnc driven gantry in single line prints at differing positions .


  Ill post more photos as I go, and will let you know if its all a waste of time due to firmware limitatio ns, or if I can fool it to be what I want it to be. :)

Price so far:

  HP1000 printer:   $28.00 Canadian.
  Acrylic sheet     $20.00 Canadian.
  Access to LAser:   priceless .

:)



Art


Title: Re: My 3d Printer build
Post by: ArtF on April 21, 2011, 09:49:08 AM
and the last photo..



Title: Re: My 3d Printer build
Post by: Dan on April 22, 2011, 02:01:44 AM
Art,

Sorry if it sounds a silly question, but how exactly does this HP Inkjet head help in making a 3D printer?

Dan


Title: Re: My 3d Printer build
Post by: ArtF on April 22, 2011, 06:27:11 AM
Dan:

  There's a few ways of making a 3d printer. Most known is extrusion, where you melt ABS or platic wire in a tube and lay it down layer by layer.. Its probably the most popular. ( We're building such an extrusion head as well , we want a dual head system in the end.)

  Another type is powder 3d.. Where you take a platform raised to the top of a box and
put a layer of powder on top about .2mm thick. Then you use an inkjet head to spray ink or binder on the powder as the layer. Lower the platform, spread a new layer, and injet it again..

   Each type has its advantage s and disadvant ages. Thermal extrusion is a bit rough. Some companies put the build platform in a heat controlle d box to keep it slightly soft during the build.. but the result is generally a bit rough.

  Powder 3d is much higher resolutio n as an inkjet head nozzles are very close together. But to do powder 3d, you need an inkjet or simular way of printing each layer into the powder. An inkjet head will "spray" ink about 5mm from its nozzles..
so thats what this device is for. Its our sprayer. Basically, all thats needed is
an injet printer but the inkjet head must be the lowest point of the printer.


   With thermal extrusion its hard to do overhangs, with powder its easy, the layers of powder support any printing on top of them. As I say each has its own limitatio ns, so we're going to build a dual head to experimen t with each. Do a youtube for 3d printing and youll see several different ways of doing it. Im intereste d in this mostly because its still in its infancy.. no-one is REALLY an expert, and many experimen ts need to be done to select good materials, inks, temperatu res, plastics etc.. Sounds like fun!

Art



Title: Re: My 3d Printer build
Post by: Dan on April 22, 2011, 01:37:57 PM
Art,

Thanks for the details. I can see now what you're trying to do. How are you going to spread the powder?

A company I used to work for had a large 3D printer which were were using for prototypi ng. They were loading it with a substance which was probably some kind of resin powder mixed with some bonding liquid. There were 2 tanks - one was filled with the actual resin that would form the part, while the other was filled with a substance that would (also solidify) act as a filler.

The head was spreading the substance s in 0.02mm thick layers and had UV lights at the bottom. The mixture was instantly curing under the UV light and the table move down by another 0.02mm and next layer was printed.

This was really a fun toy to play with. Was the fastest prototypi ng tool I've ever worked with, maintaini ng tight tolerance s. However the toughest part was removing that filler material using a water jet - especiall y in tiny holes and tight corners. Also , the materials were rather expensive - about $0.30 per gram. The largest part I've prototype d on it was roughly 30x30x10c m. The resin weighing around 1g/cc, that part cost more than $2500!! It was a few years ago though, may be the prices are a bit lower today.

Dan



Title: Re: My 3d Printer build
Post by: ArtF on April 22, 2011, 01:44:33 PM
Hi Dan:

 Im goiung to try clay powder first.. ( I have two kilns here..and a potters wheel. :) )

  But Ill try various substance s.. as long as the catalyst fits in an inkjet ..

Art


Title: Re: My 3d Printer build
Post by: stephenmtate on April 24, 2011, 02:19:01 PM
So your going to print yourself a pot, eh....?


Title: Re: My 3d Printer build
Post by: ArtF on April 24, 2011, 02:22:16 PM
I think WHAT to print will always be the issue.. more so that I cant do CAD very well.

I suspect my interest is in finding cool looking math algorithm s that define a shape..
and printing those..

Art


Title: Re: My 3d Printer build
Post by: ArtF on May 03, 2011, 12:47:23 PM
Hi Guys:

  Well, I finally finished modifying a hp1000 to do 3d printing. Ive read a lot of people running
microproc essor boards and such to fool the printer into doing other than its designed intent, but I know
most of us dont have that capabilit y. So this printer has been modified to print on the bottom of its case
so that it can replace a cnc spindle. It has no modified hardware and the paper sensor has been replaced
by a set of Gearotic gears to fool it into thinking its printing on paper..

  Heres a video fo it printing. Its ready to be hung, but before we do, we'll make another type of extrusion
head.. more on that later..

  Heres the video of the printer printing a few test pages.. the idea is to simply print a "page" that is just one
line of graphics. .then move the spindle and print another.. ect..

http://www.youtube.com/watch?v=LPKCiy-JX8E


\Art


Title: Re: My 3d Printer build
Post by: Dan on May 04, 2011, 03:30:54 AM
Good work, Art.

The gears set is attached to the printer's paper feed motor as I understan d it. but can you explain who is that it rotates in both direction s? Isn't it supposed to be rotating in one direction only? And why are you doing that?

Dan


Title: Re: My 3d Printer build
Post by: ArtF on May 04, 2011, 06:33:55 AM
Hi Dan:

   Yes, the gears are connected to the paper driver roller. ( I didnt have to redesign any of the mechanics, they all come apart when
you take apart the printer. The assemblie s, as hung, are how they appear in the printer, just rearrange d is all. (And I had to move that
pesky carriage motor from underneat h. ). The paper roller was cut short, and thats the shaft for the first gear.

   The gears are there to slow down the paper drive so I could attach a tag to drive the paper sensor. Suprising ly, the paper driver does move both ways. The inkjet cartridge has about 100 nozzles, so to do high res printing, the printer uses different nozzles and very quickly
moves the paper up and down to position for each jet of nozzles.. It isnt until you slow it down with the gears that you get to see the actual machinina tions the thing takes to print a complex line. Luckily for me you can do a line of graphics without doing that up and down
thing. The gears actually play no part in operation other than to fool the printer into thinking it has paper in it and is printing on something . It has to see the tag open to imagine that paper has entered the tag.. and after printing, it must remove the tag to see
the paper has exited. Timing isnt REAL critical, but you get a paper jam error or missing paper error if the timing isnt close.
  The gears I used seem to have done the trick in that regard. All motion though is designed into the printer.. I have no effect on it at all, I just command a print, and what you see in the video is what I get..

Art


Title: Re: My 3d Printer build
Post by: Dan on May 04, 2011, 07:43:33 AM
Thanks, Art. That' very interesti ng to learn that the paper moves back and forth. I would have never thought so.

Dan


Title: Re: My 3d Printer build
Post by: ArtF on May 04, 2011, 08:44:08 AM
Dan:

  Didnt realize it myself till I made the gearing work.. Its kinda interesti ng to see what the firmware actually does
when you play with it this way..

Art


Title: Re: My 3d Printer build
Post by: Ya-Nvr-No on May 07, 2011, 09:13:35 PM
http://www.youtube.com/watch?v=-IJk8s76zOo&NR=1

Interesti ng 3d printing printer company and material.


Title: Re: My 3d Printer build
Post by: Khalid on May 29, 2011, 06:45:00 AM
Hello Art,
Following links are must see for you...or, anybody who want to make DIY printer with commercia lly sold printers accuracy. This is just for teasing:

http://3dhomemade.blogspot.com/ (http://3dhomemade.blogspot.com/)
http://www.youtube.com/watch?v=snOErpOP5Xk (http://www.youtube.com/watch?v=snOErpOP5Xk)


Title: Re: My 3d Printer build
Post by: ArtF on May 29, 2011, 08:18:18 AM
Hi:

   Yup, seen that one a few times.. Nice option.. but UV resins are very expensive, and have a very short pot life..

Otherwise I think Id be temped to jump in on that one.. :)

Art


Title: Re: My 3d Printer build
Post by: ArtF on March 15, 2012, 11:30:00 AM
Hi Guys:

  Well, finally progress continues . Here's a photo of the new sled before wiring. We have shelved the robot arm and water idea for now, instead we decided
to go with a powder printer made from an inkjet printer. This sled you see will roll itself back and forth across a powder bed. Its a HP1000 printer ( seen earlier) but reformate d to have the paper motor roll it across a table. The Pokeys and PoKeys relay board will control reversing the printer paper motor on each sweep so it rolls one way printing on powder, then rolls backwards "printing" an empty page while actually spreading a new layer of powder. The PoKeys will control two platforms, one that rises 1/10 mm so powder is available to be spread, the other will hold the printed object and will lower 1/10mm each pass as the object builds in the powder chamber.
  This shouldnt require any firmware programmi ng, will run simply from USB on standard printer thats been fooled to run in two direction s, and the PoKeys hardware.
  So Im hoping the entire standalon e usb 3d printer will actually be able to be built for something around $250.00 all in. Then I need to make a small slicing program for the print image.. This should make it all very high res..

 Heres the first photo as the printer sled is built.

Art


Title: Re: My 3d Printer build
Post by: vrsculptor on April 01, 2012, 11:32:45 PM
Art,
I have complete faith that you could write a magnifice nt slicing program. But before you write a program please take a look at Netfabb studio basic. This is a free program that slices OBJ and STL files into SVG, DXF, PNG, BMP or PS files that should work well with the existing printer drivers. It also has tools to repair meshes. I have used it and recommend it.

Just trying to make your life a little easier... ;D

Roger


Title: Re: My 3d Printer build
Post by: ArtF on April 02, 2012, 06:57:43 AM
Thx Roger:

 Ill check it out..

Art


Title: Re: My 3d Printer build
Post by: Ya-Nvr-No on May 08, 2012, 07:08:58 AM
have you seen this project?

http://www.makermasters.com/makerslide-changing-the-way-machines-are-built


Title: Re: My 3d Printer build
Post by: ArtF on May 08, 2012, 07:18:57 AM
Hi:

  Thx, I hadnt seen it. But its a good site. In the end I biulkt my own slides from plexiglas s that worked
amazingly well, but Ive since switched to a better method of controlli ng things.. Hope to show more
soon. Its an amazingly hard thing to do ( controlli ng an inkjet properly. .) but a fun project..
 
Thx
Art


Title: Re: My 3d Printer build
Post by: ArtF on May 11, 2012, 11:18:00 AM
Hi Guys:

  I thought you may be intereste d in how my search for a personal version of a 3d printer is going.
The mechanism I built is show here http://www.youtube.com/watch?v=ejSQYs0q7UM

  Unfortuna tly, though very reliable and very cheap ( about 50 bucks to built this ), the software
I figured would draw on it just cannot be done. Also unfortuna tley it was impossibl e to know this without
trying. :) . The firmware prints two slices moving slightly between each slice, so I just couldnt stop that
behaviour so it always prints a blurred image, though its rotated right..

  Good thing is, all this experimen ting has taught us how to fool the paper sensor with a magnetic latch
sensor ( 50 cents ), so that it shoudl be very reliable on a linear platform. .so its going back on its table
to slide back and forth. We figure we can do this using nothing but the printers firmware now, so we'll still
have a cheapo tshirt printer to use as a test platform for various printing technique s. So the project is ongoing,
and starting to look good for an ink sprayer thats cheap and easy to build. ( I think I know more about inkjets than
I ever wanted to now. :)

  The printer is a 29 dollar bestbuy wireless printer.. 1 50 cent sensor , 2 small magnets.. so if it works as good linearly as it does
rotating, we''ll be at least finished playing with mechanics .. then its on to phase 2..


Anyway, just a progress report..

Art


Title: Re: My 3d Printer build
Post by: ArtF on June 10, 2012, 08:27:14 PM
Hi Guys:

   Just an update for those following this thread. Ive now moved to Laser Printers for the next experimen tal unit. And so far, it
seems like it may be a winner. Ill post pictures eventuall y, but now I have disassemb led my laser printer, removed all mechanica l
parts , rollers, clutches, toner cartidge, heaters etc.. and with the addition of a pokeys to control the mechanica l logic sensors I have
an Infra Red scanning laser unit that responds perfectly to simple print jobs sent from a computer. My next step is to replace the IR
laser diode with a UV laser diode that Im waiting on delivery.

The same PoKeys will drive a small stepper motor to sweep the laser across a plate for hardening UV curable
resin. Im real happy so far with this contrapti on, and at about 100 bucks to build it seems plausable as a very high res 3d printer.

   I think Ive found resin that should work as low as 10 bucks a litre or so, but of course many experimen ts remain to be done. So far, Ive gone
from water spraying from a fuel injector ( cheap but not very high res..) to an Inkjet printer running linearly ( paper motor too low power and too
hard to cheat ), to inkjet running in a circle ( works well but printer firmware double striking makes it too fuzzy an image) to the current
idea of a laser printers laser scanner. Its been a fun but at times frustrati ng run, but Ill keep you informed as to how it works. At the very
least it should be one of the more interesti ng things we've built..an d its been a great excuse for me to replace my old printers with new ones
so I could play with the guts of the old ones. Studying the chemistry of photo initiator s has been interesti ng as well.
This could be a facinatin g project for the DIYer if it all works out..

Art


Title: Re: My 3d Printer build
Post by: danmauch on June 11, 2012, 09:31:15 AM
 A few months ago there was quite a bit of info on UV cureable photo inhibitor s.
See http://tech.groups.yahoo.com/group/diy_3d_printing_and_fabrication/?yguid=353592670 and search for the fluids that they tested.
Dan Mauch


Title: Re: My 3d Printer build
Post by: ArtF on June 11, 2012, 09:34:13 AM
thx Dan, Ill check it out..

Art


Title: Re: My 3d Printer build
Post by: RobHopeless on June 19, 2012, 11:24:01 PM
I made this resin 3d printer but it is a little slow. I'm working on a redesign to speed it up but the laser printer scanner sounds like it may work better. http://www.instructables.com/id/Build-a-Laser-3D-Printer-Stereolithography-at-Ho/ (http://www.instructables.com/id/Build-a-Laser-3D-Printer-Stereolithography-at-Ho/)


Title: Re: My 3d Printer build
Post by: ArtF on June 20, 2012, 07:05:36 AM
Rob:

  Ive studied that quite a bit when deciding to switch to UV curable resin as a method. It really looks like
the way to go for high res stuff I want to do. Projector s look like they work well, but their spectrum is quite wrong
for the resins, so UV laser I think should work better and faster. Id also like to experimen t with the resin to see if we can
make one that has a faster exposure time, hopefully, one scan of the UV. Takes about 3 seconds to scan a page now
in infrared, but my thought is I may have to tell the scanner to print a set number of copies of each page I send. Being that
a projector is typically less than 1000 x 1000 and uses video, Im thinking a laser printers output is better controlle d and can be
used more easily as a drawing surface. Its all an open question at this point as to if a scanning UV laser has the power to cure the resin
fast enough on its scan, Ive seen multiple opinions on that. PolyVinyE ster looks promising as a medium..

Art


Title: Re: My 3d Printer build
Post by: ArtF on August 06, 2012, 01:32:40 PM
Well, some progress. Here's a video of the UV scanner myself and Bob cobbled together. Standard samsung printer
with all the guts removed and a few alteratio ns. Hope to get a scanning mechanism built for it next.

http://www.youtube.com/watch?v=cETOvlOzZ1Y


Art


Title: Re: My 3d Printer build
Post by: bosr on August 07, 2012, 09:24:30 AM
Impressiv e.  Thanks for the update.


Title: Re: My 3d Printer build
Post by: Mooselake on August 07, 2012, 02:22:16 PM
have you seen this project?

http://www.makermasters.com/makerslide-changing-the-way-machines-are-built

Check out the phlatforu m guy's version, too.  I supported them for a buck to get my foot in the door, way to little time to actually try some.  They have an add-on to standard extrusion rather than an extrusion with guides.  Hopefully they won't be overwhelm ed like Bart was with makerslid e, although it looks like Inventabl es will solve that problem at double the original price.

http://www.kickstarter.com/projects/openrail/openrail-open-source-linear-bearing-system


Kirk


Title: Re: My 3d Printer build
Post by: ArtF on August 07, 2012, 03:43:26 PM
Kirk:

  Yes, its amazing the things are coming available . Crowdsour cing looks like a great way to get an invention going.
Lots of stuff for hobbiests to do these days.. :)

Art


Title: Re: My 3d Printer build
Post by: danmauch on August 09, 2012, 10:28:27 AM
 If you need some smaller ie miciature extruded rails with trucks see http://www.microrax.com/Motion-c5/

Dan


Title: Re: My 3d Printer build
Post by: danmauch on September 03, 2012, 09:43:47 AM
 Any news on your 3d printer?
Dan


Title: Re: My 3d Printer build
Post by: ArtF on September 03, 2012, 01:33:46 PM
Dan:

   Well, as you can see from the latest video. I have a UV laser scanner built, but before mechanisi ng it so it swings across a
glass plate , I tried a few other experimen ts with the resins I intend to use. They seemed to work great, but I see they seem to
work better with UV LED's.. so.. now Im waiting for a 7" LCD monitor and some 30 candlepow er UV LED's I ordered in to see
if I can modifiy a small video monitor to give off the image in UV.. I like this idea because if it works it can be done with no mechanics
at all for the image. I suppose in the end I coulda just gotten a projector like you see others doing, but to me the whole project
has been about learnign the various ways to do it before settling on the cheapest and best working. If the monitor works it
means an entire printer could be done for about 200$ or so. Ive taken apart a few LCD monitors and it seem it shoudl work if
I just remove the lamps and put in some UV bright leds'. The LCD "should" allow enough attenuati on of the light when off
so that on segments only will harden the resin. Ive gotten my resin down to where about 20 seconds of UV hardens a small pot
of it, and I can draw a letter in the resin and pick it up after a minute or so. The resin is about 15$ a litre or so to make, much
better than the $800.00 a litre Ive been seeing elsewhere . A litre woudl make a whole lot of stuff.

   So I shoudl have my monitor in a couple weeks and Ill post how that conversio n comes out. I must say it has been fun playing
wih all the technolog ies to see how they work. Ive gone from Inkjet to Laser printer now to UV video monitor.. but its all a great
learning experienc e. In the end I hope to just have the cheapest way of doing it all. (not that Im that cheap..bu t I figure
if its cheap enough everyone will try to build one :) )


Art


Title: Re: My 3d Printer build
Post by: danmauch on September 10, 2012, 09:28:17 AM
I have been thinking about getting a chinese 80W laser cutter but you mentioned a few few weeks ago that your chinese 60 watt laser may not be producing as much power as it should. That sort of scares me. How many hours did you run it before noticeing the degradati on of the laser?

dan mauch


Title: Re: My 3d Printer build
Post by: ArtF on September 10, 2012, 09:57:59 AM
Dan:

   To be honest, Im not sure, I didnt trakc it. But it was allot. Trouble is , your never really sure what causes such a loss, or even if it really exists. I should have done some Quality checks on startup and marked them down so Id know instead of suspect. The price dif or chinese vs others makes it a no brainer to go chinese though, the longer the tube the higher the power, so you at least know your getting the right wattage. ( unless its a weak tube, and I suspect thats a it rarer than often... I changed lenses to a long focus as w3ell which may be why, and I also found my mirrors had moved quite a bit.. seems to cut better now..

Art


Title: Re: My 3d Printer build
Post by: Khalid on October 31, 2013, 09:31:20 AM
Art, why not going for Projector instead of UV led/laser etc. See B9Creator its simple. You are right though the resin is much costly.
I am planning for making 3d printer with extruder head. They are cheap and now produce more quality work.


Title: Re: My 3d Printer build
Post by: ArtF on October 31, 2013, 10:02:54 AM
Hi Kahlid:

  >>Art, why not going for Projector instead of UV led/laser etc. See B9Creator its simple. You are right though the resin is much costly.

   The resin isnt expensive really, a can of oleatic acid which turns fibreglas s resin to UV resin is about 30 dollars for enough to make 10 gallons of resin . So its about $15.00 a litre to make it including the esther resin cost.
 But, after playing with it quite a bit I decided I prefer the extruder,,resin smells terrible. The projector seems the expensive route at the time ???...

Art


Title: Re: My 3d Printer build
Post by: Khalid on November 02, 2013, 10:21:31 AM
Art Thanks for telling the secret. I dont know why then these guys selling a small bottle of UV curable resin that costly. As far as extrusion based 3d printer filament is concerned you can now make your own extruder. The filament that you currently paying for 30dollar, you can yourself make not more than 10us dollar. I think LYMAN filament extruder's  videos you have seen on youtube, its open source.
By the way thanks for taking time and replying. I really a big fan of you.


Title: Re: My 3d Printer build
Post by: Mooselake on November 02, 2013, 02:06:01 PM
Art, how much oleatic acid per liter of polyester resin?

Khalid, welcome to the forum!  Are you the Khalid with the laminar flow fountain on cnczone?

Kirk


Title: Re: My 3d Printer build
Post by: ArtF on November 02, 2013, 06:53:23 PM
Kirk:

  The stuff I used is called SunCure, its fabulous stuff, (its really just Dimenoxyb enzoyl acid) one bottle makes 10 gallons of resin, costs about 15$ for the bottle as I recall. A small UV laser diode can cure it in a minute or less, a 1 watt diode cures it in seconds.. you can buy it from surfboard makers online.)

Works on fibreglas s resin as well as polyvinyl resin. Some sell the mixed resin for over  hundred a litre, but this stuff seems to work as well as the expensive stuff at abotu 10-15$ a litre mixed..(or less).

   I find I dont use much filiment, but I have seen the extruders and I think their probably great if you use alot of filament.

  Thanks for the comments khalid, I really dont like secrets in any of this stuff, and if I can help anyone understan d something dark, it makes my day. :)
 
Art


Title: Re: My 3d Printer build
Post by: Khalid on November 03, 2013, 12:04:48 AM

Khalid, welcome to the forum!  Are you the Khalid with the laminar flow fountain on cnczone?
Kirk
Yes, the same Khalid.

@Art;
I hope you have watched this DIY filament extruder youtube video:
http://www.youtube.com/watch?v=JebhbxgjBgA&hd=1

I think using Projector is the best/fastest way for UV curable Resin based printer.