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STL Looks OK but builds with filled shaft hole in Cubex Printer Driver
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Topic: STL Looks OK but builds with filled shaft hole in Cubex Printer Driver (Read 3050 times)
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Peter Gregory
Newbie
Posts: 5
STL Looks OK but builds with filled shaft hole in Cubex Printer Driver
«
on:
July 16, 2013, 08:43:08 PM »
I've designed a spur gear system in GM
I used GT to open the system and export the gears to STL
I opened the STL files in the Cubex Printer Driver. It looks good at this point. The shaft part is a hole.
I tell the printer driver to build the print (Slice the STL) and it builds a gear with a filled hole.
Is there a thin layer I can't see covering the hole in the STL file? ( I drilled some holes after the print)
Also, the gears seem too big or the wheel is too small - the parts can't assemble
gears1.JPG
(197.51 KB, 800x598 - viewed 414 times.)
SpurGear1.jpg
(16.57 KB, 311x286 - viewed 410 times.)
«
Last Edit: July 16, 2013, 10:38:03 PM by Peter Gregory
»
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ArtF
Administrator
Hero Member
Posts: 5720
Re: STL Looks OK but builds with filled shaft hole in Cubex Printer Driver
«
Reply #1 on:
July 17, 2013, 02:42:13 PM »
Hi:
no, the stl should have no hole in it. Ive printed dozens and all were fine.
As to fitting, you'll probably find, like I did, that youll need a specific scale factor
to make a gear come out to the right size. 3D printers arent good at proper size
reproduct
ion. I scale mine to .95 for example and then things fit.. Each machiuen is likely
different and likely different with each material type used in the print as well.
Art
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Peter Gregory
Newbie
Posts: 5
Re: STL Looks OK but builds with filled shaft hole in Cubex Printer Driver
«
Reply #2 on:
July 17, 2013, 03:14:51 PM »
I also notice the differenc
e between the tooth thickness of the STL and the printed gear.
The printed gear is not only larger, the teeth are thick.
Is there a way to adjust the tooth thickness? Make then thin so when the printer expands them they turn out right?
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ArtF
Administrator
Hero Member
Posts: 5720
Re: STL Looks OK but builds with filled shaft hole in Cubex Printer Driver
«
Reply #3 on:
July 17, 2013, 09:28:04 PM »
If its a spur, you can simple enter a smaller number than .5 in the Width box, that will shrink the tooth thickness
..
Art
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