18 Tooth GT2 Pulley
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Published on January 18, 2012
Description
Here's a printable pulley for GT2 belts with a 2mm pitch.
Updated using drofart's excellent parametric pulley design here; thingiverse.com/thing:16627/
Probably useful for anyone who doesn't want to customise the pulleys in openscad.
I'd recommend the 18 tooth pulley over the 17 tooth pulley, since I find it's harder for the belt to engage the smaller pulley perfectly. Might just be me though, let me know if you have any success with it.
Fewer teeth (More resolution) and smaller hub with two nut traps.
Updated using drofart's excellent parametric pulley design here; thingiverse.com/thing:16627/
Probably useful for anyone who doesn't want to customise the pulleys in openscad.
I'd recommend the 18 tooth pulley over the 17 tooth pulley, since I find it's harder for the belt to engage the smaller pulley perfectly. Might just be me though, let me know if you have any success with it.
Fewer teeth (More resolution) and smaller hub with two nut traps.
Instructions
Personally I print my pulleys at 100% fill. I'd reccommend using SFACT with stretch on to offset the width of your extruded plastic in order to get the printed tooth profile more accurately. I'd recommend a lower height over width radio than normal in order to get a nice consistent perimeter edge.
Printed with a Prusa Mendel with T5 belts and printed pulleys, so it is possible to print an upgrade to the GT2 pulley. Your printer needs to be very well calibrated in order to print circles which are as true as possible; oval pulleys cause all sorts of problems with backlash.
Printed with a Prusa Mendel with T5 belts and printed pulleys, so it is possible to print an upgrade to the GT2 pulley. Your printer needs to be very well calibrated in order to print circles which are as true as possible; oval pulleys cause all sorts of problems with backlash.
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droftarts
on
January 20, 2012
said:
Hi, nice work and printing. What did you model it in?
I'm currently doing an update to my openscad pulley here http://www.thingiverse.com/thi... to include many metric T and AT sizes, imperial, GT2 and HTD. Hopefully get it finished over the weekend!
OoiTY
on
January 21, 2012
said:
I was hoping that you would add a GT2 profile to that thing. :)
I modeled it in Rhino, which can export to a multitude of filetypes, but not openscad, unfortunately. You could get the .stp models for pulleys from SDP-SI's webstore. That's where I got the pulley's tooth profile from.
License
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two grub screw would be better...