[pilleya]

Originally Posted by Scoutdrago3

Hello,

I'm looking for custom 20-tooth gears that would fit with tetrix gears, but can't seem to find anything. I found some information about general specs of the gears on these forums:

I tried Amazon and a few smaller sites and can't find anything. I would just CAD it and try seeing how it holds up 3D printed, but I'm not too great with CADing custom parts, especially not gears with details specifications like that.

Something to think about is the bore that you want. I'd say that the reason 20t gears aren't available from tetrix is that the typical FTC bolt pattern wouldn't be able to fit onto the gear as a 20t 32DP gear is quite small. You will need to think carefully about what bore you need, as it might be difficult to integrate with the other parts of your mechanism.

If you are going to 3D print the gear, it would most likely be better to 3D print both the 20t and the gear that it is meshing with in a wider and most likely lower DP. A wider gear with a lower DP will reduce the likelihood of the teeth breaking.

If you need help designing the gear just send me a PM or reply.