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gregwar

Replace drive gear screw?

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Posted · Replace drive gear screw?

Hello,

The headless screw of the drive gear on my UM2 is damaged

What should I buy? (What is the spec or recommended spare part?)

Thanks

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Posted · Replace drive gear screw?

You mean on your feeder? The screw just left of this arrow head?

gallery_67_296_215511.jpg

I don't know the answer but everything Ultimaker seems to be metric so probably 3mm or maybe 2.5 or 2mm. Probably 3mm.

 

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Posted · Replace drive gear screw?

If you can borrow a set of hex drivers from a friend that will establish the size; RC drivers use them. The one on my printer is either 2.0mm or 1.5mm, 2.0mm I think

 

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Posted · Replace drive gear screw?

It is indeed an M3 x 3mm, I ordered some from Ali in China some time ago for spares, make sure you order ones with a flat end not a point. The first ones I ordered had a tapered point and they do not work that well so I had to file the end to get better grip on the rod from the stepper motor.

The smallest of the three hex keys supplied with the UM2 fits, 1.5mm I think

 

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