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Ultimaker springy wheel

by yzorg, published

Ultimaker springy wheel by yzorg Nov 19, 2012
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7478Views 910Downloads Found in 3D Printer Extruders
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Summary

Wanted to have a extruder wheel that slightly gives a bit..

When thers a Pressure being built up in the filament drive, the cogwheel can jump a tooth and release that pressure.

less stress on the filament when retracting very fast and often.

maybe its good for difficult materials aswell.
i think of soft materials..

different variants provided

Instructions

First one is a bit too soft.
second one is good.

has some polygon issues i will correct.. but prints fine

Print with Hard material like the clear ones

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7478Views 910Downloads Found in 3D Printer Extruders
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Interesting. Have you tested this part extensively? Does it result in better quality parts? Would you recommend printing this in ABS or PLA? I can imagine it being a little stronger in PLA.

i printed in clear PLA. for strong springiness. should also work with ABS.
tested with many prints but not on a 48h print.. :)
i used it to get difficult materials to print.. a analog way to softer extrusion start and stops. Helps a bunch with retraction.
i dont use it much anymore.. i am more into precision prints and less into high-speed experiments now.

These wheels actually add some more softness to the acceleration of the extruder movements.

first has 8 curved 2 string spokes
second has 18 straight 1 string spokes

Most of the stress on the filament is actually due to the default extruder on the ultimaker.  If you upgrade to the one with the roller bearing, it puts a lot less stress on the entire machine.  Just make sure you get the tension tight enough.

i have the upgrade part.
and a second gregs etruder

this is for testing purpose.

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