Monday, 26 January 2009

Worm Gear Filament Feed Test Bed


Here's the Worm Gear Filament Feed test bed. Constructed from laser cut acrylic.

The bracket on the right is a spare and the one on the left shows the test bed with gears, axles, O ring springs and an M3 machine screw to test the operation.

The O rings are used in place of springs and are common 16mm ID by 2.5mm. They provide the worm gears with more grip than springs and are both readily available and cheaper. They ideally need to be fitted to pulley wheels or at least collars that keep the axles square to the brackets.

This is something to be sorted that wasn't apparent until I assembled it all. I guess this is why prototyping and testing is useful.

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