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Filament straightener

by kwatts, published

Filament straightener by kwatts Sep 19, 2012

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17914Views 899Downloads Found in 3D Printer Accessories
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Summary

One of the biggest problem i have with my bowden tube feed extruder is plastic that has kinks or bends in to, this gets stuck in my feeder and causes the filament to grind.

So taken from the idea of a wire straightener , here is my filament straightener.

i haven't had any grinding problem since starting to use it.

I find that after slicing my object, I then know how much filament is needed and then pull that amount through and then back and recoil it on the spool.

When using semi translucent plastics, running them through the straightener will turn them slightly white as is bends the plastic. But this colouration goes away after the plastic has been heated.

Instructions

Bom:

6x m3 20mm

6x m3 nuts

6x m4 washers

6x u grooved bearings, id 3.5/4mm, od 25.5, od inside the groove is 19.5

I picked up these bearings from my local surplus store, they were 2$ each and they had hundreds of them. These particular bearing fit snugly around 3mm filament.

Im currently using just 5 bearings in my configuration, this gives me the curve i want for my filament, to feed nicely through the bowden tube.

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17914Views 899Downloads Found in 3D Printer Accessories
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