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I've seen some recommend a filament duster. My 3d printing environment is quite dusty and I'm considering adding one.

1. Any reason to not use a filament duster?

2. What sponge/material to use as the dust wiper?

3. Should I oil the sponge or not oil it? If use oil, what type is ideal and do any of the oils interfere with any of the filament types (nylon, pla, abs, ninja flex, pva, ect)?

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Dust can definitely drag dirt into your nozzle, so adding it to your system could be a good idea. I would recommend to add this one.

Here is some additional information when you want to install it.

I would recommend to use some cloth or sponge (but not a degrading sponge which will cause little bits of sponge to travel along with your bowden tube).

For flexible materials I used to apply 2 drops of sewing machine oil in the tube for extra reduction of friction. This proved to be enough for less friction, and not undermining the bed adhesion. (If you apply too much, and the first layers are soaked in oil, they won't stick to your bed).

Some drops in your filter may help, but I don't think it is necessary for regular filament.

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