Sunlu S2 Ball bearing

Edit:

V2 I modified design, and simplified it.

Get bored about spools not unroll correctly inside your Sunlu S2 dryer?

You just need 2 ball bearings of this size

Print central_roller and central_roller2.

Fit them together.

Print bearing_support_front and bearing_support_back.

Insert ball bearings inside them.

Print 49mm adapter (this is the one I need most of the time).

I designed 2 adapters for different size of spools but you can easily do your owns (I'll add required sizes later)

I highly recommend to print with PA-CF or some other heat temperature resistant filament.

PETG bolded in my case at long 70°C exposure.

Enjoy and don't forget your make!