Filament Cleaner Centering hole version

http://bunkai.sakura.ne.jp/bunkai-wp/3d_printer/460/

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PRN3D?????????????????????????

It becomes the filter holder, which effectively remove dirt surface of the filament.
Please use it by inserting the appropriate sponge form.
It is for the hole type, there is a centering effect on the filter.
You have created the PRN3D for, but it is the part that can be used for general purpose