For use with dollar store exacto knife ~8mm diameter. Aluminium profile 2020 will allow you to cut large circles. top knob is from my other design https://www.thingiverse.com/thing:3973133
That will allow you to put ressure on the center.
Enjoy cutting perfect circles!
Update 21 December !
New exacto holder design:
More than two years into 3d printing and designing for 3d print.My hobby, my passion.
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