4" adjustable depth circle cutter
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This is a simple adjustable 4" circle cutter ideal for cutting paper, foil, fondant or other thin materials.
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Model information
- Source
- Printables
- Category
- Tools
- License
- Creative Commons — Attribution
This prints in place with no supports required.
Ideas for usage:
Wax paper - I built this originally to cut parchment paper squares for burger patties. It can even cut multiple circles at once by folding the paper over a few times.
Fondant - My wife used this to cut out decorative fondant circles for a cake.
Cardboard - If you adjust the knife down to its maximum depth it can cut clean circles of cardboard for crafting projects.
Scrapbooking - If you wanted to cut out a circular photo frame or picture it would be ideal for a using with a 4x6 or larger photo.
Materials:
1x - 9mm snap-off razor blade segment (Olfa or other brand)
3x - 608 bearings (preferably greaseless)
2x - m2.5 heat inserts
2x - m2.5 x 10mm bolts
Assembly Instructions:
First install 2x m2.5 heat inserts into the race ring, through the holes next to the knife pass through.
Next, put 2 of the 3 bearings onto the base, making sure they are fully pressed down.
Balance the inner ring race onto the bearings with the bolt holes for the knife holder facing upward.
Place the 3rd bearing in the slot of the race ring, and lower it and the race onto the remaining point on the base. The bearing should just fit and lock the race into place.
Insert the razor blade segment into the knife holder, with the cut out facing inwards towards the center of the ring.
Insert the razor blade through the slot in the race ring while attached to the knife holder.
Insert the m2.5 bolts through the knife holder into the inserts in the race ring.
Tighten to desired depth of cut. Recommended to set the depth shallow at first and incrementally tighten to increase depth.
Insert the knob into the race right in the hole near the knife holder.
Usage Instructions:
Simply lay the cutter over the circle material you wish to cut.
Hold the base down by the edge to prevent shifting during cut.
Rotate the knob 360 degrees around in a circle, the knife will cut a clean 4" hole.