Circle Cutter for cutting centering rings from cardboard or balsa

Protractor cutter to cut discs and other circular parts from cardboard, light wood or drawing paper.

45 Degree 10pcs Summa Plotter Vinyl Cutter Knife Blades +1pc Summa Blade Holder Cutting Milling Carving Tool - AliExpress

Precision Foam Circle Cutter for Proxxon Hot Wire Cutter

How to Cut Perfect Circles in Cardboard with a Knife (No Special Tools)

Lion EV-R-Round Circle Cutter

$5 HeliRocket - Make

Best technique and tools for making wood centering rings? (BT80 and smaller)

Make Your Own Kraft Paper Tubes : 8 Steps (with Pictures) - Instructables

Simple Circle Cutter – Stockroom Supply Tools

Miscellaneous Cutters @ Raw Materials Art Supplies

Circle Cutter, Circle Paper Cutter, Circular Paper Cutter, Craft Circle Cutter, Adjustable Circle Cutter Tool for Paper, Compass Cutting Tool, Cutting Diameter 4'' to 12.5'' : Arts, Crafts & Sewing