Rotary Tool Cutoff Saw

thingiverse

This Dremel tool accessory functions as a small cutoff saw when used with an extension shaft featuring a 1/2-inch diameter handpiece. It can efficiently slice through materials up to 1/4-inch (6mm) in diameter in one go or up to 1/2-inch (13mm) thickness by turning the stock. However, note that some extension shafts with contoured handpieces may not be compatible. To assemble, you'll require a 4-inch (100mm) length of 5/16-inch (8mm) rod, a 6-32 or M4 screw for the handpiece attachment, a 3/8-inch OD x 1.5-inch long spring, and a 2-inch by 4-inch (50mm by 100mm) clear plastic piece for a guard. The 5/16-inch hole in the base should be reamed for a tight fit on the rod, while the arm's hole must be reamed for a slip fit. Assemble the base and arm with the rod, insert the spring into the spring pockets, create a 90-degree bend on the guard, and attach it to the arm using a small screw. For optimal performance, secure the cutoff saw onto a sturdy flat base to prevent flexing and tipping. Use 1.25-inch reinforced cutting discs for efficient cutting. The creator used 3mm acrylic due to having a bender and plenty of scrap; lighter plastic would suffice as well.