Category Archives: cutter

Dual-Wielding Robot Carves 3D Shapes From Foam With Warped Wire

“Every block of expanded polystyrene foam has a statue inside it and it is the task of the dual-arm hot wire-wielding robot to discover it.” — [Michelangelo], probably.

Be prepared to have your mind blown by this dual-wielding hot-wire 3D foam cutter (PDF). We’ve all seen simple hot-wire cutters before, …read more

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Posted in cnc, cnc hacks, cutter, expanded polystyrene, foam, hot-wire, kinematics, robot, robots hacks, styrofoam, YuMi | Leave a comment

Restoring a Rusty Rebar Cutter

We’ve all probably come across hunks of junk that used to be tools, long-neglected and chemically welded into a useless mass of solid rust. Such items are available for a pittance at the local flea market, or more likely found in an old barn or rotting on a junk pile. …read more

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Posted in compound, cutter, leverage, machining, metalwork, rebar, repair, repair hacks, restoration, teardown, tool, tool hacks | Leave a comment

Making an Ultrasonic Cutter for Post-processing Tiny 3D Prints

An ultrasonic knife is a blade that vibrates a tiny amount at a high frequency, giving the knife edge minor superpowers. It gets used much like any other blade, but it becomes far easier to cut through troublesome materials like rubber or hard plastics. I was always curious about them, and recently made my own by modifying another tool. It turns out that an ultrasonic scaling tool intended for dental use can fairly easily be turned into a nimble little ultrasonic cutter for fine detail work.

I originally started thinking about an ultrasonic knife to make removing supports from SLA …read more

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Posted in 3d printed, 3D printed supports, 3d Printer hacks, chisel, cutter, dental scaler, diy, Hackaday Columns, post-processing, removing supports, scaler, sla, tool hacks, ultrasonic, ultrasonic cutter, ultrasonic knife | Leave a comment