mechanism

Attaching Motors (and Attaching to Motors)

Recently, we’ve been messing about with motors and gears at Pemtech. Students in one of my classes are building an underwater ROV, and we don’t have any decent propellers. Rather than shop for them, we’re fabbing our own with the laser cutter and Makerbot. Earlier this week, Jett worked out the proper dimensions to fit a plate to a motor shaft. He did this by measuring out a range of holes and then cutting them in quarter inch acrlyic. Once they came out of the laser, he tried pushing the motor into each of the holes until he found the ‘goldilocks fit.’ Once we had a plate, he used the same process to cut a series of holes in the plate that could be threaded with M3 screws. This setup allows us to attach anything to a motor.

Cool pop-up paper display

Cool pop-up paper display

This video from the awesome British toy store Grand Illusions demonstrates a cool collapsing mechanism, which involves only paper and elastic bands, and allows a rigid display to be set up in about a second and easily folded away again for storage. The French company that makes these is called Marin’s. (Beware, their site is […]

Round-up of gear-making books

Round-up of gear-making books

Automata artist Dug North has posted a round-up of books related to gear-making and is looking for suggestions for others. After seeing the beautiful use of gears in Bill Durovchic’s kinetic sculpture, I started looking for books on gears. The following books all look good and get great ratings from Amazon’s vast customer base. Additional […]

Creepy crawler

via miters This looks like fun. Nice project. University of Louisiana News has a decent interview with Dr. Terrence Chambers, and student Don Tamosaitis. The design draws on the work of Theo Jansen. The crawler travels about 2-3 miles/hour. There were five of us working on it, there was a lot of 3D modeling of […]