Of all of the strategies of creating large items of steel into smaller items of steel, maybe none is extra attention-grabbing than electrical discharge machining. EDM can be notoriously fussy, what with having to regulate an arc discharge whereas exactly positioning the software relative to the workpiece. Nonetheless, some house avid gamers give it a whirl, and we like to share their successes, like this work-in-progress EDM machine. (Video, embedded under.)

We’ve linked [Andy]’s first movies under the break, and we’d count on there might be a number of extra earlier than all is alleged and accomplished. However actually, for being pretty early within the venture, [Andy] has made loads of progress. EDM is principally utilizing an electrical arc to take away materials from a workpiece, however as anybody who has unintentionally carried out EDM on, say, a screwdriver by shorting it throughout the terminals in a stay outlet field, the method must be managed to be helpful.

Half 1 reveals the beginning of the construct utilizing an previous faucet burning machine, a 60-volt energy provide, and a easy pulse generator. This was sufficient to experiment with the fundamentals of each the mechanical management of electrode positioning, and {the electrical} features of getting a sustained, helpful discharge. Half 2 continues with refinements that led in a short time to the primary helpful elements, machined rapidly and cleanly from skinny inventory utilizing a customized software. We’ll admit to being impressed — many EDM builds both by no means get to the purpose of creating easy holes, or cease when progressing past that preliminary success proves daunting. After all, when [Andy] drops the truth that he made the buttons for the management panel on his do-it-yourself injection molding machine, one will get the sensation that something is feasible.

We’re wanting ahead to extra on this construct. We’ve seen a few EDM builds before, however none with this a lot potential.

Continue reading “Homemade EDM Machine Moves From Prototype To Production”



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