Simple Plasma Cutter Collision Detection System

Machine tools often have powerful drive motors, allowing them to work quickly and accurately to get the job done fast. However, this can cause major damage if the tool head collides with an unexpected object. To protect against such occurances, [Xnaron] developed a simple system to shut down his plasma …read more

Continue reading Simple Plasma Cutter Collision Detection System

No Assembly Required for this Compliant Mechanism Dial Indicator

If you’ve ever had the good fortune — or, after a shop mishap, the misfortune — to see the insides of a dial indicator, you’ll know the workings of these shop essentials resemble nothing so much as those of a fine Swiss watch. The pinions, gears, and springs within transmit …read more

Continue reading No Assembly Required for this Compliant Mechanism Dial Indicator

Open Source Pick and Place Has a $450 BOM Cost

Give your grizzled and cramped hands a break from stuffing boards with surface mount components. This is the job of pick and place machine, and over the years these tools of the trade for Printed Circuit Board Assembly (PCBA) have gotten closer to reality for the home shop; with some …read more

Continue reading Open Source Pick and Place Has a $450 BOM Cost

Screwy Math For Super Fine Adjustments: Differential Screws

For any sort of precision machine, precision adjustability is required. For the hacker this usually involves an adjustment screw, where the accuracy is determined by the thread pitch. This was not good enough for [Mark Rehorst] who wanted adjustment down to 10μm for his 3D printer’s optical end-stop, so …read more

Continue reading Screwy Math For Super Fine Adjustments: Differential Screws

Motorizing a Plasma Cutter on the Cheap

A hand-held plasma cutter is an excellent tool to have if you are working with sheet metal, but it’s not particularly well suited to making long or repetitive cuts. Which is why [workshop from scratch] worked his usual scrapheap magic and built his own motorized track for making perfectly straight …read more

Continue reading Motorizing a Plasma Cutter on the Cheap