If you’ve ever done any small production runs of anything that needs a bit of assembly, you know that jigs and fixtures are a huge time saver. However, these usually need to be mounted, which means you end up drilling holes in your workbench or making one-off mounting plates. [Jim Smith] is no stranger to this problem, and created the Pact Plate, an affordable modular fixture plate and is running a Kickstarter campaign to get it produced.
Each plate 150 mm × 150 mm in size with a 25 × 25 mm grid of holes with M4 threaded inserts. This allows quickly and easily mounted to and removed from the plate without the need to drill additional holes. Plates can be bolted together to form larger plates. The demo video shows him using a variety of 3D printed jigs, toggle clamps, PCB and part holders (available for download) and even a robot to quickly set up small assembly stations. This could also save a lot of time during the prototyping and development phases to hold parts in place.
[Jim]’s prototypes are all 3D printed, but want’s to get tooling made to produce the plates using injection moulding. He doesn’t say what material he intends to use, but it’s likely some type of fibre reinforced plastic. He claims the rigidity is close to that of die-cast aluminium. One addition we would like to see is some plugs for the unused hole to prevent small components from falling into them.
While fixture plates are nothing new, they are usually way more expensive than the $20 Pact Plate. There are always risks with crowd funding campaigns but it looks like [Jim] has all his bases covered pretty well. The prototyping work is done so only tooling needs to be made and samples tested, which should be fairly straight forward for a design like this.