If you’re making your own PCBs for through-hole projects at home, getting the board etched is only half the battle; you’ve still got to drill all those little holes. It’s a tedious process, and if you’ve got a lot of them, doing them freehand with a drill just isn’t going to cut it. Which is why [Ruchir Chauhan] built this tiny 3D printed drill press.
This design is actually interesting for a number of reasons. The fact that it’s primarily 3D printed is a big one, though of course it’s not the first time we’ve seen that. We also like the minimal part count and low-cost, which is sure to appeal to those looking to produce PCBs on a budget. But the most impressive feature has to the hydraulic system [Ruchir] has come up with to actually do the drilling.
Rather than pulling an arm to lower the bit towards the work piece, a system utilizing four syringes, some water, and a bit of tubing is used to pull the tool down. This might seem extravagant, but if you’ve got a lot of holes to drill, this design is really going to save your arms. This method should also give you more consistent and accurate results, as you won’t be putting any torque on the structure as you would with a manually operated press.
[Ruchir] doesn’t offer much in the way of instructions on the project’s Hackaday.io page, but once you print out all of the provided STLs and get your syringes ready to go, the rest should be fairly self explanatory. Personally we might have added a smooth steel rod in there to make sure the movement is nice and straight, but we can see the appeal of doing it with a printed part to keep things cheap.
Looking for more ideas? If you’re after something a bit larger we might suggest this one made from PVC pipes, and this 3D printed desktop press would look good on anyone’s bench. Just don’t blame us if your arms get tired.