![]() ![]() The key difference here is a solvent applied to the copper just before the design is laid down. First, the design is printed in reverse on dextrin-coated paper, the paper is placed down on polished copper, the entire assembly is sent through a laminator, and finally the board is etched with the chemical of your choice. This chemotransfer process is almost identical to the usual process of making a toner transfer PCB. It’s mostly a laser printer toner transfer process, but the toner is transferred from paper to copper with the help of a special mix of solvents. Here’s a technique we haven’t seen before. There are a million techniques for removing copper from sheets of fiberglass, from milling to using resist pens, to the ubiquitous laser printer toner transfer. Making PCBs with the toner transfer method has been around since you could buy your traces at Radio Shack. If you’ve been whipping up your own useful tools for the home shop, though, don’t hesitate to drop us a line! Posted in Tool Hacks Tagged drill, drill press, pcb, pcb drill Alternatively, you could use this 3D printed design to build your own as well. The total build came in at under $50 spend by the time was done. There’s a foot pedal to activate the drill which allows both hands to be used for positioning the work for added ease of use. Power is via a variable bench supply which allows for variable speed as necessary. The build also includes a bright LED in order to give you the best possible view of your work. Special care was taken to ensure the linear rail was mounted perfectly perpendicular to the base to ensure the drill doesn’t wander or splay off target.Ī collet chuck is used to center the bit as well as possible for a good price. There’s a basic DC motor, sitting on a linear rail so that it has minimal deflection in the X and Y axes as it moves up and down. The design isn’t particularly fancy or pretty, but just simply focuses on doing a simple job well. There’s often lots of drilling to be done! This PCB drill press from should help you do just that with the finesse and accuracy of a pro. Making PCBs isn’t always just about getting nice copper traces on a lovely fiberglass board. but it may well be the more elegant of the two.Ĭontinue reading “Never Drill In The Wrong Place, With This Camera!” → Posted in Tool Hacks Tagged microscope, pcb, pcb drill Oddly this isn’t the first PCB drilling microscope we’ve shown you. You can see it in glorious portrait-mode action in the video below the break. It’s a beautiful piece of lateral thinking which we like, as it ends that lottery of slightly off-centre holes. Then the board can be placed on top and the pad lined up with the crosshairs, and a perfectly placed hole can be drilled. The viewport is placed under the drill and the crosshairs on the microscope are lined up with the end of the drill. ![]() ![]() The idea is simple enough, an off-the-shelf all-in-one microscope camera points sideways at a mirror allowing it to look upwards. It’s to aid in this task that has created a camera with a periscope, to give the drill bit perfect alignment with the hole. ![]() That said, there are still plenty who etch their own boards, and for them perhaps the most fiddly part of the process comes in drilling holes accurately. It’s fair to say that one of the biggest advances for the electronic constructor over the last decade or so has been the advent of inexpensive small-order PCB manufacture. ![]()
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