EAGLE PCB GCODE BOTTOM SERIES

In the picture a pcb realized in this way using old drill bits.ДЄt the end of the work, a quick sanding of the surface will clear completely the surface itself.ДЄ tester and a magnifying glass:В are necessary to check the tracks before the soldering process. The trick consists in a double pass of the pcb (with the first pass the pcb will be only scratched, while with the second pass the pcb surface will be cut). Such a kind of router bits will do their job very well at zero cost. Using a small drill we can sharp broken drill bits. The router bits: An high quality router bit, double cutter, 0.4-0.5 mm, costs a lot but it is not indispensable. If tracks are really small of very close each other the tracks can be even destroyed. During the milling process even a small difference of the co-planarity of the surface will cause a different thickness of the track. Surface co-planarity: It is really important.В On your cnc machine table look for a place with an high co-planarity. Using such nuts the speed of the cnc machine will be a little reduced but the backlash will be very closed to zero. Without considering ball bearing screws, usually too expensive (and in many cases useless) the solutions consists inusing normal tpn screwsВ (few cents of euros per meter) realizing all theВ nuts in plastic materials like delrin or teflon. The 'secret' to obtain a virtual zero backlash resides on the movements of the axis. Usually this process is done, by the cnc machine, at relatively low speed, a simple cnc machine even home made can be considered perfect for the job to be done.

EAGLE PCB GCODE BOTTOM SERIES

The whole pcb milling process, even double side, is a simple matter but it requires a series of small shrewdnesses that, if not considered, can lead to a bad realization of the printed circuit creating short circuits or malfuncionings (not wished micro-tracks or errors on the pcb itself). There are many reasons: it is a fast (no uv lamps), it is clean (no acids, no photoresist), it is cheap. It is very popular, nowadays, realize pcb prototypes using the milling procedure.

Eagle pcb gcode bottom