日本語
I have just produced my first board on this machine. However the track widths on the PCB do not match the widths in Kicad.
I have made a test line on the board and measured it with the microscope but the width of the line depends on the position of the tool in the tool holder. Position 1 (marking holes) has the same 8 mil universal router bit as position 2 (milling top layer) as has been requested by board master and yet they both have to be set up independently. The setting ring on the head is surely a global setting and effects all the tools place in the head. Does the router bit change it's depth whilst the board is being routed dependent on the insulation width needed or is the ring on the head the only way of setting this depth.
Can someone enlighten me?
Thanks.
- Comments(1)
A****min
Nov 15.2019, 18:17:30
any deficinecy in flatness of the pcb material will cause a shift in isolation / routing width...
you need absolutely flat pcb material and position it on top of perfectly flat carrier material. if the board can flex you are in trouble...
the depth / width of a bit is set by pushing the ring up down on the shaft of the milling bit. the milling software uses the numbers you feed it. if you tell it you set it to 8 mils while in reality it is set to 8.5 anything you mill will be 0.5 mils wider than expected ...
that is the problem with these machines. you need to be so precise and babysit the darn thing to get anything out of it that is even remotely usable.. i had a 95S ... never succeeded making one working board with it. sure , simple stuff with 12 mil tracks .. try a board with full rubout and 6 mil track and gap ... full disaster. it runs for 24 hours per side and craps out halfway through.
these machines are generally useless.
