Ken Gerber said:
I have heard some people make there own PCB's using copper clad board
and a dremel tool.
Does anyone have any experience or hints regarding this technique?
I can imagine it might work better by placing the drill in some kind
of stand like a router to maintain an even depth.
Ken Gerber
I do this a lot, and have got it down to a fine art after many years,
I now have an elctric motor the type used in cordless drills/screwdrivers,
with a broken 1mm carbide milling cutter atatched directly.
the shaft and shank are both 1/8" so just needs a sleave,
its important to get it precisly true.
the broken end was cleaned up with a small diamond saw disc.
and some extra cutting edges.
the corner of the cutter is used so it can make incredibly fine cuts.
I run it at high speed, about 2x overvoltage.
and had to replace the bush bearings with double ball races.
I find it easy to use for 0.05" SOIC chips,
and also try use it for the 0.6mm pitch ics but this is rather hard,
usualy end up using a scalpel instead, its so difficult to see too.
I dont like those plastic leadless ics at all,
theyr just not suitable for hand made prototypes,
the ceramic ones dont seem to bad although stil tricky.
ive made such a pcb for a dspic33 with 64pins.
I just use it in hand. being small and able to hold it close to the work end
its easy to control.
I only make small pcbs,
basically just the pads to mount ICS and SM components,
many tracks can be made quite short,
any long tracks are done with .2mm ec wire.
best thing is you can build one part of the circuit and debug it and add
components
easily by just cutting more pads/tracks, then put the next part of the
circuit next to it.
oh and I find its best to use a mask.
Colin =^.^=