Chris, I use a toner transfer paper mad by Pulsar, http://www.pulsarprofx.com/
Print the pattern using a laser printer and then laminate to the board. I use a ferric chloride etch and apply it with a foam paint brush. This speeds up the etching as the depletion layer is constantly removed. Details can be found at the web site above. I hav been doing this for about 10 years and have had consistently good results as long as I carefully clean the board. Hope this helps, Frank > On Fri, Jan 02, 2009 at 05:14:03PM -0500, [email protected] wrote: >> >> 1. Very fine line routing will be disappointing, it tends to push the >> coper out of the way rather than cut. This is in part due to the low >> spindle speeds. The velocity of a 1/32 or smaller mill at the cutting >> surface is quite low. A high speed spindle will help immensely. For >> wider >> lines the resolution is good enough and it is quick. > > So true. Spindle speed and runout are very important. I have good > results at 20krpm but feed rate is limited by the spindle speed. > 30krpm would be better. > >> 2. The best method, at least for me, is to use a toner transfer >> technology to produce an etched circuit and use the CNC mill to drill >> the >> holes and cut out the board. This process has a number of limitations >> but >> gives me decent boards fairly quickly. > > Interesting! I have found that this process works pretty badly and is > finicky compared to routing. Maybe I never found the right material > to print on. I only tried a couple times. > > > ------------------------------------------------------------------------------ > _______________________________________________ > Emc-users mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/emc-users > ------------------------------------------------------------------------------ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
