Brother HL-2040 and Harbor Freight Catalog - Toner Transfer photos
2006-07-25 by kilocycles
Hi all, I added a couple of finished boards the the Photos section, using my catalog paper for TT. After etching, I had a few places where copper shouldn't have been, and I crudely tried to rout out the traces using the Dremel tool drill press and a router bit...won't do that again. Also, I won't drill boards while wearing my one-for-close-vision, one-for-far-vision contacts again. Very poor depth perception through the flip-down magnifier. The 2 photos are of a completed sidetone and transmit/receive relay board; and a low-pass filter board, with 8 relays and a bunch of silver mica caps to go in on that one. I pre-drilled some alignment holes in the bottom layer for top layer track alignment for TT'ing the image. I almost got that one single-sided, but I have one top layer track each along the two board edges running under the eight relays supplying power to the coils. The lettering is pretty clear on both boards, even the + and - symbols for bottom mounting SMD diodes for each relay coil on the larger, squarer of the two boards. One other thing I've noticed. If my boards aren't perfectly free of chemicals after etching, applying Future brand acrylic floor finish seals in the chemicals and allows corrosion and discoloration to take place. Some of that is evident on the sidetone & relay board photo. Photos are in the Ted-KX4OM album. Ciao, Ted