3B2 floppies

I know how to do it, Iv'e made plenty of boards over the years. Iv'e never heard of using packing tape as the resist. I prefer the UV-sensitive boards. For coarse-ish tracks (one track between IC pins mazimum), you can get wauy with laser printing the artwork onto paper (not film). I would love to know thew chemistry that allows coper sulpahte to disolve copper. Ferric chorlide (the common etchant) does put staisn on your fingers. No lasting damage (I hope), but not too pleasant. Gold (metal) is not hard to get, if you can afford it. But you don't want the metal for thism, you want a soluable salt. And for some reason, the one that works best is the cyanide. Not suprisingly that is very toxic and thus impossible to obtain How are you proposing to do this? What electrolyte? > > it is, however, quite easy to get header plugs of > >various sizes, including ones with wire-wrap pins. > > >If I ahd to make such an adapter in a hurry (== no time to make the > >PCB)_, I'd probably put 34 pin and 50 pin wire-wrap headers ont a bit of > >square pad board, wire-wrap approrpraity, and fit one of said adapterso > >nto the 34 pin header to conenct to the edge connector on the cable. > > If I'm following you, couldn't you cut the card edge from a busted > drive, solder that to an appropriate board (I would have to assume the > spacing is identical), solder a header connector, preferably right > angle, to the opposite side of the board, then solder jumper wires > where appropriate? Yes, you could./ But 'busted drives' roudn here genrally get repaired... -tony