General > General Technical Chat

The way things used to be.

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SeanB:
Was looking through some old files, and found these oldies, a reminder of the first PCB set I made. Done with home etched boards, and toner transfer, using an electric clothes iron to do the transfer from the overhead transparency sheet to the PCB material. Still got the PCB drill I used, along with the loads of tiny fragile drill bits that you used to make the holes, and hoping you would not break all those fragile drill bits before you ran out of bits, with holes still left to do.

Pre CAD, and I did the originals on graph paper, reversed so the lines were faintly visible, but would not copy through, and then with some permanent marker pens to do corrections.

soldar:
if it was a one-off I often drew it directly by hand with a water-resistant marker pen; if I expected to do more than one I most often used the UV photo-sensitive system.

What a pain!

tggzzz:

--- Quote from: SeanB on October 03, 2023, 11:54:50 am ---Was looking through some old files, and found these oldies, a reminder of the first PCB set I made. Done with home etched boards, and toner transfer, using an electric clothes iron to do the transfer from the overhead transparency sheet to the PCB material. Still got the PCB drill I used, along with the loads of tiny fragile drill bits that you used to make the holes, and hoping you would not break all those fragile drill bits before you ran out of bits, with holes still left to do.

Pre CAD, and I did the originals on graph paper, reversed so the lines were faintly visible, but would not copy through, and then with some permanent marker pens to do corrections.

--- End quote ---

For older techniques I used, see https://entertaininghacks.wordpress.com/2015/02/21/a-40-year-old-hack-disinterred/

Professionals used rubylith red and blue tape. https://www.microwaves101.com/encyclopedias/rubylith

Brumby:
Dalo pen.

Ugly, but it worked.

Berni:
I was doing the UV process instead because i didn't have a laser printer.

Sure don't miss those days. The mess from all the chemicals and that irritating FR4 dust from drilling. Even used ferric chloride at first.

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