On Fri, 4 Jul 2008 13:14:10 -0500, you wrote:
>>>I use eyelets (0.050 diameter), copper, and then separate vias
>
>What do you mean "separate vias" ?
A via is used only to connect the top and bottom layers, but not at a
parts lead. That way, I do not have to worry about the hole in the
eyelet.
>
>>>allows me to use a small (!) ball peen hammer and a block of aluminum
>>> or steel as an anvil
>
>can you expand a bit here ? I assume the piece of steel is flat, and
>you place your PCB with
>the eyelet in place on top of it.
That's correct, rolled side down, of course.
>Then you use the hammer to form the other side of the eyelet ? Do you
>use any other tool along with
>the hammer to punch on the eyelet and form it ? or just the hammer is enough ?
The ball peen hammer is enough, I use something about 5 oz or so, and
the round end. With a little practice, you'll swage the end over
nicely without killing anything.
Pictures of the board design (not the board) are here.
You want to note the blowups at the bottom. I've arbitrarily made all
the vias square.
http://www.dragonworks.info/Electronics/making%20PC%20boards/pc_board_design.htm >
>What specific hammer do you use ( how small ). I am interested.
>
>You don't happen to have any photos do you ?
http://www.dragonworks.info/CAD-CAM-CNC/xyzr%20table/XYZR%20Table%20Controller.htmHas the start, but you really want part two, assuming that part 1
makes interesting enough reading.
I can go take a couple of pictures if you need them.
Harvey
>
>Thanks