I'll agree.? Other than what's mentioned, I've done two layer
boards at home.?
Problems are:
1) you can't do vias under chips unless the chips are DIL.
2) the vias have to be fairly large for you to be able to solder
to them.
3) lacing wire through 200 holes is a pain.
4) No way to do 4 layer boards, or even 3 layer boards.? Yes, you
can, but you're going to have to drill a pit in the top layer and
run a wire jumper to a pad.
5) most automatic routers assume you're going to a commercial PCB
manufacturer, and route the board accordingly.? You're likely to
need to manually route the boards.? (Vias underneath chips
(fixable), close pad spacing, etc.? You can do it, likely enough,
but will the design autoroute?)
We won't talk about the problem in getting the top and bottom
layers registered, however you decide to do it.
My immediate response is that past a certain level of complexity,
making your own boards needs stuff you don't have, and is a
significant investment (chemical baths to plate through holes,
upside down drills to accurately drill holes (did that one....),
and the like.? Even the tin-lead plating involves chemicals that
seem to be nasty.
all of this VERY much depends on the level of complexity of your
board.? Me?? I've moved to Chinese made boards with 6 mil traces,
TQFP-144 chips and plated through holes.? I don't know how to make
them myself.
Harvey
On 6/13/2020 4:48 PM, Lee Studley
wrote:
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>From a pro,
If its only 2 layers and you insist on real through hole, it's
most time and cost effective to just have them made at an online
boardhouse( dirt cheap).
Otherwise the threading a long length of fine wire and soldering
if wave soldered, then snipping, or if smt, as a post-task is the
way to go.
If more than 2 layers, get them made.
?
