Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

previous by date index next by date
previous in topic topic list next in topic

Subject: Re: [Homebrew_PCBs] immersed etching

From: "Stefan Trethan" <stefan_trethan@...>
Date: 2005-04-18

On Sun, 17 Apr 2005 18:09:20 -0400, Alan King <alan@...> wrote:

>
> Yep I'd say small to medium at most. I was thinking about picking up
> one of
> the tubes, but then it hit me duh I have a drilling machine and .010"
> drills,
> probably better to take something like an IC tube and make my own
> tests. I
> could easily put in 1000 discrete holes at patterned locations. Likely
> need
> more at the edges since they'll be spreading into areas with no bubbles.
> Actually the IC tube for .3" DIPs may be a good thing. Turned upside
> down it
> has a groove between the two humps for the DIP leads. May lose the
> bottom
> 1/4"-1/2" but that'd be ok by me for an all in one solution..
> Might still need to have the tube lower to give it time to form a good
> stream
> of bubbles, I may do a few tests soon. Just ran back into my aerator
> pump so I
> have the testing materials at hand.
> Alan


ok, thanks, let me know the findings. the IC tube is a good idea.
Now if i only had a x/y table or a cnc to get those holes in with some
accuracy...

ST