Homebrew PCBs

Hi List,

While I was ironing attempt #2 onto copper clad today, the outline of a human hair became clearly visible under the paper (the aluminium from the iron basically acted like a rubbing pencil). I guess the good news is that it was clearly apparent early on and I was not left to ponder over what it could be that caused the non-adhesion. But there certainly wasn't anything I could actually do about it.

After a fruitless attempt to pull it out, I decided to just wash the paper off and see what the result was, whether I could patch a few traces. It was pretty significant! I've uploaded a photo at:

http://groups.yahoo.com/group/Homebrew_PCBs/photos/album/809517956/pic/2133723863/view?picmode=&mode=tn&order=ordinal&start=1&count=20&dir=asc

Anyway, *another* thing to check carefully for before proceeding.

PG

It is even more of a challenge when you have cats. I keep a can of compressed air and blow everything down before putting on the resist.

--- In Homebrew_PCBs@yahoogroups.com, Piers Goodhew <piers@...> wrote:

>
> Hi List,
> 
> While I was ironing attempt #2 onto copper clad today, the outline of a human hair became clearly visible under the paper (the aluminium from the iron basically acted like a rubbing pencil). I guess the good news is that it was clearly apparent early on and I was not left to ponder over what it could be that caused the non-adhesion. But there certainly wasn't anything I could actually do about it.
> 
> After a fruitless attempt to pull it out, I decided to just wash the paper off and see what the result was, whether I could patch a few traces. It was pretty significant! I've uploaded a photo at:
> 
> http://groups.yahoo.com/group/Homebrew_PCBs/photos/album/809517956/pic/2133723863/view?picmode=&mode=tn&order=ordinal&start=1&count=20&dir=asc
> 
> Anyway, *another* thing to check carefully for before proceeding.
> 
> PG
>