Homebrew PCBs

> >AndrewM wrote:
> >Not saying you should. I am saying my
> >bubble etcher is bad and I need to get a
> >new etcher. You obviously have a better
> >bubble etcher than I do.

> derekhawkins wrote:
> 
> Check out messages 14958 and 14969. I've
> always favored the smallest BE (ET-10)
> mainly because 6"X4" is my standard board
> size and you need half as much etchant to
> handle that in an ET-10 than the larger
> BEs. But as message 14969 indicates, all
> ET-20s are not the same so it's quite
> possible that all ET-10s are not the same
> either. Whatever, I've never had any of
> the issues usually attributed to BEs.

Had a look at the supplier.  Mine is an 
ET-20

http://www.computronics.com.au/kinsten/tools/

I actually have 2 of them and I checked them
both out last night.  Both have the big
swirl happening.

After you posted you pictures of your 6/6
afterwork last night and I compared them
to the test print I did of Adams pattern
I would say with pretty high certainty my
problem is the etching.  The printout from
the laser here looks sharper than the ink
jet printouts.  And as I have said before
this laser has very high density and no
pinholes.