Homebrew PCBs

In article
<w2jafa365fa1004251146hd0fd69e6wa6fcef85db1fb5d9@...>,
   Stefan Trethan <stefan_trethan@...> wrote:
> Are there any alternatives to welded plastic if one wants a narrow
> shape and dimensions that can't be found in any existing tank?
> Anyone tried two component epoxy? On glass? Some other glue?

I've been wondering about suitable materials myself.

I have a very old tank (commercial) which is "past its use by date". A few
years ago I made the mistake of turning it on without any liquid in it and
part of it melted (It's PVC I think). This was repaired with fibreglass.

The last time I tried to use it, about a year ago, it didn't seem to be
bubbling very well and while prodding, the bubbler tube along the bottom
pretty much disintegrated.

I thought about Perspex (Acrylic) but it seemed expensive and I discovered
acids have a detrimental effect on it. I ruled out glass, which I would
have sealed with silicone sealer (!) because making holes for the heater
and bubbler tube were beyond me.

A couple of weeks ago, I was talking to an acquaintance of mine when he
mentioned that his son does things with glass-fibre for a hobby and this
seems a possibility but during my researches I also discovered this site:

http://www.plastidip.co.uk

They do a paint about which they claim:

"Plastidip resists alkalines, acids, salts, moisture, abrasion, and most
chemicals, and is an insulating dielectric coating. It will not crack,
chip or peel, and will remain flexible even under severe conditions
(-34ºc to +93ºc).

To me, this opens up the possibility of a tank made out of plywood; a
material which is easy to obtain, relatively inexpensive and which I am
very familiar with.

I also discovered:

http://www.clickonplastics.co.uk

Who sell PTFE tube at realistic prices and I consider this might be good
for a bubbler.

I don't have any connection with either of the above companies and at the
moment I don't have time to pursue this any further but I'd like to know
what others think.

-- 
Stuart
http://www.torrens.org.uk/ZFC/gallery/winsor.html