I spent several hours looking for an inexpensive source of schedule 80
1/4" PVC pipe and fittings to make the air "sparger" outlined on the
"Think and Tinker" website.
I was pleasantly surprised with my experience with this website:
http://www.usplastic.comThey sold me 10 feet of 1/4" schedule 80 pipe, two end caps, two 90
degree elbows and one tee, for $11.97. There was no shipping fee. This
is much cheaper than several other sources I found on the 'net.
I thought this might be on interest to list members wanting to use
cupric chloride etchant. (Other than being a happy customer I have no
connection with US Plastics.)
Grant