In Reply to: I use a piece of a Pool Noodle childs....more posted by Fredr on February 12, 2000 at 09:24:30:
Its about 3" in diameter and works well.
I think that may be too big in diameter. I've seen pool noodles ~4-5" in diameter...Definitely, way too big!
The foam type of pipe insulation for 1" copper pipes seems to be the proper size, 2 1/8" O.D.