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RE: drying coil forms
Hey all..after reading the 'drying thread' I'm more confused than ever.
Dr Resonance puts down acrylic, others don't. Some think PVC requires a
specific drying procedure and sealing, others don't.
Ask three people and you get 6 answers or so it seems.
I have a headache.
I will proceed with my plexi tube. I guess at this point I'll have to learn
based on my experience and then I can add my yea or nay to the group.
Ted
Subject: RE: drying coil forms
Original Poster: "ROBERT CRESSLER" <59CREROB-at-MENASHA-dot-com>
ted,justin,all,
snip
I am using thinwall (1/8") Plexiglas for my secondary. yes, it costs
much more, but it is not hydroscopic and does not require and extensive
drying and sealing procedure.
snip
acrylics (cast,extruded) are indeed hygroscopic , for comparison
rigid PVC has a water
absorption of .04-.4% and acrylics with .2-.3% (wt. gain after 24hours
per ASTM D570)
This has come up before and I am still unclear as what dictates (or why) a
superior coil form.To really confuse me the dissipation factor at 1Khz
for acrylics is .02-.03 and PVC is.009-.017 !!??
Robert