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Old 01-27-2014, 06:16 PM   #5
psneeld
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City: Ft Pierce
Vessel Name: Sold
Vessel Model: Was an Albin/PSN 40
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Quote:
Originally Posted by Parmenter View Post
Are they the same ones who try to sell you their expensive microballoons instead?
Microballoons are actually hollow phenolic resin spheres.

It makes no sense at all when you consider that (at least I always have) rolled in pure epoxy (to about 200mm above DWL) over finished product and then while tacky it gets several layers of waterproof epoxy highbuild/primer sprayed on it before the addition of any final antifoul or topcoats.
Just relaying what some "experts" in the field think...

Don Casey for Boat US writes...
"6. Now thicken some epoxy to a peanut-butter consistency with colloidal silica and fill the cavities with this filler, using a squeegee to compress and fair it. Silica-thickened epoxy is difficult to sand, so fair the repairs well. Never use microballons or any other hollow or absorbent (talc, for example) fairing compound to fill blisters."

So there are some pretty influential people in the field that think the amount of possible absorption degrades the possible repair or fairing underwater...again...I don't know the chemical reason behind it but there's other fairing compounds available...
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