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Old 12-14-2011, 11:59 AM   #11
2talljohn

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Also make sure you clean the spray tip with solvent. I hardly do and I'm usually upset when it spits lol.
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Old 12-14-2011, 07:06 PM   #12
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Also make sure you clean the spray tip with solvent. I hardly do and I'm usually upset when it spits lol.
Don't scrape it off while pointing at your face. And don't laugh at the guy who does as the next day you will do it.
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Old 01-25-2012, 07:25 PM   #13
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Is Super 77 spray adhesive compatible with epoxy resins?
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Old 01-26-2012, 04:56 PM   #14
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Is Super 77 spray adhesive compatible with epoxy resins?
I don't think it is compatible with any resin if you get technical but it works fine when used in moderation. Just keep a good distance between the can and fabric for a nice light coat. I used it to kit up all the materials for the infusions I did in the MTI hose thread and you can see it creates no problems. Plus DDCompound used it on the surface in his video and it didn't have a effect there either. There are better spray adhesives like Airtac2 and Econotac2 from Airtech. You can make an account and get it from Airtech like most do or if you like to just make a simple online purchase Noahs Marine has some.
https://www.airtechonline.com/
http://www.noahsboatbuilding.com/ite...atus=0&Tp=&Bc=
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Old 01-26-2012, 10:30 PM   #15
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When I spray it I don't spray directly onto the fabric or the mold. I spray over the fabric or the mold and let it settle onto the fabric. You'll get much more even coats.

Basicaly don't spray the fabric, let it rain over the fabric, (and that rain better be in a mist form).
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Old 01-27-2012, 12:05 AM   #16
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Anyone uses StayZ from Zyvak? Is it worth the extra price?
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Old 01-28-2012, 07:53 AM   #17
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I have seen hairspray used in the past. Keep meaning to try it myself but have not done so yet.
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Old 01-30-2012, 08:34 PM   #18
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I would not. I've seen hair spray used as a PVA meaning it creates a film that is not disolved by resin. Correct me if I'm wrong. The thickness might also have something to do with how its disolved. But I wouldnt try it hah.
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Old 01-31-2012, 05:25 AM   #19
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I tried using 3M Super77 just the other day. I applied a very light mist to the mold surface (a waxed mirror). The fabric adhered nicely. But after the infusion was complete, the mold surface of the part was very sticky, and still had the residue on it. The mirror surface also had the residue on it. There were tiny dry spots from where the 3M was in contact. I was using Adtech 820 epoxy resin, which may have something to do with it. I will not use it again, at least not with this resin system.
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Old 01-31-2012, 07:00 AM   #20
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Try another spray glue. I have seen many problems with 3M77 and Super77.

I would avoid spray glue on the mould surface anyhow. Why not using a gelcoat (epoxy or polyester based) and stick the fiber to that?
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