Re: Leak at traveler - minifish
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Ventilation is important when using polyester resin.? I once had a job as a patternmaker?for a company that made aerodynamic fairings for trucks.? The building I worked in was very large but my work area was near the spray booth where they used the chop gun with the resin/glass mixture.? The doors to the building were usually open but one particular day it was quite cold outside and the doors were closed and the smell of the resin was quite heavy.? At one point I needed to take a measurement with my tape.? I could see the numbers and all the hash marks and my vision was perfectly clear.? But my brain could not tell me what all of that meant and I had no idea what the measurement was.? I turned and walked out to get a few breaths of fresh air, then came back in, picked up my tools, and left for the day.? As far as I know, there was no lasting damage.? I didn't stay in the job much longer.
James
On Mon, Jul 6, 2020 at 7:24 PM crispin_m_miller < crispinmm@...> wrote: Thanks.? At the place I bought it (in 1984) that was the only kind on the shelf.? Later saw catalog listings for polyester resin “with wax” and “no wax.”? Just didn’t want Joel to get surprised.
cm
> On Jul 6, 2020, at 5:14 PM, gdinwiddie <sunfish@...> wrote:
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>> On 7/6/20 5:50 PM, crispin_m_miller wrote:
>> At least in the days when I last used polyester (35 years ago) some polyester resin would come with a little bit of wax mixed in, which would float to the surface and seal it well enough that the catalyst would stay in and the surface would cure.? BUT then if you had another layer of glass to apply, you’d have to get that wax off or you’d get no adhesion at all.
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> Yes, they call that "finishing resin." I've never used it. It made more sense to me to get some PVA (which is also used as a mold release) than to get two kinds of resin for the small amount of glasswork I do.
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> - George
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