The Shop > Composites & Plastics

Glass fibre mould from the slender plug

<< < (8/12) > >>

PekkaNF:
Lately, it has been basically sanding, fitting, finishing etc.

I have some mystery old polyester putty, filler, etc, How fast tye go off? Any way to figure out if they are good to go, marginal, or useless. I know that polyester resin has best before date and mechanical spesification is valid only for a year,

But how that works out in mould or something less demanding. Doesn't the hardere expire faster?

Pekka

vtsteam:
Just try a test sample, Pekka. I think if it hardens properly, and sands okay it's good enough to use.

PekkaNF:
Testing

PekkaNF:
6 coats of release wax and half of it coated with PVA. Then I applied top coat (all black), but it would not gel in one hour and temperature was 23C. Odd...then I check the amount of hardener. Crap, i was suposed to use 1,8% but I used 1%. Excess of the gelcoat hardened on the can, but not on the sample piece. Double crap. Put it in the garage overnight and hope gelcoat is sticky on the morning.

Noob mistake.

vtsteam:
Maybe try exposing it to sunlight, Pekka? Don't overheat it, but try a short period? Besides the warmth, the UV might catalyze the cure somewhat.

Wait -- is this gelcoat supposed to remain tacky for good bonding to the glass above?

Or is this a topcoat type gelcoat that goes over everything, and you already have done your laminations under it?

Navigation

[0] Message Index

[#] Next page

[*] Previous page