Well I couldn’t resist the temptation to pull the mold, I figured most of the parts had been done a long time ago with only the last piece being a couple of days old.
The sides and back popped off relatively easily, and surprisingly so did the top which surprised me. It turns out the area where the PVA pulled away wasn’t nearly as bad as I feared. I guess I filled enough gel coat and resin in to fill most of the void. It will still need some filling though.
The front sections however fought me every step of the way to get the mold off. The dash buck didn’t survive that well and bits that were basically fibreglass filler and bondo split in the process. One lesson I learnt was to make sure you cut back the mold right to the part, or even further shortening the part as these are the areas which clung on for dear life!
I have a few areas where air bubbles that were behind the gel coat caused the gel coat to break leaving voids, not too many though all though some bits are hard to get to in the narrow recesses.
So I have a question, how best to fill these areas and what to fill them with? Gel coat and sand it back? For some of them I was thinking of just using candle wax as this is probably a one time mold? Thoughts or ideas anyone?
Overall I pretty happy with the mold and the learning process, its far from perfect but could also have been a lot worse.
Gel coat air bubbles. Not my favourite things.
One has just appeared on my drivers side sill on the edge of the air intake.
It looks like a sink hole to me 😡
Candle wax should be fine for a one-use mould - it'll save doing more damage to the surrounding mould surface by sanding back filler... It works well for limiting flash lines in your joints too. Good luck with the next step!
I hate GRP and I wish there was an easy, none messy alternative as I have some great ideas but I am put off by the thought of all that GRP, bucks, moulds, etc. yuk!
The opinions expressed in my posts may not be made in a sound mind and should be taken in the spirit intended, Jack Daniels is fine.
Some people see things as they are and ask why? I dream things that never were and ask, why not?” JFK
I think I would go down that route gel coat doesn't cure too well when exposed to the air it can remain tacky for a long time and as Alex says you would potential have problems around the area with sanding, I would use laminating resin and put down a couple of layers of tissue over the gel coat first when you come to make the part.