Releasing fibreglass from the mould, any tips?

[dtype38]

Originally Posted by trikesrule

..... If you use PVA and pour it on and get a uniform sag across the surface (messy) this will set up quite hard if you leave it for three days and you will get quite a good surface that won't require much preparation for paint. I've just finish 'flopping' copies of some Speedway Seats that I made two Winters back (don't have a mould yet). The driver (lady) of that team dosen't fit the seat any more (darn she's added more flabby ballast). All I did was pour the PVA over 2/3 of the seat waited three days and the finish texture is 450 woven cloth - bit like uniform dimples. .......... For a bit of colour I put Hot Pink Pigment @ 4% in.

Oh dear, I now have a picture in my head of hot pink dimpled flabby ballast, dressed in a pva uniform, and sagging evenly across a messy speedway seat.

Fibreglassing is obviously only for the brave in Aus!

But thanks for the help guys.

[trikesrule]

Yeh it's a heck of a picture lol..........trikes

[phansa88]

when i made race yachts and boat sand the plug through the sanding grades
600 -1200 then polish with electric polisher and compound rough medium and fine. t-cut then wash wipe dry , 3 layers of wax leave 12hrs between each one ,then pva.
then gel and glass up leave to cure say two days then release
p.s i always put a air connector into the mould when laid up so i could pop the mould of the plug .also helps when doing the moldings just a piece of tape over the hole every time.