CBRRRT

Casting a seat from a fiberglass mould

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Now I have my mould I need to prep it ready for fiberglassing. I started with 240 wet and dry then went to
400, 600, and finished up with 1200 then T cut to get it as shiney inside as I could
Now ten coats of wax.



Well, the mold has had ten coats of wax, and its ready for P.V.A.



Because the surface has been waxed the pva will want to seperate.



Mix the pva 1 to 1 with water so its not to runny, but thick enough to paint on and as it starts to dry it will brush on the surface without seperating. Its a bit of a process but if you keep brushing it will cover



Untill eventually it will completely cover and go clear



Yep, preperation is the key to fiberglassing. You want everything to hand and a big must is a box of latex gloves as they get very sticky and you need to change them regularly.



I added a section of 12mm WBP plywood to strengthen the seat and attach fixings too.



I'll trim the edges when its gone off a bit



The glass has gone off enough to trim off the excess with a craft knife.



Now it can sit a cook for a while.

Next I popped the seat out of the mold, it wasnt perfect and had a few air bubbles in it, but I was expecting that as its a first attempt at a seat unit.
Anyway thats what filler is for. I gave it a good going over then sanded it all back.



I gave it a shot of primer and it didnt look to bad, although there are still a few tiny bubbles to get out, but over all I'm happy with the results.



I mocked it up with the tank and it looks ok





I'm happy with the end result and consider it a win.



So there you go. Why not have a go your self and do something one off for your ride. I made a seat for my cafe racer project but it could have been quite easy been a bobber or fighted seat.

Remember where you saw it first,

The one, the only Aussie Streetfighters.
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