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Interesting work you're doing there. Do the panels unbolt from the donor, so that once the buck is made (and mould lifted from that) the GRP will just bolt on, replacing the originals? Bonding on to existing panels is IMHO to be avoided if possible.
Interesting work you're doing there. Do the panels unbolt from the donor, so that once the buck is made (and mould lifted from that) the GRP will just bolt on, replacing the originals? Bonding on to existing panels is IMHO to be avoided if possible.
It will be a little of both.
The whole front will be able to bolt on to existing bolt holes.
The rear will have a metal frame created that will bolt onto exiting bolt holes in the rear, the rear body will then bolt to this framework and be bonded in small areas where any other attachment would be difficult.
Your method of using framework and woven roving appears good, and it's great to see 'out of the box' thinking. Did you consider using foam panels to get to the shape? the foam spray is very expensive (I know from experience :icon_sad, and the foam sheet is so light it can self-support. Foam panels (sold as builder's insulation) isn't too expensive, and can be glued on with your foam after the paper and/or foil sheet is removed (that process is very smelly for some reason!)
Your method of using framework and woven roving appears good, and it's great to see 'out of the box' thinking. Did you consider using foam panels to get to the shape? the foam spray is very expensive (I know from experience :icon_sad, and the foam sheet is so light it can self-support. Foam panels (sold as builder's insulation) isn't too expensive, and can be glued on with your foam after the paper and/or foil sheet is removed (that process is very smelly for some reason!)
I did but I like the easy of foam, both the application and shaping is great and takes very little time, also if you make a mistake you can fix it quickly.
Cost wise I've used £70 in foam so far, I buy in bulk on ebay. I think it will be around £100 total for the whole car which isn't too much at all.
I did but I like the easy of foam, both the application and shaping is great and takes very little time, also if you make a mistake you can fix it quickly.
Cost wise I've used £70 in foam so far, I buy in bulk on ebay. I think it will be around £100 total for the whole car which isn't too much at all.
Fair comment. How are you planning on getting a smooth finish to mould off?