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Glass Fibre Techniques

Posted: Mon Oct 23, 2006 10:30 pm
by whiterabbit
Hi

A couple of general questions on technique. Where you have a cut edge, like the bonnet scoop on Alec's car and others, its only 2mm thick or so. Is there a easier way to thicken it up and add a neat sva-friendly 3mm radius than bonding on pieces of scrap then fill and sand.

When doing body mods on tin cars in the past Ive used a thin coat of aerosol grey primer as a guide coat to check for low patches or scratches. Is there any reason why this might cause problems with the final painting on a GRP car ? Accessory shops now stock two types of grey primer, one for metal and one for plastic, but surely if, say, youve put wide grp arches on an Escort youve got both materials on the same job. :? Life was so much easier in the good old days....

Steve.

Re: Glass Fibre Techniques

Posted: Tue Oct 24, 2006 10:53 am
by stylussprinter
whiterabbit wrote:Hi

A couple of general questions on technique. Where you have a cut edge, like the bonnet scoop on Alec's car and others, its only 2mm thick or so. Is there a easier way to thicken it up and add a neat sva-friendly 3mm radius than bonding on pieces of scrap then fill and sand.

When doing body mods on tin cars in the past Ive used a thin coat of aerosol grey primer as a guide coat to check for low patches or scratches. Is there any reason why this might cause problems with the final painting on a GRP car ? Accessory shops now stock two types of grey primer, one for metal and one for plastic, but surely if, say, youve put wide grp arches on an Escort youve got both materials on the same job. :? Life was so much easier in the good old days....

Steve.
Thin bit of tube fixed with P38 would do the job . Something bendable like new brake piping then filled carefully over :?: :?:

Just a thought , as I don't have a scoop :lol: Rob.

Posted: Fri Oct 27, 2006 2:47 pm
by alecmartin19
i used a very thin tube and then built up layers of cloth and resin around that then used a boby filler just to smooth it off when i prepped it for painting.

as for a guide coat, an aerosol primer does the job fine as you will be sanding it off during the prep anyway. obviously don't forget to use panel wipe to degrease the surface before you paint. don't use celly thinners as a panel wipe as this can make the surface a bit tacky!

hope that helps!