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MG Midget and Sprite Technical - How to prepare a newly welded joint

Have just finished a bout of welding on the underside of my midget..
Question I have never managed to answer satisfactoryly is what to do next?

1) brushable seamsealer then stone chip paint
2) paint(smoothrite), brushable seam sealer, then stone chip..


1 or 2 with underseal in the place of stone chip

should I use etch primer?
should I treat with tanin or phosphoric acid?
Should I use a zinc based primer?

Whatever you suggest, I want to do my best to stop rust reappering..

Tim
T Dafforn

Tim

I like to use BondaPrimer before applying seam sealer and then my chosen finish.

Carl
C Bintcliffe

Clean all crudd off using a wire brush in a drill, then clean surface using panel wipe or celly thinners to remove any oil/grease contamination. next coat with etch primer if you have it, or as previously mentioned, Bondaprimer (zinc primer) is excellent stuff if you can find it. It's a celly based red zinc primer, that can be brushed or sprayed. The brush applied paint covers very well, and goes a long way. The spray cans are expensive and don't cover much. It's available mail order from Bondaglass Voss

http://www.ribaproductselector.com/company/984/overview/Bondaglass-Voss-Ltd.aspx
Cheers John
JOHN HALL & JULIE ROBERTS

I can recommend etch primer. I have painted a shell in it which has sat for 6-8 months or more, and no rust has appeared. Followed by seam sealer, then 2 pack primer would I think seal it very well.
Tarquin

This thread was discussed between 18/11/2009 and 20/11/2009

MG Midget and Sprite Technical index

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