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#24
04-04-06, 05:27
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Hanno mentioned commercial rust removal baths. Just be very careful!
They do a quick job with none of the sandblasting damage. I gave one of these firms a Bantam trailer which was dipped complete into the huge vats. It came out shiny clean. They then washed it three times in other vats to remove all the corrosive residue. I had to repaint the trailer 3 times over the next couple of months as corrosive residue kept leaching out of every seam. I spent hours with a water blaster hitting all the seams and any area where there was double plating (like around the top tubes and floor seams). The bloody stuff just kept coming. That was 5 years ago and I looked at it the other day and there is still the odd place where the paint has been stripped from the inside out. I would suggest only single sided work be derusted in baths! PS: Molasses works great although it will attack cast iron if left for weeks making it look sort of porous. Molasses is just pure sugar. It is the first stage of refinement - molasses, treacle, golden syrup, brown sugar, white sugar. Cows love it and farm supplies carry it but beware they often put salt in the stuff for cows. Lang 
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