Tonight - in the middle of the night - (why, oh why, especially before a big day, am I up in the middle of the night!) I am applying POR-15, a several-stage process, which starts with Marine Clean (degreasing), drying, Metal Ready (keeping wet for 30 mins) rinse with water, allow to dry, as dry as a bone.
Metal ready is a rust remover that leaves a zinc phosphate coating on base metal, the perfect pre-primer for POR-15.
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POR-Patch is a "pudding" version of the same substance and is used as a filler. I shall work a radius of it right along the front of the cab.
When it has had time to dry (2-6 hrs) to the touch, with slight finger drag, I'll give it its second coat and then leave it overnight....and for the next 24 hrs, after which I shall apply the pudding.....which is the bit I have put lots of faith in. It is meant to be the ultimate filler: hardens like steel but flexible, so won't chip or crack, will be waterproof and non-porous, will be moisture barrier, will be impervious to all fuels.
It says in the blurb that in lab tests it was applied to a metal box used as a raw sewage filter and put into action within hours of being treeated. The welds were checked after 6 months and no visible rusting had occurred. Mind you, they don't say what had occurred on the non-weld areas of the box, LOL.
If it is as strong as they say, as I hope, it will strengthen the compromised front at the bottom of the sub-windscreen channel, though I have filleted it with welds inside the channel anway.
The big day tomorrow, by the way, is the collection from Truman's store in London, of a Gold Seal B series engine with my mate with his trailer. That said, I talked to my B series mechanic today and he told me that he'd found a cylinder head and fitted it for me, so the engine will be a fall-back position.
4 a.m. before eyes closed!