I've a fairly broad selection of brush on Hammerite smooth colours in tins at hand from when they knocked it out cheap at Halfords. Admittidly at that time I hadn't used it before and though it was the business so bought loads regardless thinking it would come in useful eventually.
My first hand experience of it was on some wishbones. I wirebrushed them and popped a couple of coats of satin black smooth on them. I soon learnt the paint is very thin and if the metal is too clean it will literally wipe off with the paintbrush. I carried on though and they came out fine - my faith in Hammerite products was restored.. Momentarily.
Next up were some rear disc protectors in good condition which I was going to rescue to save buying new ones. Again I got the wire wheel drill attachment and after a good ten minutes or so in a confined shed with no mask or goggles I had a face like a hedgehog and a post nose full of s**te that I was blowing out all evening. I considered what my lungs probably looked like, but moved on to the knot wheel on a grinder to get the job done. After using my feet as a vice and the knot wheel nearly embedded in my shin when it caught the edge of the protector, I decided the finish was good enough and selected some paint. I picked gold for this. After doing half I gave up as it was s**t.
I then picked out my Hammerite red oxide tin and slapped some of that on. It went on lovely. Faith once again restored so I went over my main beam brackets with the wire wheels and slopped some red oxide on those too. At this stage I was relieved to think that red oxide as a primer would be the way forwards. This was until I brushed some black satin over it and did the aforementioned rubbing paint over the surface. I decided a key would be a good idea, so went over them with some sand paper which did help, but not massively. I gave up at 3 coats and they are still showing signs of red underneath in places.
I have some yellow brush on Hammerite which I had my eye on for the beam tube, but again that's been lovingly rubbed down and I fear I am going to need 36 coats.
My initial thoughts are perhaps I should be spraying instead of brushing? Is the fact I have done this in the cold making matters that much worse? I brushed some Hammerite on to an old rusty part and it loved it - is this where I am going wrong? - is it that it just doesn't like clean metal?
Suggestions, recommendations and bullying welcome.
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