I'm doing some brush painting of engine castings, using brushing enamel paint, having already filled, primed and flattened down the surface of the castings to a decent smooth finish for receiving the colour coats. I have done the same process before, on my Stuart steam hammer, and on the Quorn grinder castings, and obtained a reasonable finish by brushing final coats . ( I'm not proposing to spray paint, so hence my specific query below ).
The smoothing of the castings has been done pretty much as Prof. Chaddock has described in his Quorn write-up, time at the sink with flour grade wet and dry used wet, a bit tedious but gets there after various episodes of building up and flatting down a number of applications.
The colour coats are going on fairly smoothly, but I could do with flatting them just a little between coats, until I have enough depth to try leaving a final, unmolested, top coat. I'm using a claret red, which has a certain transparency to it, and will need more than a couple of coats to look solid.
I could,/ may, go back to the sink with very fine, rather worn-out W+D paper and the same slow business on the colour as I did on the primer coats. But, I was wondering if T-Cut polish/ restorer used on a soft rag, and the job rinsed afterwards, would achieve the gentle flatting more easily than the awkward scraps of W + D paper, a bit difficult to get into corners... I happen to have some Perspex polish here -( would need to buy a can of T-Cut ) - is that any use to me for the same mild flattening purpose, or is it best not tried.
Would welcome comments on this, thanks, Dave