phil.p":15sxp2dd said:
Anyone tried using diluted good quality p.v.a.? - I haven't, but it's only just occurred to me.
I'm guessing you maybe mean edges of MDF as the face sides finish pretty good with primer? Choking with primer is Ok but i'm not happy with the extra work and material it can take. i do my'n with pva diluted 2 pva to 1 part water and it's pretty quick if your well organised. I deal with this every week finishing joiners and fitters work and have tried a few methods.
I find the best way is to cut up a small bit of sponge, (about the size of a block of butter), soak it in your pva/water bath and gently drag down your edges - wiping any runs with a rag, leave to dry for a few hours, gently paper and repeat once more. 2 goes of this means that when you hit it with a primer there are virtually no dry edges and the piece can move along at the same rate as a whole, at most you should only need an extra pass or 2 with the primer down the edges for good measure. I've yet to better this way of doing it and the results are good - and of course it's very cheap.
Sean