I just bought a nice H&G 4 cavity #503. I cleaned it thoroughly and it really came back nicely. Someone had covered it with some kind of gunk (I THINK it was mould release) and the underlying blocks were quite nice. The cavities are perfect. I can't wait to cast with it.
When I close the mould and hold it up to the light, it looks like the blocks are not closing quite all the way. So the answer is more than likely in the alignment pins.....which brings me to my question.
I have never had to move the alignment pins in any of my H&G moulds. How do you so that? I know it is a stupid question but I don't want to tap them and move them too far, or damage them in any way.
Use a hammer? A brass hammer? Tap them or do they need explosives to move? What is the best way to do this?
Better to ask a stupid question and be thought a moron than damage my mould and prove you right!