I was out talking with a company today and the topic came up about resin build up around split tooling lines and aiming to remove the operation that would have to take place to buff resin off. See the pic attached – when joining a split tool, the little depression at the joint is obviously great for attracting a little resin ridge on the finished part.
I would always suggest a better tool – tools are currently made out of fibreglass and could be made out of machined aluminium to reduce this effect, but are there any novel products on the market that can seal such a ridge on the tool to avoid this resin buildup at all? Something like a thicker spray that wouldn’t compromise surface finish?
Thanks.
depending on how much flashing you have, maybe a silicone strip. If it’s real tiny, maybe just a thick wax/clay. I think wax would give a better shine than wax, however either way, it don’t be a flash line that needs to be sanded. Maybe just a slight finish difference.
unless the tool is razor sharp, you will always end up with minor buffing.
Larger seams can be filled with plasticine, or yellow wax filler (pelikan nakiplast) which is what we carry for that purpose.
a very high slip release applied after every pull to these trouble spots work very well.
Clamp molds together, fill problem area with clay, apply in mold coating if applicable, bag/infuse, demold, buff to shine.
Or
Have the molds cut on a CNC for a razor edge like Herman said.
Freeman wax fillets or clay.
Ah thanks. Ive used wax previously, but it was a general plasticine wax and it did dull the finish. I do think there is some pelikan style wax around the workshop so I must give that a go.