Hi, does anyone know how to strip a mould tool back to the sealer without damaging the gloss surface finish of the sealant? The release agent is a semi-permanent type and I have tried using a mould cleaner with a non-abrasive pad and acetone but these dont do the job. I have also tried lightly rubbing with 1200 wet and dry and using an abrasive scotch brite but theses take away the sealants gloss. I would greatly appreciate someone sharing their wisdom on this particular problem please. I currently trying to obtain some liquid rubbing compound called farecla to try this but I am not very confident that this will work either.
We have found that acetone doesn’t work on 19SAM release, so we use the AXEL Xtend CX-500 mould clean which is lovely mix of Toluene, Xylene and MEK. It will shorten you life by years but it will get mould release off.
I’ve found that the easiest way to get the release off is by polishing with a medium and then a fine polishing compound. I usually use 3M perfect-it. If I’m refurbishing the mold then I usually reapply the sealer as well as the release.
I do the same as above post ^^ Sometimes we use a PMS cleaner on the mould first, usually just a reasonable compound with a bit of grit to it, however, you may find some gloss being lost. You would have to polish it through the stages to bring it back before sealing.
Thanks very much for your ideas, I have been experimenting with a compound today with mixed results. The main reason I am trying to come up with this solution is because I am trying to prolong the life span of mould tools by not having to sand down periodically for re-sealing which takes the tool out of tolerance eventually. I am also trying to change mindsets regarding the application of release agent where I work as this is commonly applied every pull but I am trying to promote a multiple release before reapplication. Eventually, I hope the tools will no longer have a release agent build-up because of this but for now, I am endeavouring to find a solution to removing the release build-up without hurting the sealant.