RMweb Gold russ p Posted April 24, 2018 RMweb Gold Share Posted April 24, 2018 Somewhere I have some old linka moulds I remember it taking forever to cast enough sections to construct a building I was wondering has anyone tried car body filler in the moulds or would it stick to them and ruin them? Link to post Share on other sites More sharing options...
PatB Posted April 25, 2018 Share Posted April 25, 2018 It should be OK if you use an appropriate release agent. You can buy the proper stuff from fibreglass supply specialists but a cheaper alternative is an aerosol silicone lubricant. I've used this option between wood and plaster and between epoxy resin and plaster and it's worked well for me. Silicone car polish would probably also work. Link to post Share on other sites More sharing options...
RMweb Premium polybear Posted April 25, 2018 RMweb Premium Share Posted April 25, 2018 Using car body filler won't speed up the process - it'll just be a pain to mix and may well not catch all the surface detail. There's plenty of more suitable casting materials to use Link to post Share on other sites More sharing options...
PatB Posted April 25, 2018 Share Posted April 25, 2018 You can get some quite runny fillers which should sort the detail problem, and a polyester based filler (most of them) will set to a level of strength adequate for mould removal faster than plaster. Or should do anyway. I'm not sure how significant the difference would be though. Link to post Share on other sites More sharing options...
RMweb Gold russ p Posted April 25, 2018 Author RMweb Gold Share Posted April 25, 2018 I'm doing scenery with ready mixed plaster, would this be OK in linka moulds? Seem to remember plaster of Paris being quite fragile Link to post Share on other sites More sharing options...
PatB Posted April 25, 2018 Share Posted April 25, 2018 I'm doing scenery with ready mixed plaster, would this be OK in linka moulds? Seem to remember plaster of Paris being quite fragile Would have thought so. However the plaster based fillers I've come across have been a bit stiff to reliably fill detail. Depending on the consistency of your ready mixed stuff you might need to wet it down a bit. Link to post Share on other sites More sharing options...
RMweb Gold russ p Posted May 3, 2018 Author RMweb Gold Share Posted May 3, 2018 Having now got some moulds I'm going to try and find a fast curing product to use Ready mixed would be best ad I can do mould after mould I want a terrace of houses about six to eight feet long in three or four sections so I think linka is most cost effective way to do this 1 Link to post Share on other sites More sharing options...
MikeTrice Posted May 3, 2018 Share Posted May 3, 2018 From memory you can add PVA to plaster of paris to make it less brittle. Link to post Share on other sites More sharing options...
RMweb Gold russ p Posted May 3, 2018 Author RMweb Gold Share Posted May 3, 2018 I may try some body or wood filler in a less useful mould to see what happens It would be a boring day but I have two moulds which have the parts for a row of cottages but I think with a big tin of filler it could be done in a day but I'll see if it works first Link to post Share on other sites More sharing options...
RMweb Gold russ p Posted May 7, 2018 Author RMweb Gold Share Posted May 7, 2018 Had a go with some ronseal two part wood filler and no nonsense filler from screwfix today The wood filler which is very similar to car body filler went off very fast and took all the details, I put a smear of talk over the mould first. The screwfix one is still curing! I think the best way is to try and get a couple more A4 moulds as this is the one I need most of and buy a big tin of body filler. The downside is its messy to mix and some will get wasted. The upside is its quite a bit stronger than plaster of Paris and seems to join together better with the joins not as noticeable. I think when I come to build the houses a thick PVA glue will probably be best to disguise the joins and then a coat of white primer Link to post Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now