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PVA would of course be the tougher coating if you have any worries about it.

The nearest I come in experience is with my sand covered bases. I PVA the big ones that have a thicker coating. The smaller ones get spray varnished along with the rest of the finished model.

Sometimes a bit flakes off but as long as there is some sand underneath it does not notice.]]> http://www.dakkadakka.com/dakkaforum/posts/preList/573793/6444027.page http://www.dakkadakka.com/dakkaforum/posts/preList/573793/6444027.page GMT
I haven't tried PVA glue, does it leave a glossy or mat finish (sorry for hijack)?]]> http://www.dakkadakka.com/dakkaforum/posts/preList/573793/6444172.page http://www.dakkadakka.com/dakkaforum/posts/preList/573793/6444172.page GMT http://www.dakkadakka.com/dakkaforum/posts/preList/573793/6444173.page http://www.dakkadakka.com/dakkaforum/posts/preList/573793/6444173.page GMT