This simple recipe 50 PVC glue/50 solvent dries really quickly, so you have to prepare this mixture just before to brush it. The main idea is to create a varnish solvent based, like that of SpikeIt, so you can apply it also with an airbrush pen and you do not need anymore any kind of top coat. In some posts here on TU there are some suggestions about more efficient recipes, but I couldn't find the right one till now.
Bye
Cami