Okay, so this isn't painting, but I figured someone would know something about this. What kind of material us the Tamiya extra thin brush made of? I tried to use some cheap synthetic paint brushes with it, but they hardened and broke apart. Anyone have any luck finding a decent brush to use when applying extra thin for assembly?
Best thing to do is probably just to buy another pot and transfer the glue over as you run out. You can theoretically use most non nylon brushes but it tends to dissolve the glue that keeps the bristles in place, so maybe rinse right away? I've used blunt syringe tips before with some success just using capillary action.