For the first time in years I happened to be reading the blurb on the back of my almost-used plastic bottle of Evostick wood glue and was amazed to discover that it says apply the glue to ONE surface whereas I have been applying it to both surfaces for yonks! I bought a new bottle of glue at Wilkinson (I'm trying their own brand of PVA at half the price of Evostick) and its instructions say the same: Apply to one surface.
So what is wrong about brushing a thin layer onto BOTH surfaces? I am intrigued!
MM