Hi everyone.   I appreciate there are many old blogs on this topic; I've perused several and want to pull together key points combined with my own experiences and practices. BTW my professional life was spent as a chemist.   Which glue? I've tried many sources from the 6 for $2 from our local Dollar shop right up to the big name brands. IMO there is very little difference in the underlying chemical involved as far as adhesion is concerned. The cheapest superglue will meet your average model