Jerry,
In our house we generally run a glue bottom last but people do it both ways. Our logic revolves around protecting components from being knocked off the board during handling and processing prior to wave solder (this is most important with small passives 0603s). Be sure that the adhesive you are using can withstand a cure and reflow excursion without becoming brittle. I have seen this happen. Parts can either be bumped off during handling, from friction while riding on the washer flat belt or during wave. Handling, especially if you have 0603 passives on the bottom, can be a little scary if your operators don't use the safest practices.
Call your adhesive supplier and see what they have to say. If they tell you, "Works fine, last a long time", do some kind of evaluation. If they say they are not sure, do an evaluation. If they say "don't do it", find another material or supplier.
The ideal test method would be a shear force test. You may be able to get the adhesive supplier to do this for you for nothing.
Good Luck.
Joe.
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