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Hess Mobil glue joint10/20/15
I have an edge press that gives inconsistent glue lines.
How have others tweaked this machine to get it to perform as it should?
Are the gaps in the middle or the ends or random.
Seems like if it's always the back edge the platen may have a bit of a twist. Try having someone cycle the machine as normally used but w/o glue. watch how the joint closes. See if it will close properly when you put some thin shims where it is open. (deck of cards) You should be able to determine the location of the pressure fail by repeated shimming and clamping. If it is the platen & not just a weak clamp you are down to two choices. Tape some shims on it or take it to a machine shop & have it milled. Seems unlikely that it would be the heat bar.
Out of curiosity, are you applying glue to the substrate or the edge? If you are gluing the edge, is it possible that the glue is curing in a thick glob in areas and not allowing the joint to close? Just a guess as I have no experience with an edge gluer.
hardwood strip is placed on platent and plywood edge is glued with a roller