Alan Clark wrote:The epoxy glue that I am familiar with here in the UK is Araldite, slow setting. As an archer who makes his own wooden arrows I use it to glue on the metal points. It is reversible, with heat. If I break an arrow and want to re-use the point, I hold the point in a candle flame. After a few seconds the glue goes soft and the point can be pulled off with pliers.
Obviously you can't do this with a guitar bridge! But maybe you could use a cobbler's knife with a flexible blade, insert it under the bridge, and heat up the blade. How did you apply heat Chris?
Maybe the bridge repair was done with epoxy, and it softened a bit when heat was applied. Or maybe it was repaired with Gorilla Glue or some other brand of expanding PU foam adhesive. I also use this to glue on arrow points, and it breaks down when heated up.
Interesting that Romanillios used powdered resin glue for gluing bridges. When I was a professional lute maker I used it (Cascamite) to glue a lot of bridges on, and never had any problems with it. But that was a long time ago. They changed it, I believe, and it is now called Polymite. Not sure if it 's as good as it used to be.
That's exactly what I did... I have a heat blanket with thermocouples which I use for repairs. At first I heated the tie block area and let the heat sink in. When that didn't do anything I worked the spatula in a applied heat to it, to no avail.
I knew at the very least I was going to have to pull the back to replace a mangled centre brace and quite a few large cracks/seam separation etc. The bridge had to come off to do a good job fixing the separation given that it wouldn't close back up, IMO. All this has made me decide to re top it.