Clamps in use, with caul under the top. Clean away all glue squeeze out with a warm damp cloth and clean the string holes with a guitar string. Another way to keep the glue out of the string holes is to force a little paste wax in them DO NOT get wax on the bottom or glue surface of the bridge, glue does not stick to waxed or oily surfaces. Many of the old guitar makers scratched or roughed up the surface to be glued a hack saw blade works well.