I'm getting to the point in my Granado build that I'll need clamps to glue the wales and the mortar pit clamps to the frames. The problem is that the clamps and wales sit about 3" below the top of the frames. I don't have clamps with a throat that deep. Even big C-clamps won't work. I stumbled across these clamps by the Bessey Co. They're not cheap - about $5.85 US per clamp but they have a 4" deep throat and 3" wide jaw capacity. The spring is very powerful. They're perfect! If you think you need 2, buy 4! Here are some photos, including comparison with a Wolfcraft needle nose clamp. This is the link: https://www.walmart.com/ip/BESSEY-XCL5-Needle-Nose-Spring-Clamp-3-In/20742182