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“I keep meaning to send an email and let you know that I got the prem. Indian Rosewood and was very pleased. You all at LMII have always given me great reason for trust in doing business with you. You have always treated me well and in a prompt and professional fashion. You have always helped with any problems that I might. have. Your staff is knowledgeable and professional and the materials have been great. You guys run the type of business that makes me look for things I need that I can get from you. If that doesn't work (look for things I might need in the future). Thank you for giving me a place where I can buy my materials with confidence.”

Michael M.

Plate Joining Jig

JoiningJigPJJNaZOOMOur “New and Improved” Plate Joining Jig (PJJN) has some slick new features you will enjoy. The unit is self-contained and does not need to be bench mounted. There are holes machined into the base so it can be temporarily clamped to your bench while joining your back or top. Once your plates are glued up, you can create space setting the jig aside while your glue dries. The PJJN is a simple, robust, bolt-together design which can be easily dissambled for storage. The base of the jig is now constructed from non-stick HDPE (high density polyethylene) and the top is protected by high-tech Kapton® tape.

We have used these jigs in our shop for year to join backs and soundboards. The process is simple. Just joint or plane the edge of the board to be joined. Sand it for a perfect fit. Place it in the jig and put the lattice over the top making sure the joint is flat. (1) Lace the lattice and base together and insert triangular tighteners. (2) Gently hammer in till the fit is tight. (3) Allow glue to dry and voila, a professionally joined top or back. We use our LMI FGX glue exclusively for this purpose with great results.

HomepageVIDEOtipsRed75This video by
luthier and instructor Robert O'Brien
demonstrates how to use the LMI Plate Joining Jig.


SKU Product Name In Stock Each  
PJJN Plate Joining Jig for tops and backs Yes $145.74