How to Glue the Bones to the Tie Block on the Bridge of a Classical Guitar

If you’re looking to attach the bones to the tie block on the bridge of a classical guitar, there is no better option than cyanoacrylate (CA) glue. This glue, particularly the thick viscosity, dries quickly and works extremely well for this purpose.

guitar repair

The repair process is a simple one and must begin with all the necessary resources: the bones you wish to use, the bridge blank with an attached tie block, binding tape, the CA glue, and an accelerator (should you want the glue to dry much faster).

To get started put the bones and the bridge blank and the attached tie block on the table to ensure that the bones are as square as possible. This is important because you will be inserting the most square-shaped side of the bones into the channel of the tie block. If you pick a side with more of a curve, your bone may not rest in the channel properly, despite the adhesive strength of the glue. Next, you can attach binding tape to the underside of your bridge blank; this helps keep the bone in place while the super glue dries.

Next, apply the glue to the channel of the bridge blank. Take the bone, remembering to insert the squarest side, and insert it into the channel. Once the bone is in place, spread your tape over the bone to tighten the bond. As mentioned before, the glue dries extremely quickly, so it shouldn’t be long before you can remove the tape and move on to the next channel. Here, you will have to remove the tape from the whole bridge blank, as you will not be able to use it on the next installation.

Apply the thick CA glue to the channel and insert your bone into the channel. Once the bone is in place, use another item such as a scraper to hold the bone in place. By sliding the scraper into the groove behind the channel, you can tighten the bond between the bone and the strong adhesive. After keeping it there for a moment, remove the scraper and ensure that the bone is in place. To speed up the drying of the glue, you can use a glue accelerator, which allows the glue to dry even faster. This will help if more bones need to be attached to the bridge blanks, and it will help save time as well.

The same process will be followed for any remaining tie blocks and bones. It is important to not use binding tape to secure the rest of the bones because the tape may damage these bones, or cause them to come loose from the glue. Therefore, a scraper or any strong, thin material or object is best recommended to retain the strength and rigidity of the bones, the tie block, and the bridge as a whole.

To finish off your guitar repair, make sure to trim the excess edges of the bones flush with the tie block for consistency.

The entire process is very simple, most especially due to the ease of use and glue’s ability to instantly bond. For all your guitar repair needs, CA glue is highly recommended, as well as any corresponding accelerator to ensure that your repair dries quickly, meaning you can use your guitar sooner.