Pressure Fitting. Replogle Saddles are designed to be “pressure fit” into the bridge slot. This refers to the process of lightly sanding and gradually adjusting the saddle width and shape slightly and only as much as needed in order to form a firm “finger tight” fit of the saddle in the bridge slot. 

The saddle’s fit should be snug and firm enough to hold the saddle securely upright when under string tension, but it must allow the saddle to fully seat in the bridge slot without being loose or wobbling in the slot. The consistent and even downward pressure of the strings on the saddle carries through to the bridge, the entire bridge/cone assembly, and the soundwell. 

It can be a slow and painstaking process to carefully sand, test, resand and pressure fit the saddle, but the reward is significant- as long as the saddle fit is snug and precise then the string pressure will give the best acoustic tone without buzzing.

Avoid Glue. Many luthiers and manufacturers regularly glue the saddles into the bridge slot as part of their standard production process, but this is a “permanent shortcut” for faster installation of the saddle, but gluing the saddle in the bridge slot is not recommended if at all avoidable. In addition to losing the performance benefits of pressure-fitting the saddle and bridge, once glued in place the saddle cannot be removed or adjusted in the future if necessary.  

The fine adjustment of an ebony-capped or compensated saddle requires repeated filing, fitting and sanding the bottom of the saddle to adjust the height, and premature gluing can ruin a biscuit and saddle. 

Inability to adjust a glued-in-place saddle’s height can affect the performance of the reso, in addition to the deadening properties of the glue.

As a last resort, once the saddle is properly fit to height it is always possible to glue the saddle into the bridge slot- if absolutely necessary. Most buzzing caused by ill-fitting parts can indeed  be cured that way, but at a sacrifice of tone and projection- so  gluing should be a final (and permanent) solution of last resort only.   

Height Adjustment. Replogle Saddles that have an ebony cap and/or compensation must approach the string height adjustment by removing material as necessary for the height adjustment from the bottom of the saddle. This may be done by hand or using a machine, but it is very important that the bottom of the saddle is completely square and flat once adjusted. There are luthier’s jigs available for use with a belt sander, otherwise sandpaper on a flat table can be used carefully for final truing up of the saddle edge where it will fit in the bridge slot.

Thickness Adjustment. Replogle Saddles are slightly thicker than ⅛” to allow for light sanding to get a snug fit in the saddle slot on the bridge, so some shaping should be necessary and expected.

Standard Replogle Saddle Dimensions. Each Replogle saddle is approximately 2-5/8″ x 3/4″ x 1/8″ (66.68mm x 19.05mm x 3.18mm). Final sanding, trimming and string slotting is required.

Shaping & Cutting. The width of the Replogle Saddle, at 2 ⅝”, provides adequate width for the most common and standard string spacings. 

Spider-bridge Saddle- 2-piece. When installing on a spider-bridge, the saddle will need to be cut in the center to allow for the “tension screw gap”. Biscuit-bridge Saddle- 1-piece. When installing on a biscuit-bridge, the center cut is not necessary but the saddle will overhang the edges of the 2 ⅜” biscuit, and shaping is generally done for cosmetic reasons, smoothing the line of the saddle where it meets the biscuit..