Bridge roots can be custom laminated from physical patterns. You can either supply a pattern you have made from new scaling, or from the original bridge if scaling will not be changed.
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Or, bridge roots can be laminated based on a drawn pattern.
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Here we see the laminates for a treble bridge getting a dry test fit.
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Laminates are bent to shape and bonded together in a trough of epoxy.
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Shown here are two treble bridges, two transition bridges and two bass bridges. All are raw, i.e. having been removed from epoxy-clamping/forming and seeing only minimal cleanup. If you prefer to do all the final trimming and shaping on your bridges, you can order bridges at this state of completion.
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This is a picture of a finished treble bridge root that shows how I can handle even very tight bridge doglegs.
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You can see here how the bridge root lamination terminations appear at a dogleg.
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Laminated bridge cap laminations are perfectly quarter-sawn from clear, tight-grained, hard-maple. I usually join two flitches of maple together to form a four-inch-wide board of cap material to cut the laminates from. This technique allows me to maintain the perfectly quarter-sawn quality across the entire laminate.
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Another view of the critical resawing that is done to produce the bridge cap laminae.
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Now these are quarter-sawn bridge cap laminae!
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An assortment of nice bridge cap laminae ready for epoxy.
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Cross-section of a finished laminated bridge cap. Note the perfectly vertical grain of the quarter-sawn laminae.
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One of my laminated cap installed on a piano. Because the epoxy lines are kept to a minimal thickness and the laminate grain direction is only slightly skewed, notching is barely any more difficult than with solid caps.
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Please contact me to discuss how Farrell Piano can craft bridge roots and caps for your restoration project.
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Links:
Sitka Spruce Soundboard Panels,
Laminated Soundboard Rib Sets,
Laminated Bridge Roots,
Laminated Bridge Caps,
Cut-Off bars,
Other Rim Modifiers,
Capped and Quartered Pinblocks,
Belly Jobs ,
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