This video covers the drilling out and replacement of several unsatisfactory mother of pearl (nacre) fretboard position marker dots on an oak fretboard for a Brian May Red Special guitar neck. The marker dots turned out too thin after final radiusing with a StewMac radiusing beam and 320 grit 3M Stikit Gold self-adhesive abrasive paper. I mill out the installed dots by mounting the fretboard back onto my Stepcraft 2/840 CNC machine with the help of a custom designed and CNC cut acrylic (perspex) alignment template. I then glue in replacement dots and abrade them flush with the radiused fretboard surface using a flat bladed diamond file.
Tag: nacre
CNC Cutting MayStar Mother-of-Pearl Inlays
I had been wanting to try some inlay work for a while, for a challenge and something different to do. I constructed the shape by overlaying arc and line segments over a zoomed high resolution image, adjusting all the positions until the spacings were symmetrical taking account of photographic parallax then finally traced over that with a polyline. Care needs to taken to get the feed rates and spindle rotational speed correct first time because this small (42 x 22 x 1.0 mm) sheet of mother-of-Pearl (nacre) cost £7.49 from Rothko and Frost. Next I need to compile the cutout toolpath for the perspex. This is not as straightforward as simply linearly scaling up the object in CAD and using it as a subtrahend to create a rebate. The entire object needs to be reconstructed from a closed polyline which has an outline that is uniformly larger by the cutter diameter.
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