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Making the Fingerboard

wpe4.jpg (6447 bytes)  The first step in making the fingerboard, which is not shown here, is to flatten the bottom.  I do this easily and quickly on my jointer, and couldn't think of an interesting photo for this step.  The next step, shown here, is to drill two index holes on the centerline of the board.  These are outside the area of the fingerboard itself, so they won't need to be filled later.  They help to hold the board accurately in the jigs which follow.  To drill these index holes I made a jig of Baltic birch plywood (which is quite dimensionally stable) and mounted two (actually three - for reasons I won't go into here) drill bushings, which guide the drill and won't wear with use.

  Another photo of the same.

fgbd-1-11.jpg (34810 bytes)

wpe5.jpg (14919 bytes)    The next step, shown here, is to taper the board.  I have a jig, made of Baltic birch, with wear surfaces covered with high density plastic, which is the exact shape of the board.  There are small metal pins on the jig which accurately hold the board and ensure that the taper is centered and symmetrical.  I do the cut with my spindle shaper and a straight cutter and a matching ball bearing rub collar. Actually very low tech (this could be equally well done on a router table) and works well. 




wpe4.jpg (5960 bytes)    The next step is to shape the top of the board to the correct radius ( I use a 14" radius).  This jig uses pins to locate and (partly hold) the board.  The board is really held with a vacuum pump - hence the small tube coming out the side and the pattern of slots and foam tape which you can see. 


wpe5.jpg (6455 bytes)    Here is the same jig with the board in place. 





wpe6.jpg (16982 bytes)       The tool I use to cut the radius is a Williams and Hussey planer/molder.  I use this tool for light thickness planning (particularly the blocks that make up the neck blanks) and for this job.  Although this tool is relatively small (it will only plane up to 7" wide in one pass)  and relatively expensive (I don't remember - I bought it a long time ago), it is very well built and works very well.  I have been very happy with it. 




wpe8.jpg (9844 bytes)     Here is a photo of the blade used to shape the radius on the board.  I had them (there are two) custom made and the cost was not all that high.  The combination of the vacuum jig and this cutter makes the most accurate and precise boards I have ever done.  I am absolutely thrilled with the process.


This website and all of its content, text and images are copyright 1997-2011  by Charles A. Hoffman.  All rights reserved.

2219 East Franklin Ave.
Minneapolis, MN. 55404

hoffmanguitars@qwestoffice.net or choffman@hoffmanguitars.com

(612) 338-1079