Popular Woodworking 2002-04 № 127, страница 59
bars to align the frets, 3/l6" from each edge. Drill pilot holes where the fret lines and alignment lines cross and tap in the staples. Use a straightedge to get them level with each other. Traditionally, the dulcimer is a three-stringed instrument. When a fourth string is added, as I have done, the extra string is placed about 1/8" from the third string.
The "twin" sting reinforces the volume of the melody and is fretted and strummed with its sibling as a single string. For the bridges, use a bit of hardwood about double the size of a kitchen match, or a little more. Cut four string notches in the bridges at 3/8", V2", 13/16" and IV16" from the end that will be closest to the player, just deep enough to hold the strings slightly above the frets. Seat and glue bridge No. 1 at your mark on the tuning head end. Don't glue bridge No. 2. It is held in place by string tension, and it can be adjusted slightly by sliding if needed. A Sound Soundboard A soundboard that's too thick will give the instrument a "dead" sound. One that's too thin can be punched or damaged during normal use. Heavy woods, such as oak or hickory, will penalize sound quality. Select a springy, responsive piece of wood about 1/8" thick for this critical part. I used 1/8"-thick birch plywood. The soundboard must have holes to let the music out. No one hole shape works better than another, so take your choice of hearts, scrolls, diamonds, stars or just plain circles. Heads and Tailpieces The tailpieces anchor the strings on the end opposite the tuning head. The shape is arbitrary. Create a design that suits you or use mine on the previous page. The tuning heads slope down slightly in relation to the fret- 29 1/2" IT ir 1 Fretbar -see detail plan o long rib brace- Heart cutout o o 1" o.d. hole =y ,|ts1/4" overhang typical Soundbox plan 1 3/4" 1/8" Braces -1/4"X1/4" stock -1/8" Soundbox section |
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