Читать книгу The Uke Book Illustrated - John Weissenrieder - Страница 12

The grimel is used to score the top, back, and sides for the purfling and binding channels. It’s a simple and versatile tool you can make from hardwood. It uses snap-off blades from a small utility knife and a screw or bolt to block the sliding arm.

Parts list:

Body=hardwood 2.5cm x 1.5cm x 8cm

Arm=hardwood 12mm x 12mm x 8cm

Pan head screw 3mm x 10mm

Washer 3mm x 9mm

Blade

Hex head bolt 6mm x 25mm

One side of the body is rounded so it can follow the curve of the waist of the ukulele; the other side is flat to ride on the top or back.

Bore a 12mm hole, then use chisels, files, and sanding blocks to make the hole square. The sliding arm should be a snug fit.

The slot for the blade in the sliding arm is cut slightly (0.5mm/ ¹/₆₄”) less deep than the width of the blade. That way the screw and washer hold it in place.

Pan head screw

Washer

Blade

Hex head bolt, 6mm x 25mm

A bolt threaded into the body blocks the sliding arm. Drill a 5mm hole for a 6mm bolt and thread the hole with a tap; or, if you don’t have a tap, put some wax on the bolt and slowly cut the threads with the bolt. In either case, you can harden the threads by putting a light coat of glue in the hole after cutting them.