Читать книгу The Uke Book Illustrated - John Weissenrieder - Страница 11

Circle cutter, for the cuts that define the rosette channel

3 blocks of hardwood (or good-quality plywood), approx. 1cm x 2cm x 2.5cm

1 slat of hardwood, 2cm x 5-6mm x 8-10cm

Blade from a box cutter/knife

Nail and drill bit, approx. 2.5mm diameter

3 screws, 3mm x 15mm, flathead or pan head (to fix the “beam” to the center-pivot block and the blade-holding block)

3 washers, 12-15mm diameter

Pivot block

Blade-in holding block

Beam

Nail

Screws

Washers

The blade sticks out 0.5mm from the slot, so pressure from the slot holds it in place. Once assembled, make a test cut; set it to cut a circle approximately 70mm in diameter, and make the full-circle cut. Make the first pass very light, gradually deepening the cut to the full depth in the successive passes. If the blade “drifts,” check to see that it’s square to the pivot, and make any necessary adjustments to the blade-holding block, such as re-cutting the slot. Continue testing and adjusting until the cut is of a constant radius.