Concave Shoulder

Part off the bulb after you've finished turning the headstock end and sanded to 220 grit, so that no tool or scratch marks remain.

Remount the bulb on a tenon and concave shoulder you've turned on the remaining waste material.Then complete the bulb's unfinished end: Drill through, shape the inside and sand the outside.

Hollow the bulb. First, use a straight scraper to expand the drilled hole.Then switch to a bent-shaped scraper to work the inside walls.

Part off the bulb after you've finished turning the headstock end and sanded to 220 grit, so that no tool or scratch marks remain.

Remount the bulb on a tenon and concave shoulder you've turned on the remaining waste material.Then complete the bulb's unfinished end: Drill through, shape the inside and sand the outside.

Use a piece of bent springy wire to gauge the wall thickness. Strive for a finished thickness between 1/8"and 3/16"—the thinner the walls, the lighter the bulb.

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