Bowl Segment Calculator

Your details

How many equal wedge-shaped pieces make up one ring. More segments give a rounder ring; fewer give a faceted look.
The finished outer radius of the ring (half the outside diameter).
in
The radial thickness of the finished ring (outer radius minus inner radius). Must be less than the outer radius.
in
Adds small allowances to the outer and inner measurements so you have material to trim back to finished size.
Cutting angle
15deg

Set your miter saw or sled to this angle on each side of every segment cut.

Outer segment length2.679
Inner segment length2.2
Segment thickness0.895
Inner ring radius4.25
Outer diameter10
Inner diameter8.5
Outer circumference31.416
Inner circumference26.704
Interior angle per segment30deg
Outer length2.679
Inner length2.2
Segment thickness0.895

12-segment ring, 10.00 in outer diameter - miter at 15.00 deg

  • Set your miter saw to 15.00 degrees on both sides of each cut.
  • Cut 12 segments with an outer face of 2.679 in and an inner face of 2.200 in.
  • Each segment blank needs to be at least 0.895 in thick (radial depth).

Next stepDry-fit all segments into a ring before gluing to confirm the joints close without gaps. Use a band clamp or segments-and-wedges clamping jig.

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