Examples
Examples
Try the starting example
- Finished square HST block side (in)
- 4
- Seam allowance normal to diagonal (in)
- 0.25
- Extra starting-square trim allowance (in)
- 0.125
- Starting square side, two-at-a-time method (in)
- 4.978553
- Unfinished trimming target side (in)
- 4.5
- Units per pair of squares
- 2
Try another scenario
- Finished square HST block side (in)
- 6
- Seam allowance normal to diagonal (in)
- 0.25
- Extra starting-square trim allowance (in)
- 0.125
- Starting square side, two-at-a-time method (in)
- 6.978553
- Unfinished trimming target side (in)
- 6.5
- Units per pair of squares
- 2
Calculation method
Calculation method
Starting square side, two-at-a-time method (in)
S=f+2s+sqrt(2)*s+t.
Unfinished trimming target side (in)
f+2s.
Units per pair of squares
2.
Symbols and units
- a
- Finished square HST block side (in)
- b
- Seam allowance normal to diagonal (in)
- c
- Extra starting-square trim allowance (in)
Use the units shown. A list keeps the order in which you enter its values. The symbol ^ means “raised to the power of”.
Assumptions & limits
Assumptions & limits
- Two-at-a-time only: stitch s either side of a diagonal then cut; ideal geometry, no fabric stretch. Trim is added to starting square, not final target. Supported limits: f>0, s>=0, t>=0; two equal squares; no 4-at-once or 8-at-once modes.
Are these inputs private?
These calculations run in your browser. A shared link contains the values you choose to share. Only questions submitted to the separate AI finder are sent to OpenAI.