Gyeokja-bit-sal
This engine recreates Gyeokja-bit-sal, in which 45° diagonal slats are layered over a vertical-and-horizontal grid. The 井-shaped weave and the diagonal weave meet on one surface, so each grid cell is divided again into four small triangles. As in the Bit-sal engine, cells are always fixed as squares, with vertical, horizontal and diagonal slats all drawn over them.
Slat Composition
| Slat direction | Angle | Role |
|---|---|---|
| Vertical · horizontal slats | 0° / 90° | The same orthogonal base framework as Jeongja-sal |
| Diagonal slats A · B | 45° / 135° | Diagonal slats layered along the square cells' diagonals |
Main Parameters
| Item | Description |
|---|---|
| Door type / panels | Hinged or sliding, 1–4 panels |
| Frame width / height | Wall opening dimensions (400–3,000mm). The outer panel size is calculated with the frame thickness removed. |
| Horizontal cells | 2–30. As with Bit-sal, this sets the number of square cells across; the vertical count is derived automatically. |
| Auto-fit height | When checked, the frame height is adjusted so the last row meets the bottom rail exactly |
| Stile / rail thickness | Outer frame thickness (mm) |
| Slat thickness | Base thickness for all slats, orthogonal and diagonal alike (mm) |
| Use transom panel | Adds a transom panel zone at the top when checked |
Gyeokja-bit-sal has no zoning settings like Jeongja-sal's "vertical ratio" or Se-sal's "top/middle/bottom layout." Diagonal density is not a separate setting — it follows from the horizontal cell count and slat thickness.
Production Specification
| Item | Description |
|---|---|
| Frame / outer / inner width and height | Automatically calculated measured dimensions |
| Diagonal spacing | Spacing between the diagonal slats |
| Slat layout line | Distance between orthogonal and diagonal slat intersections |
| Stile groove width | Groove width, calculated as a single value rather than separately for sides and top/bottom |
Parts List
Ordered as frame members → horizontal and vertical slats → diagonal slats → transom panel (if used) → door frame. That is one group more than Bit-sal, since orthogonal and diagonal slats are each tallied separately.
Finish & Color
Wood, finish, hardware and the frame and slat colors are the same as Se-sal. Panel fill is currently disabled.
Pushing the horizontal cell count too high packs the orthogonal and diagonal slats densely together, which can make the piece difficult to actually build. Export a PDF and check the measurements.
Example Uses
- Variations on the aja-sal (亞字窓) patterns of palaces and temples
- Changho for high-end hanok guesthouses
- Partitions for traditional craft exhibition halls