Brackets and mounts
Adjustable Miter Bar SPT99T-01
- Bounding box
- 230.0 × 19.5 × 9.2 mm
- Engine
- Precision B-rep
- Parameters
- 21
- Published
- August 26, 2026
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Free to download and use. See the terms.
The prompt
Create an original fully parametric mechanical CAD model of an adjustable miter bar for a SKILSAW SPT99T-01. SIZE: 230 mm long × 19.0 mm wide × 9.2 mm high. The width must be adjustable from 19.0 to approximately 19.5 mm. MECHANISM: Design a rigid main runner with a longitudinal flexible expansion section along one side. Seven M4 adjustment screws, accessible from the top, push the expansion section outward to eliminate side-to-side play in the miter slot. Use captured M4 hex nuts; do not use printed threads. 7 SCREW POSITIONS: 18, 50, 82, 115, 148, 180 and 212 mm from one end. Positions must be editable parameters. PARAMETRIC: Make length, width, height, screw diameter, hole diameter, screw positions, expansion amount, nut dimensions and clearances editable. HOLES: M4 screws, 4.3 mm clearance holes, with recessed/captured hexagonal M4 nut pockets. PRINT: PLA, FDM, 0.4 mm nozzle, 0.2 mm layer height, printed flat, no supports. Keep the bottom flat and smooth. Minimum wall thickness 2 mm. Add small fillets to prevent cracking around the flexible section. OUTPUT: True parametric mechanical CAD model, not a mesh. Export STL and STEP.
Parameters
| Name | Value | Range |
|---|---|---|
| Length | 230 mm | 150 – 400 |
| Base Width | 19 mm | 15 – 25 |
| Height | 9.2 mm | 5 – 20 |
| Expansion Amount | 0.5 mm | 0 – 0.8 |
| Main Runner Width | 14.7 mm | 8 – 18 |
| Expansion Slot Width | 0.8 mm | 0.4 – 1.5 |
| Flexure Web Height | 2 mm | 1 – 4 |
| M4 Screw Diameter | 4 mm | 2 – 8 |
| Clearance Hole Diameter | 4.3 mm | 3 – 10 |
| Screw Row Y Position | 8.5 mm | 2 – 16 |
| Hex Nut Across Flats | 7 mm | 5.5 – 12 |
| Hex Nut Height | 3.2 mm | 2 – 7 |
| Nut Pocket Clearance | 0.2 mm | 0.05 – 0.5 |
| Fillet Radius | 0.25 mm | 0.05 – 0.4 |
| Screw Pos 1 | 18 mm | 5 – 225 |
| Screw Pos 2 | 50 mm | 5 – 225 |
| Screw Pos 3 | 82 mm | 5 – 225 |
| Screw Pos 4 | 115 mm | 5 – 225 |
| Screw Pos 5 | 148 mm | 5 – 225 |
| Screw Pos 6 | 180 mm | 5 – 225 |
| Screw Pos 7 | 212 mm | 5 – 225 |
Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.
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