Brackets and mounts
Bessey TW16 Table Clamp
- Bounding box
- 135.5 × 100.0 × 285.5 mm
- Engine
- Precision B-rep
- Parameters
- 19
- Published
- September 18, 2026
Download
Free to download and use. See the terms.
The prompt
Write a single Python script using CadQuery that generates a simplified but dimensionally accurate model of a welding-table clamping element (Bessey TW16 series geometry) and exports it as STEP and STL. Build a functional stand-in, not a cosmetic replica: correct mounting interface, correct throat, correct clamping envelope. No logos, branding, or decorative detail. COORDINATE SETUP - Origin at the table top surface, on the axis of the mounting bolt. - +Z is up, away from the table. The clamp reaches out in +X. COMPONENTS 1. Mounting bolt: cylinder, 16 mm diameter, 20.5 mm long, extending DOWNWARD from Z=0 into the table hole. 1 mm chamfer on the bottom edge. 2. Foot: cylinder, 30 mm diameter, 10 mm tall, sitting on the table from Z=0 to Z=10, coaxial with the bolt. 3. Vertical rail: rectangular prism, cross-section 22 mm (in X) x 8.5 mm (in Y), rising from the top of the foot to Z = 265 mm total height above the table. Center it on the bolt axis in Y; align its -X face with the bolt axis so the throat projects in +X. 4. Sliding arm: horizontal rectangular prism, 22 mm wide (Y) x 20 mm tall (Z), cantilevered in +X from the rail. Its end face sits at X = 100 mm (the throat / projection dimension). Position the arm at a parametric height ARM_Z, default 100 mm. 5. Spindle: cylinder, 14 mm diameter, running DOWNWARD in -Z from the underside of the arm, centered at X = 100 mm. Length set so the pressure plate lands at height CLAMP_Z. 6. Pressure plate: rectangular pad, 41 mm (X) x 26 mm (Y) x 6 mm tall, centered on the spindle axis, its bottom face at Z = CLAMP_Z. 7. Handle (simplified): a cylinder 100 mm long, 20 mm diameter, on the spindle axis above the arm, oriented along Y. Placeholder envelope only. PARAMETERS — all named variables at the top of the file BOLT_DIA=16, BOLT_LEN=20.5, FOOT_DIA=30, FOOT_H=10, RAIL_X=22, RAIL_Y=8.5, TOTAL_H=265, THROAT=100, ARM_Z=100,
Parameters
| Name | Value | Range |
|---|---|---|
| Bolt Diameter | 16 mm | 6 – 40 |
| Bolt Length (below table) | 20.5 mm | 5 – 60 |
| Bolt Bottom Chamfer | 1 mm | 0.25 – 3 |
| Foot Diameter | 30 mm | 15 – 60 |
| Foot Height | 10 mm | 3 – 30 |
| Rail Depth (X) | 22 mm | 10 – 50 |
| Rail Width (Y) | 8.5 mm | 4 – 30 |
| Total Height Above Table | 265 mm | 100 – 500 |
| Throat / Projection | 100 mm | 40 – 250 |
| Arm Height (ARM_Z) | 100 mm | 40 – 200 |
| Arm Width (Y) | 22 mm | 10 – 50 |
| Arm Height (Z) | 20 mm | 8 – 50 |
| Spindle Diameter | 14 mm | 5 – 30 |
| Plate Length (X) | 41 mm | 15 – 100 |
| Plate Width (Y) | 26 mm | 10 – 80 |
| Plate Thickness | 6 mm | 2 – 20 |
| Clamp Height (CLAMP_Z) | 50 mm | 0 – 120 |
| Handle Diameter | 20 mm | 8 – 40 |
| Handle Length (Y) | 100 mm | 40 – 250 |
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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