Mechanical parts
Rounded Mounting Plate with Countersunk Holes and Vent Slots
- Bounding box
- 70.0 × 147.0 × 2.0 mm
- Engine
- Precision B-rep
- Parameters
- 17
- Published
- October 19, 2026
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The prompt
I need a rounded-corner rectangle measuring 70 mm in width, 147 mm in length, and 2 mm in thickness. The part features four countersunk through-holes for screws. Each hole consists of a 5.1 mm diameter circular through-hole with a 9 mm diameter by 1 mm deep countersink. The four holes are arranged in a rectangular pattern, aligned with the sides of the main rectangle; the center-to-center distance between the holes is 51 mm along the long side and 40 mm along the short side. These four holes are positioned toward one of the short ends of the rectangle, with the centers of the holes closest to that edge located 5 mm from the edge. Additionally, there are 12 rectangular through-holes arranged in two rows, with 6 holes per row. Each rectangular hole measures 25 mm by 3 mm. Within each row, the spacing between the rectangular holes is 22 mm, and the distance between the two rows is 13 mm. All edges must be chamfered.
Parameters
| Name | Value | Range |
|---|---|---|
| Plate Width | 70 mm | 20 – 300 |
| Plate Length | 147 mm | 40 – 400 |
| Plate Thickness | 2 mm | 0.5 – 10 |
| Corner Radius | 5 mm | 0 – 20 |
| Edge Chamfer | 0.3 mm | 0.05 – 0.8 |
| Through-Hole Dia | 5.1 mm | 2 – 8 |
| Countersink Dia | 9 mm | 4 – 20 |
| Countersink Depth | 1 mm | 0.2 – 4 |
| Hole Pitch (across width) | 40 mm | 10 – 120 |
| Hole Pitch (along length) | 51 mm | 10 – 200 |
| Edge to Nearest Hole Center | 5 mm | 3 – 40 |
| Slot Length | 25 mm | 5 – 60 |
| Slot Width | 3 mm | 1 – 12 |
| Slots per Row | 6 ea | 1 – 12 |
| Row Count | 2 ea | 1 – 4 |
| Slot Pitch (along row) | 22 mm | 4 – 60 |
| Row Offset | 13 mm | 3 – 40 |
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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