Brackets and mounts
Sail Track Gate Cover Plate
- Bounding box
- 20.0 × 74.0 × 4.0 mm
- Engine
- Precision B-rep
- Parameters
- 12
- Published
- October 27, 2026
Download
Free to download and use. See the terms.
The prompt
Design a parametric, 3D-printable sail track gate cover plate for an aluminum sailboat mast. The mast has an elongated sail slide insertion opening measuring 75 mm vertically and 20 mm horizontally. Create a single cover plate that closes the left side of this opening while preserving a continuous unobstructed sail slide track on the right. Dimensions: - Mast opening: 75 mm high × 20 mm wide. - Cover plate height: 74 mm. - Initial cover plate width: 20 mm, adjustable to suit the required sail slide clearance. - Initial plate thickness: 4 mm. - Upper-left corner radius: R5 mm. - Lower-left corner radius: R5 mm. - Small exposed edge fillets: R0.5 mm. The plate must match the rounded opening at its upper and lower ends. Mounting: - Provide two vertically aligned countersunk holes for M4 screws. - Through-hole diameter: 4.5 mm. - Countersink angle: 90 degrees. - Initial hole positions: 10 mm from each end. - Hole center-to-center spacing: 54 mm. - All hole positions must remain editable. - Keep screw heads outside the sail slide travel path. Functional requirements: - Only the left side of the enlarged opening should be closed. - Sail slides must move freely past the plate. - The right edge must have smooth transitions into the existing mast track. - The plate must not rely on friction alone for retention. - Keep the rear mounting surface adjustable to match mast curvature. - Design for FDM printing in PETG or ASA. - Export as a watertight solid suitable for STL and STEP. All dimensions are in millimeters. Make the design fully parametric. Do not create the mast, screws, or sail slides.
Parameters
| Name | Value | Range |
|---|---|---|
| Plate Height | 74 mm | 50 – 120 |
| Plate Width | 20 mm | 10 – 35 |
| Plate Thickness | 4 mm | 2 – 10 |
| Left Corner Radius | 5 mm | 1 – 15 |
| Edge Fillet Radius | 0.5 mm | 0.1 – 1 |
| Through Hole Diameter | 4.5 mm | 3 – 8 |
| Countersink Angle | 90 deg | 60 – 120 |
| Screw Head Diameter | 8.4 mm | 6 – 12 |
| Hole X Offset from Left | 6 mm | 4.5 – 15 |
| Lower Hole Y | 10 mm | 5 – 30 |
| Upper Hole Y | 64 mm | 40 – 69 |
| Mast Curvature Radius | 150 mm | 50 – 500 |
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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