Customizable Repair Caps for Residential 1x4 Cedar Trim Boards

thingiverse

The bottom ends of some of the 1x4" cedar trim boards on our house soak up moisture from the rain and are frequently struck by the lawn mower, particularly at the outside corners. Rather than replacing the entire board, this design is for customizable caps that can be placed over the end of existing boards to prevent further damage. The end caps may be installed using nails or caulk. Default parameters are set for 1x4" trim boards (actual dimensions 3.5" x 0.75" in the USA) - please measure your actual board and adjust accordingly. Ninety-degree corner sections are designed for two boards of the same width butted against one another. For wider angles, such as those found on bay windows, it's recommended to combine one open-end and one closed-end single-board cap. A cedar-like surface texture can be generated optionally or added manually using caulk and a paintbrush. The "skirt area" extends the board length, for example, to replace a removed rotted end. The "nailing area" is tapered to minimize filament printing thickness at the top. Printed nail holes are optional; it's recommended to attach with caulk instead. High infill is suggested for pieces that are regularly struck by a lawn mower or other heavy objects. Fire-retardant filament is highly recommended, and painting is also recommended. Modify the SCAD file to enable generation of needed pieces (straight or corners), then use your Slicer software to delete any pieces you don't need. Updated 8/29/20: Added optional texture and enabled specification in the SCAD file whether to render open-ended pieces.