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Cantilever shelf plates for 15-series posts: 8 to 16 in reach
How do I hang a shelf off a single 1515 post? · Hardware · basis: Xem Studio design: a ¼ in triangular plate: its vertical leg bolts to the post, its top edge carries a 1515 shelf rail; 5/16-18 holes on the rail centre lines
Exact dimensions. True size, with no printing tolerance added.
- sizes
- 4 in table
Notes
- One plate each side of the rail, or one on the outside; the rail then carries a shelf board.
Sizes
| reach_in | plate_in | holes |
|---|---|---|
| 8 | 0.25 | 5 |
| 10 | 0.25 | 5 |
| 12 | 0.25 | 5 |
| 16 | 0.25 | 5 |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| 80/20 | 15 series T-slot profiles and fasteners (1.5 in rail, 5/16-18 hardware) | web | maker's catalogue; numbers cited |
Free files
★ Free files 4 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| cantilever-plate-8in | 8 in cantilever shelf plate, ¼ in thick: two holes on the post, three under the shelf rail (5 Ø8.73) | STEP · STL |
| cantilever-plate-10in | 10 in cantilever shelf plate, ¼ in thick: two holes on the post, three under the shelf rail (5 Ø8.73) | STEP · STL |
| cantilever-plate-12in | 12 in cantilever shelf plate, ¼ in thick: two holes on the post, three under the shelf rail (5 Ø8.73) | STEP · STL |
| cantilever-plate-16in | 16 in cantilever shelf plate, ¼ in thick: two holes on the post, three under the shelf rail (5 Ø8.73) | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=t-slot-cantilever-shelf-plates

Fits with
Free
1515 T-slot extrusion, 1.5 × 1.5 in (15-series inch)38.1×38.1 mm★ 16 filesFree
Slide-in T-nuts for 20, 30, 40, 45 mm and 1 in, 1.5 in T-slot extrusion6 sizes★ 13 filesFree
Socket head cap screws, inch: #10-24, #10-32, 5/16-18, 3/8-16, 1/2-13 (ASME B18.3)5 sizes★ 25 filesFree
Button head socket cap screws, inch: #4-40 to 1/2-13 (ASME B18.3)9 sizes★ 25 filesFree
L corner brackets for 20, 30, 40, 45 mm and 1 in, 1.5 in T-slot extrusion6 sizes★ 6 files





Questions
Load?
Depends on the plate material: print it for light duty or cut it from ¼ in aluminium plate.