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L corner brackets for 20, 30, 40 and 10-series extrusion
What size corner bracket for 2020 extrusion? · Hardware · basis: L bracket as wide and tall as the profile, one screw slot per leg at ISO 273 clearance (M5 Ø5.5, M6 Ø6.6, M8 Ø9.0, 1/4-20 Ø7.14), side gussets
Long Earth Society build part. Brackets and feet on the LES 2020 test stands; motor and bearing mounts hang off these. The engines
Exact dimensions. Every file is drawn at true size with no printing tolerance. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your printer's or process's clearance before making the part. Mating features
- sizes
- 4 in table
Notes
- Each bracket is an L the size of the profile (20, 30, 40 or 25.4 mm cube) with a gusset on each side.
- Leg thickness is 3 mm on 20-series, 4.5 on 30, 6 on 40 and 3.81 on 10-series.
- Each leg has one screw slot at ISO 273 clearance: 20-series Ø5.5 × 6 long (M5), 30 Ø6.6 × 9 (M6), 40 Ø9 × 12 (M8), 10-series Ø7.14 × 7.62 (1/4-20).
- The legs are flat; there is no locating tongue on these brackets.
Sizes
| series | size_mm | thickness_mm | slot_mm | screw |
|---|---|---|---|---|
| 20 | 20 | 3 | 5.5 × 6 | M5 |
| 30 | 30 | 4.5 | 6.6 × 9 | M6 |
| 40 | 40 | 6 | 9 × 12 | M8 |
| 10 (1 in) | 25.4 | 3.81 | 7.14 × 7.62 | 1/4-20 |
Mating features
Drawn at the exact size. Open press, slide, run and socket features by your process's clearance; leave designed gaps and clamp fits as drawn.
| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| bracket / gusset / plate screw holes | Ø5.5 / 6.6 / 9.0 / 7.14 | M5 / M6 / M8 / 1/4-20 clearance | designed | all |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Wikipedia | T-slot nut | web | CC BY-SA 4.0 (text) |
| OpenBuilds | Tee nuts and brackets for V-slot | web, STEP | OpenBuilds site verify |
| Long Earth Society | Engine and rig builds on extrusion frames | web, video | LES site |
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
| corner-bracket-20 | 20-series L corner bracket 20 × 20, two slots 5.5 wide (M5 clearance) × 10 long end to end (4.5 travel), side gussets | STEP · STL |
| corner-bracket-30 | 30-series L corner bracket 30 × 30, two slots 6.6 wide (M6 clearance) × 15 long end to end (8.4 travel), side gussets | STEP · STL |
| corner-bracket-40 | 40-series L corner bracket 40 × 40, two slots 9 wide (M8 clearance) × 20 long end to end (11 travel), side gussets | STEP · STL |
| corner-bracket-10in | 10in-series L corner bracket 25.4 × 25.4, two slots 7.14 wide (1/4-20 clearance) × 12.7 long end to end (5.56 travel), side gussets | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=t-slot-corner-brackets
How it fits
Goes in or on
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Questions
What screw for a 2020 corner bracket?
M5 through the Ø5.5 slot into a 20-series T-nut.
How thick is the 2020 bracket?
3 mm legs, 20 × 20 × 20 overall with side gussets.