The file '8020 15-series Bracket Collection 3D Printer Model' is (stl) file type, size is 846.7KB.
This is a set of some commonly used connectors with the 15-series 8020 bar. Components:
4301, 4-hole inside corner bracket (this one is a bit bendy, consider the gusseted version)
4302, 2-hole inside corner bracket
4307, 2-hole flat plate
4332, 2-hole gusseted inside corner bracket
4336, 4-hole gusseted inside corner bracket (I added a diagonal member since this is plastic. Really sturdy in PETG!)
4442, 3-way squared connector (For connecting 3 bars together at right angles. Note this requires tapping the ends of the bars with 5/16-18 threads)
And also 1- and 2-hole T-nuts with hole sizes appropriate for 1/4-20 and 5/16-18 taps. Those you should print at 100% infill.
I've printed all of these without supports, in the orientation given in the file. 20% infill works just fine.
Real versions can be bought here:
https://8020.net/4301.html
https://8020.net/4302.html
https://8020.net/4307.html
https://8020.net/4332.html
https://8020.net/4336.html
https://8020.net/4442.html
8020_15-series_2-hole_T-nut_1_4-20_tap.stl | 26.1KB | |
8020_15-series_2-hole_T-nut_5_16-18_tap.stl | 28.8KB | |
8020_15-series_T-nut_1_4-20_tap.stl | 20.4KB | |
8020_15-series_T-nut_5_16-18_tap.stl | 22.5KB | |
8020_4301_4-hole_inside_corner_bracket.stl | 62.0KB | |
8020_4302_2-hole_corner_bracket.stl | 59.2KB | |
8020_4307_2-hole_flat_plate.stl | 25.3KB | |
8020_4332_2-hole_gusseted_inside_corner_bracket.stl | 115.7KB | |
8020_4336_4-hole_gusseted_inside_corner_bracket.stl | 188.5KB | |
8020_4442_3-way_squared_connector.stl | 1.7MB |