Tevo Tarantula corner stiffner for 2020 aluminium profile

You have to print at least two of them. There is a top and bottom side. The bottom side is 60° phased to avoid an elephant foot to make sure it fits perfectly straight.

Every corner stiffner is mounted with 4x M4x10 screws, 4x M4 washers and 4 M4 T-nuts.
If you dont have T-nuts, just print sliding nuts for a standard M4 nut and a 2020 profile.

The orginal solution is garbage but with these printed parts you get a pretty rigid frame.

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