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I tried it but it isn't holding the end of the belt on the left, it keeps coming loose.
I made a tight loop of the end of the belt so it won't pull out.
I'm also using https://www.thingiverse.com/thing:2337449 as an 'external' belt tensioner

Anet A8 Improved X-belt Tensioner with GT2 pulley
by TecNerd