Neptune 2 X Axis Belt Tensioner Bracket

thingiverse

This bracket allows use an Ender 3 belt tensioner on the Neptune 2. You have to modify the runner by trimming the notch to 7mm as shown in the picture this can be done easily with a Dremel. Here is the tensioner I used. https://www.amazon.co.uk/dp/B08DRHFJ7V/ref=cm_sw_r_apan_glt_fabc_NMT95DWGYHGMFST2JE9G?_encoding=UTF8&psc=1 It's up to you how to attach the bracket to the printer. If you have threaded inserts you can use them or a nut and bolt. You could try tapping a thread into the bracket but I'm not sure this will hold. I printed in PLA and it flexes a bit but still perfectly serviceable would advise printing in something stiffer if you have it.