after buying one of "compatible" bends to Verge model of Amazfit watch and receiving the strap I found that the adapter that was added to the strap was suffering from softness and I almost lost my watch twice at the first week of usage, then i threw the strap away and finally had some time to design and recreate the adapter by using the original strap that came with the watch.
the results are near great, maybe I'll add some improves to make it fit perfectly, the adapter holds it in place and very solid
doesn't really meter
I suggest to adjust the supports as shown in the picture
210 Celsius at layer 1
205 Celsius at layer 2
198 Celsius from layer 5 till the end
print at slow speed (I printed it at speed of 3000 mm/min and 80% of printer speed) to get the most accurate adapter