Tamron 17-70mm outer ring

my tamron 17-70mm hit the wall with an adaptor ring, and it cracked the filter thread. Though i sealed the crack with some epoxy i did not want to risk it further so i designed this ring to contain the damage. I tested it with PLA and PETG. both seemed to work fine but i went with PETG since i am using this gear outdoors. this should technically be universal, because it is nothing but a simple ring, just do a simple math in the slicer and scale proportionally.the dimensions should be 3.5mm + your lenses' filter thread outer dimension for instance, if your lens' filter thread outer dimension is 100mm, adjust the x y to be 103.5mm each. leave the z axis alone.