Tri-Bahtinov mask for 12" Dob

The tri-bahtinov mask is superior to the ordinary bahtinov mask as it makes it REALLY easy to fine tune your collimation. I created my template using this generator https://satakagi.github.io/tribahtinovWebApps/Tri-Bahtinov_symmetric.html

I split it into smaller segments to fit on my small printer. Works perfectly!! 

Printing:

PLA+

0.3mm layers

1.2mm wall thickness

25% infill (less is ok, but it must be able to withstand abuse)