If tanks are your thing, then you might be pretty interested in JackCarter's activity over on Instructables and Thingiverse.
Using a 1:18 scale, JackCarter faithfully recreates various tanks using a laser cutter and 3mm MDF. Featuring hundreds of individual parts, it's a bit of an endeavour to put one together, but the results are certainly worth it!
So far he has made the Panzer IV GH motorized, Renault B1 bis, M4A3E8 Sherman, StuG III F, and the KV-1. Make sure to follow JackCarter on Instructables and Thingiverse to keep up with his latest builds.