MFT-Style Track Saw Guide Rail Hinge [Updated]

After first watching Tamar's video I really wanted to try a 3d printed rail hinge. I was disappointed she didn't offer the files for sale so I ended up continuing to look. Thank you to the original author for building this and publishing the 3df! It was (is) a little beyond my fusion capability to build hinges still. The Dashboard rail hinge that I was looking at buying, which looks very nice, also costs more than a track saw and I am not a professional that needs something that overbuilt.

When I first tried printing this file it was for my Kreg Accucut track - no big surprise but it didn't work well. Thankfully the original author uploaded their 3df file which allowed me to easily make modifications. A few months of using that (worked well enough with my circular saw!), I ended up getting a Milwaukee M18 track saw. So I made a few more modifications and decided to share them. 

One issue I experienced with the original design was that the front pin can rock back and forth on the fastening bolt, so I added grooves to each part so the pin plate cannot change angle, even slightly. I also enlarged the pin as it was a bit narrow for my Milwaukee guide rail.

I also couldn't figure out why the hinge had the cutout for the track insert piece - either my tolerances weren't right or something was off - the hinge printed perfectly but the track insert was too tight in the hinge cutout and either wouldn't fit inside the cutout or once I forced it together it wouldn't come apart; which led to me destroying my first print trying to get it apart.

So I decided to make the hinge solid/flush and have it just be a friction fit between track insert, rail guide, and hinge. I built a new connector which is honestly a bit too tight but can be tapped in with a block of wood and a mallet (or sand it a bit).