Here's a new video from Darren Oats, cued up to where my transparent Face Mortising Jig would have been helpful. He's built a larger one out of MDF that's good for only one size domino:
(starts @30:09 in, jig shows up 50 seconds later)
And his jig in use:
Table itself is very nice:
With my transparent jig, it'd be much faster and easier to align, and would work for multiple sizes of dominos. I note that he skips how he aligns his MDF jig up - I suspect it's a bit tedious and potentially nerve-wracking.