OK guys, so I have a speech impediment.....
BSM What were you drinking last night? I'll have a pint of what you're on!
Jeff
The UTTJ as described in the video runs on the rip fence. This has the advantage of being very flexible as regards what sub-faces you can attach for doing different jobs, and quick adjustment of the distance from the saw.
It can also be built to run in the mitre slot of the saw. This has the advantage that it can be removed, the saw used for another job and then jig replaced without losing any settings.
I'm currently building such a version.
The actual operation of the jig is the same in both cases. The jig just slides between two pre-determined positions, so the two cheeks can be cut without having to reclamp and ret the workpiece in the jig. Cut, slide, cut.
As to using it on a sliding table, I see no reason why not. As long as you have some means of attaching it to your ST (I imagine you could easily clamp it to your cross-cut fence) and that would require modification only to the lower carriage, then the ST will give you the same to-fro travel as when riding the rip fence.
The jig is limited only by the height of your saw. A 10" saw will give you 3" tenon length. So whilst it does not quite have the capacity of a double-headed tenoner, its combination of good capacity, accuracy, versatility and the fact that it is guarded, all make this my preferred method of cutting tenons. What other jig allows you to tweak the position of the tenon by 0.1mm without affecting the fit?
Does that answer your questions, Jeff? Let me know if you have any more. Money back guarantee if you are not happy. You'd be the first.
Cheers
Steve