This video inspired me to build one too.
I ordered the hardware and plans from AugustHome Publishing Company for $21.95 CAN including shipping. I received a bag of small parts and a plan.
Here I've stated to make the parts:
I mounted it on a sled I made for my saw rather than use the saw's mitre gage, as the slots spacing on my saw table did not work very well with the jig.
One change I made was to increase the hight of the two adjustment blocks because the steel angle parts provided were bigger that the plan wanted. I didn't realize it until later so the hole on the back (which was to support a small MDF board for supporting the work piece could not be used.
Instead I dove-tailed the MDF board to hold it in place.
Here is a view of the MDF support being installed in the dovetail slot.
I also added a hose to take cuttings away.
