I built a large one a while back and it is a bit large for my mini mill and definitely too large for the Sherline.
So I built a small one using 3/8" aluminum for the base and table and 1/4" aluminum for the side plates.
I have drilled holes in the table to match the tooling that I may need to mount. Most holes are 10-32 tapped.
There are a couple of 1/4-20. Two for the 4" rotary table (Import) and two more to secure the table in the milling
vise so I could mill the table square.
Prints are included with all dimensions except the holes in the base that are used to fasten the side plates to it.
There are two 10-32 holes at the bottom of the side plates for fixing to the edge that are drilled and tapped on the center of the base.
Two more 10-32 holes in the edge of the table for the pivot and angle slot.
Pictures show the alignment of the tilting table to the base or bottom plate.
If you are building one make sure that the holes in the table will work for your tooling. I have left a lot of space on mine
so it can be custom drilled and tapped in the future.