CCF-KIRBY MITER FENCE HOLDER DETAIL.pdf
The above PDF can be downloaded and has the measurements for the holder parts - its rather simple,
Really takes a top plate, a block and a compound T-slot strip, plus you need a 5/16-18 x 3" bolt and a 5/16-18 female threaded knob the latter two can be bought most hardware stores.
I'm pretty sure you can hew the pieces for this out of a short piece of 2x4 using your BT3000.

LCHIEN
twistsol