Well, If I was gonna do it.....
I'd get a cheap drill bit of a diameter equal to the largest diameter in your taper.
Cut a small piece of ply, the same thickness as your bit, at the 17' angle you need. Say a 1" piece of jointed/squared stock on the miter gauge on your TS.
Glue both sides to another thin piece of stock, using the drill bit as a spacer. Then glue a top onto that.
Mount this jig onto your grinder, square to the wheel. Put the bit in a drill, and slide it through the opening, and grind the tip down to the angle you need.
You'll end up with a sharp point that won't last long, but a small pilot hole should help with the drilling.
EDIT: I got the angle wrong in the pic. It's showing a blunt tip, but turn it 90' and it'll work. It's just a visual aid anyways, not a schematic.