Yes, you can cut holes without the Jasper Jig, but for me life's too short and I'm too lazy . . .

• Jasper Jig Combo Pack at PE

Gar.

I was waiting for this deal to come around again, thanks.

My plan is to mount one on my roto tool router attachment
and save the bigger one for an actual router. Last go-round
on deals at the local tool superstore I got the spin tool
and have actually made the thing work. Some problems handling
stock like not having the right hold-down and clamp setup
so it's a good thing I have spares blanks to finish off
my project.

The router attachment is made of some sort of cheap
white metal and I'd have to match up a set of mounting
holes on the Jasper by tapping the base of the router
attachment.

Does this sound impractical to anyone?

I actually had the idea of getting a small lucite cutting
board from the Farm and Fleet or someplace and doing likewise.

Bill, can you provide details and tips?

The Jaspers are made for precision in 1/16 increments. I can
see that if the builder was working with few driver types that
some standard centers could be used without the 1/16
machnings. But when routing rabbets, those 16ths might come
in handy.