[pianotech] Hammer pre-file jig

[jiimialeggio]

>
> You need to up the workmanship on your jigs! <g>
>
Thanks Tom.

Actually this started out life as just the simple lower clamp,  but was 
a pain in the butt even when clamped in a vise...just didn't work so 
good...so it morphed. Now it works.

Jim I
grandpianosolutions