[pianotech] cutting down a MH bridge

[David Love]

I like that suggestion.  Thanks.  

David Love
www.davidlovepianos.com


-----Original Message-----
From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
Of Jim Ialeggio
Sent: Friday, November 02, 2012 6:01 PM
To: pianotech at ptg.org
Subject: [pianotech] cutting down a MH bridge

On a router table, mount a bearing piloted rabbeting bit. Choose a rabbeting
bit the depth you want to reduce the bridge width by.

With the rabbeting bit, using the pilot bearing, follow the existing bridge
body. This will cut a rabbet along the length of the bridge.

Then, using a bearing over flush trimming bit, again on a router table, let
the bearing follow the rabbet you just cut to trim the rest of the bridge
body. The flush trimming bit  will reduce the rest of the bridge by the
width of the rabbet.  I'd band saw close to the finished width, using the
rabbet as your guide, before doing the final flush trimming.

Don't do any band sawing until you've cut your rabbet because you need the
existing bridge body to be there as the index for the initial rabbeting bit
operation.

Jim Ialeggio

-- 
Jim Ialeggio	
jim at grandpianosolutions.com
978 425-9026
Shirley Center, MA