"Tim W" wrote in message
...

The very best way I know to clamp mitred frames:

Glue, screw or nail little 45 degree blocks on the outside of the frame
near
the joints so that you can put a g-cramp directly across the joint and
press
it properly together.

Does that make sense? If not I will draw it and post it for you on the
pictures group.

Actually I drew it anyway and posted it for you .
alt.binaries.pictures.woodworking
Subject - The surest way to cramp a mitred frame

Tim W