Buck Frobisher wrote:
That looks like an effective piece.

Another one is the adjustable one that Bill Turner made. He photographed it
and I scanned and posted the images for him a year or two ago. Here it is
again:



But I like the bottom to face me, not to be vertical or horizontal,
about 20 deg. up from horiz. Ken

I cant see where any of those does anything ? take it away and lay the
chassis on the bench .