You were probably using a Bonny Doon adjustable sawguide. Big thing
that clamped onto the bench edge. Frame spraypainted gold, with an
aluminum ‘bench pin’ and a big aluminum tower thing wherein rode a
rack that held your sawframe perfectly vertical while you sawed on
the adjustable ‘bench pin’. That sound about right?
If so, that would be the Mark I version. They’re discontinued, but
Lee Marshall (the original inventor) is making a new Mark II version
which he’s marketing as the Knew Concept Precision Saw guide. A very
nice re-design, solving some of the Mk I’s issues. Available for
You might be able to find an old, used Mk I on ebay, but last I
heard, they were going for well north of $250.
The usual disclaimers apply: no interest other than being the
satisfied owner of a Mk I guide that I wouldn’t part with for less
than a new Mk II.