[HungryBear]

If you dont need the rails you could just buy a piece of longer flat metal and drill a hole I guess. Hmmm I might just do that myself........

Bear, since thread jacking is now "de regeur" , have you made a plastic plane board yet? I've thinking about it, but it would take a massive clean out of the garage first however. Homer said we should all climb into one , that we'd be surprised by our findings. A clean garage would sure surprise the heck outa my wife , thats for sure.

I have several (2) made them from 1/2 in. covered insulating foam board. Very light. tape together at cut-out side makes full 8 x 8 - 24-30 in radius cut - out.

I have also made pvc rail like vj did in alignment golf dvd. I used 2" sched 40 grey conduit (much cheaper than dwv-pvs) and 2 -2" "T's" and 2 2" 90*'s. cut 1 length of conduit up to make 2 uprights and 4 base legs (as I recall about 21-22 in total hight.) I take it apart and assemble at will- friction fit works OK

I have a portable 36 X 48 mirror which I put a frame around and a back standing frame piano hinged at top - covers full swing at about 8' in front of mirror, works well.

I have a high speed camera-casio EX-FH20- set it up behind and over mirror w/ tripod or plane edge behind- and I set up an exact ( no paralax) string plane . This can be BETTER than plane board because no possible mechanical interferance.

Lots of other "home grown" toys/tools but not related to plane.
I'll leave my sig on this post and U can see some of the "stuff" listed