I took another crack at this jig.


!/4" ply. All the spacing holes are 1/2" apart. Lots of adjustability. I will have to buy a bunch of 1/4x20 3/4" bolts. I stuck whatever I had laying around.


But here is the important thing. IT IS PARALLEL. It checks exactly the same on both ends. I do need to check all the possible height positions.


I measure out all the holes at 1/2" intervals, but I used a cC clamped fence to keep a constant position from the working face of each arm. I stated all the holes on only one arm using a Fostner style drill bit. I then clamped all the arms together and started the first hole. took forever with the Fostner bit, so I switched to a regular high speed bit.


I still need to had the magnets to the base arms.


Now to get all the bolts assemble the second jig AND BUILD A WHOLE BUNCH OF BI-PLANES.


Ken