: Hi Jo . . .
: . . . The station forms are held using sturdy well braced
: boards,Mine are old, very well seasoned Kauri floor boards.There
: is some fun in getting them all lined up,but with string lines
: and careful rocker height measurement . . .
: Paul .NZ.

I tried using one of those laser line gadgets instead of the string trick, but I found the type with a lens over the lazer doesn't deliver a perfectly straight line, so back to the string . . . there are better types that spin the laser on a motor to deliver a truly straight line but they are too clumsy and quite a bit more expensive. Also, if the surface they are projected on is not perfectly flat the line will not be straight anyway.