Placing the cardboard supports on the wooden strips, shuffling them around to use the minimum material while leaving room for sawing around them.
Slicing 17mm thick plywood into 320mm high strips. That's 311mm of highest helix support, plus room for saw blades. Just as well, the two strips...
Slicing 17mm thick plywood into 320mm high strips. That's 311mm of highest helix support, plus room for saw blades. Note metal "rail"...
7mm ply and 12mm MDF both screwed to 1x3 dimensional timber with the supports about 35cm apart - the same sort of distance as two helix supports.
Carved out cardboard supports using the measurements for a 7mm subroadbed and test-fit the spiral ramp to them. Putting a ramp onto supports is...
And now... I cheated. I actually cut out two spirals. I didn't trust the 7mm ply, so I cut a sheet of 12mm MDF at the same time. My poor jig-saw.
Take one Jig Saw / Sabre Saw and one draw on sheet of timber. Ensure the timber is raised more than the length of the blade (the observant will...