12-28-2014, 10:51 AM
Make yourself a 2/3 circle or 1/2 circle template with 26" inside and 28" outside radius from Homasote and lay your curved tracks together, with the template between them, moving/sliding the template up as you go up the helix. I'd suggest painting or varnishing ALL sides of the MDF helix, as if you have ANY dampness, the MDF will absorb it from the air Laying cork is up to you, but be advised that any track-nails to hold your flex, will need drilling as you go - MDF is hard!