I’m working on a ruled surface pavillon that will be built using CNC milling. The geometry is like a truncated irregular cone. There is a custom waffle structure built on which there will be screwed pannels. The waffle structure is tested and works. (figure 1) Problem is that when I unroll the surface built from a developpable loft and I cut it, it is warped and not at all the right surface. (figure 2)
Here’s what I tried to solve the problem:
I’ve tried solution in Rhino 5 and Rhino 6
-In Rhino, I analysed the gaussian curvature, which is 0 or 7 e-10 depending on the command (it should be a ruled or developpable surface)
-In Rhino, I built my surface from Sweep2, rebuilt curves and normal loft.
-In Rhino, I tested the commands Smash & Flatten, they give the same result
-In Rhino, I tested the command Squish, it gave a different result but not the right one.
-In Rhino, I built my surface from the ground up using higher tolerance (0,001mm)
-In Rhino, I unrolled the entire surface and not the single pannel.
-In Grasshopper, I built my surface from the ruled surface battery, with the same unrolled result
-In Grasshopper, I used unrolled Battery from: Fabtools, Peacock, Lunchbox,
-In Grasshopper, I used custom solutions (from old discussions) by @TomTom @Mahdiyar, @Tudor_Cosmatu
Here is the picture of the waffle structure assembled (figure 1)
Here is the picture of the unrolled pannel milled (figure 2)
Here is the .3dm with the unroll, flatten and squish profile.There is also the manual profile that is our goal (we measured hands-on the dimensions needed).
2019_04_29_Pavillon_Forum.3dm (5.2 MB)
Thanks in advance for your time