I think the tubes they put in sandbox are great. However, since Ive been fiddling around with em it seems to me these things behave as erratic as can be. To get em lined up properly to me is always a case of luck. The most annoying thing to date is getting two corners on top of each other and make a tunnel in the sky from there. The height of two stacked corners doesnt seem to match anything. If you have any tips for me, please let me know.
well Im not a complete forge noob, so Ive already tried that. The problem is the ends of the tubes do not fit tightly 9/10 times and tubes sometimes do not stay straight on the ground. Double blocks even tend to cause that problem in the beginning. But to point out, where all this causes the biggest pain is with vertical stacking.