pic: Just finished our pyramid. Conduit seems to work fine.

[RRLedford]

We have tested our pyramid assembly concept and found it works well.
However, we are still slightly off with our angles.
Can anyone use their CAD or trig expertise to confirm What is wrong?

We are trying to drill holes in the slope pipe and rung pipe such that a hole through the center of the rung pipe follows the line that connects the center of the slope pipe's plug with the point where the two pipes would tangentially touch if they weren't spaced out by the nylon tube washers.

It is not even clear of a line through the centers of the two pipes and the tangent contact point would be in a plane that crosses either pipe at a right angle to their length axis.

We want to drill the two pipes at a right angle to their lengths. We are drilling the tapped holes in the slope tube's plug insert at 98 degrees apart and the rung tube is drilled at 22 degrees downward angle from horizontal, but the PICs show that some angle(s) is/are not right.

I suspect that the two holes in the insert plug must be drilled at a different angle separation than the 98 degree dihedral angle, and that they may need to be in a plane that does not cut the plug at a right angle to its axis.

Many teams could affordably and easily build their own pyramid, or partial pyramid with this fairly simple assembly concept

Any help would be greatly appreciated.













-Dick Ledford