Basicly it is a 2x4 with bolts coming up through through holes drilled at both ends of the steel pipe (conduit). Then I put washers, lock washers and nuts on the bolt on the inside and proceeded to tighten it.
Now make sure the bolt is close enough to opening of the pipe so you can tighten it.
You might be thinking why didn't I just put the nut on the other end where it would be easier to tighten.....well because then I probably wouldn't be able to get the bolt inside the pipe and through the hole.
The question also comes up...
How deep should I cut into the sidepieces? Well...It all depends on the curve of your ramp.
All I can tell you is that you don't really want the coping to sit out from the skate surface (curved part of ramp). When you go up to do tricks you don't want to hit the coping.
Try to get the coping level with the skate surface.
As for the platform side...I have the coping sticking out about 1/4" so your trucks lock in when you are grinding.
