the goal is make a bend with a set inside radius
ok so I cut out a straight line from a corner so a bit like a chamfer but it is sized using some vex and carved to size by the geo's width and what ever size internal radius is wanted. And I basically create a three point ark.
for this to work the length from the corner point needs to be cut equally ether side or the ark will be bumped off line or not blend in well leaving a sharp edge allowing geo to overlap again.
The PROBLEM comes when bends are too close to each other not allowing enough geo on one side for the correct sizing.
Originally I was thinking to split the failed bends and do a second pass but this was not the fix. so now I believe that I need too carve the tightest bend first re-check angles to see if any nearby registered bends are still there or has the first carve cut it away and do the next bend until all required bends are made. I was using for each named prim before but the new idea has made my brain leave the building as it is trying to work out how to do all this in one wrangle node.