as requested on support…
Given a file:
which one wants to use to create a toolpath for surfacing, the difficulty of course is that some of the geometry is closed (indicated by being black), not open (magenta):
The geometry may be either re-created using Trim Vectors (which would require drawing in additional geometry), or Node Edited so as to open it up:
Zooming in:
right-click:
Cut Vector:
Select the nodes:
right-click:
Delete Nodes:
A further concern is things don’t quite line up:
(this will be addressed presently)
Repeat at the other end to arrive at:
Done
Select two lines to get the extent along Y:
and check the dimensions of the semi-circles:
Probably the best thing to do is to use the smaller part, so just drag everything into alignment:
Then select enough of the open geometry to make one element:
and Join Vectors:
Yes
Since it will be easier if things line up at grid intersections Scale:
Done
Drag things into alignment, delete the unneeded line:
Then use the Linear Array tool to make as many copies as are needed:
(with zero spacing)
OK
Node edit to clean up the hook at the end:
Done
