First time poster here so be kind if this is a total novice question. I need to design circular benches to go around a wooden, circular hot tub. The goal is to export a file and cut the arched slats on the CNC. The attached pic is an example I’m looking to emulate. I need to cut the boards for the seat.
I struggled with making the inside circle and using off-set to expand it but that didn’t work right. I then found out that starting with the maximum size diameter and working to smaller circles was much more effective. Beyond making the concentric circles, I also need to divide the whole thing into 3 seating sections and divide each concentric circle into sections so I can cut the individual planks out of a wide board.
At this point my main question is, “How do I break each concentric circle that represents a 3.5in wide board, into manageable sections to cut on my 3.5ft square CNC?”
It would help if you share the .skp file so we can see what you’ve got going on.
Offset distances on arcs are from the flats. When I want accurate radii for both the inner and outer arcs/circles, I skip using Offset and just draw the arcs for the inner and outer edges.
As for dividing the thing in thirds, you may be able to cut the thing but it depends on how you created the objects. Personally I would model just 120° of it and use Rotate/Copy to make the other two thirds.
Again, it depends on exactly how you modeled the thing.
Could you upload a sketch? I’m not sure exactly what you’re trying to achieve. Just a quick doodle will probably work.
I added a inspiration photo to the OG post.
Just looking at it.
What is the OD of the hot tub and how much space between the hot tub and the bench? Are you planning backrests on the benches?
OD of the hot tub is 7ft. I was thinking 1/2 in space between the tub and bench and 1/4in gaps between each row of bench slats. And a 1/4in gap between the ends of the bench slats.
This is benches on the outside?
Stayed tuned for a PM from me.