Hi,
I have been trying to cut a pretty detailed STL that has a lot of regular curves. I’m finding that the current cam software that I am using does not have arc interpolation. So it is creating a lot of tiny lines segments and the cuts are taking an extremely long time.
Does carbide create pro have any arc interpolation?
No, Carbide Create also converts all geometry into polylines so as to make the math easier and calculations faster.
That said, with the acceleration/motion planner in Grbl, so long as the buffer stays full a bunch of short-line moves which approximate an arc should cut about as quickly as the G2/G3 arc which they describe — at least that’s my understanding — someone who understands the Grbl source such as @chamnit could better explain this.
What CAM software are you using?
I am currently using Kiri:Moto when I cut STL files. I am trying to figure out if carbide create pro would be an improvement.
I’m trying to cut a STL of a Mayan calendar. The outside perimeter is circular but has many different features etc. I am uncertain if the STL is just always going to be really slow and difficult because of its unique shape or if there’s any kind of CAM software that can help me speed it up.
Link to the STL?
I would try MeshCAM — it’s been around longer and doesn’t have any notable limitations and has a lot more options for toolpaths.
Thanks, I will look into mesh cam.
I downloaded it and checked the size:
(and got a message that it needed to be repaired)
Made a suitable file/piece of geometry:
and imported the file:
which seemed to preview well:
Offsetting the outer geometry by endmill diameter plus 10% or so:
we then apply 3D Roughing and Finishing toolpaths:
There are a bunch of near vertical features, so you would need to use care in assigning a toolpath using a tool such as a #121:
Probably it would be necessary to use a much smalller offset which wouldn’t allow the tool to try to cut along the perimeter of vertical features which are taller than the cutting flute length.
Maybe Kiri Moto He’s taking so much longer because I did not heal the geometry.
I also am using an 1/8 end mill mill for the roughing.
I think I might try the carbide create pro trial version to compare against what I’m doing.
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