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Forum topic by CNCBert posted 02-18-2020 01:18 PM 279 views 0 times favorited 2 replies Add to Favorites Watch
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1 post in 146 days

02-18-2020 01:18 PM

Topic tags/keywords: question

Hello Everyone,

Anybody have a Rich Auto controller for a CNC wood lathe? I recently purchased one and cant seem to get it to read a program. I am currently creating my shapes on Mastercam and creating the g code program from there. When I try to run the program, I keep getting arc to small error. I am stuck!! Any info, or a direction to look for tech support would be appreciated.



2 replies so far

View ErikF's profile


652 posts in 3021 days

#1 posted 02-23-2020 11:36 AM

Did you get this figured out?

Looks like their website is stocked with manuals.

Did you buy the controller to add to the lathe or did it come with the lathe?

-- Power to the people.

View DS's profile


3503 posts in 3197 days

#2 posted 02-27-2020 03:33 PM

The radius of the arc cannot be smaller than the radius of the cutter.

I’m using AlphaCAM and ran into something similar to this doing stylized 3D lettering from truetype fonts.
I had to revise my tool paths making sure all the curves were larger than the radius of the tool I was cutting with.

After struggling for the better part of a day with tool paths, I dropped down to a smaller radius tool and it ran beautifully.

P.S. also pay attention when two arcs join in corners that there is good clearance for the tool all the way to the corner, otherwise segments of the toolpath can get “orphaned” (my word) and the controller cannot resolve them.
I’m tossing a lot of stuff out there, but hopefully you’ll find something useful from it.

-- "Hard work is not defined by the difficulty of the task as much as a person's desire to perform it.", DS251

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