2D Contour minimum cutting radius

[owen.smithyman]

I'm trying to machine a part with internal corners using a 2D Contour toolpath, but the tool goes straight into the corners, resulting in a sudden load on the tool (a classic CAM issue). Ideally I'd like to set a minimum cutting radius, mill as much as I can with a large tool, and then finish the corners with a smaller end mill using rest machining. This link suggests that 2D Contour had a Minimum Cutting Radius setting at some point, but it seems to be gone. Anyone know why? Is there something similar to replace it? Feed Optimization seems like a decent alternative, but I would trust a minimum cutting radius and Fusion's toolpath algorithms over my guess at which feed rate to use going into a corner.

Thanks,

Owen

[Steinwerks]

This is rather odd. It's actually still in there, but disabled (no way to edit the 0 next to it that I can tell):

If you're using Cutter Compensation you can fudge it using Compensation Radius Allowance which will push it into larger arcs around corners, but this is also reflected in your leads. I'll see if I can find a way to get that active again, but I wouldn't count on it.

@fonsecr is there a reason this isn't utilized anymore? It would seem quite handy honestly.

[Steinwerks · Accepted solution]

Well of course right after I posted I found out how to enable it. Turn on Roughing Passes, set Number of Stepovers to zero, and set your minimum cutting radius which pops in right under Make Sharp Corners:

Not sure why that isn't an option in a single pass though.

[fonsecr]

I'm actually not sure why it is only available when enabling roughing passes for 2D Contour. I have created ticket CAM-6592 so we can get it checked.

[owen.smithyman]

Awesome! Thanks so much. This really helps me out.

[keqingsong]

Minimum radius without roughing passes should work after our April 12 update!

[owen.smithyman]

Awesome!! Thanks for the update.