I'm fairly new to Alphacam, and trying to figure out how to overcut corners on a 90 degree inside corner without changing the geometry.

There has to be a way right?

Thanks so much

Can you give more detail what you mean by overcut? Not sure what your are after or trying to work around.

I haven't used it but look at knife loops, it might do what you want.

See attached.

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I've tried knife loops, but from what i've tried it only works for ouside corners. would work for pockets we have to cut inside of a shape, but not the outer profile

We've been doing this with sheetcam, but have recently made the switch to alphacam.

we need it for inside corners so that when we have a joint between two pieces, we don't have to clean out the rounded inside corners manually

i've attached a picture of what the geometry looks like once we have cut it, and what i have to manually do now.

the left is the overcut corners, the right is what we would like to be able to draw and apply overcutting tool path to.

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have u tried edit - fillet - reverse bubble

Just tried the bubble fillet, and it works quite well.
Thanks Mike!
We will definitely use that if we have to redraw the geometries.

I tested Knife loops on a outer profile and it seams to work for me. I don't like the path it creates but should do what your asking.

I prefer the bubble fillet but it does alter the geometry and you said that's not what you want? It will update the tool path a geometry at the same time.

Good luck

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This is what I think he is looking for

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I just use corner drill. I drill inside corners first with an Alphacam add-in called Corner Clean, then route the part. The inside radius is eliminated. The add-in can take care of dozens of inside corners in about a second. Once I discovered this, I use it all the time for plywood studs and horizontal framing parts.

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That sounds like exactly what I'm looking for

Thanks a lot Mike

KvanS, you need to clarify exactly what you mean, we can all speculate but without better info we can't really help. Are you talking about rest machining, where you cut interior geometry with a form cutter, then take a smaller cutter and clean up the corner profile? Or are you trying to overlap the first operation with another? Not sure....

dont want to mess up owners post but mike i can't find any help files on the corner drilling. if you can steer us in correct direction i think that would help a little. thx mike c

We use this technique when we are cutting plywood components that we are assembling together in a frame. plywood studs, as Mike called them.

basically we are making mortises and tennons in ply, that won't be visible, so we just need the shapes to be square, and don't care about the little bit of material on the inside corner, so we overcut them, or as mike suggested drill them out, and then make a normal router pass.

The add-in mike was talking about is available on the Add-Ins/Macros tab, under Add-Ins, and is called corner drill. just check that box, and a button comes up near the roughing pass, pocketing buttons under machining.

it's a great feature. And looks like how we will be taking care of this from now on.

i have it installed but when i click tab

it looks for a machining style.