Tool Path Issue on Imported Model

[powair7s]

I am importing the model from the picture below. I then apply a 3d finish toolpath. You can see the toolpath are not going to cut the entire shape. Does anyone have an idea why it is stopping prior to the bottom of the part?

Thanks!

[Adrian]

Looks like you haven't set a boundary offset in the toolpath. It needs to be at least the radius of the tool to allow the tool to fully "drop" over the edge of the model without impacting it.

[powair7s]

Thanks for the reply Adrian,

This is the result if I choose material boundary:

[dealguy11]

Try creating a vector around the component using the "Create vector boundary around selected components" tool, if you haven't already. Then use "Selected vector" rather than Material Boundary for the machining limit boundary, after selecting the vector. Then, set the Boundary Offset to at least the radius of the tool.

[powair7s]

I tried that as well...same result. It's really weird how the offset off the model is cutting at the top of the material rather than the base.

[Adrian]

Thanks for the reply Adrian,

This is the result if I choose material boundary:

Screenshot 2022-03-26 090643.pngScreenshot 2022-03-26 090759.png

I didn't say Material Boundary I said Boundary Offset. Set it to at least the radius of the tool (perhaps more) and it will cut fine.

[dealguy11]

By the look of the toolpath preview, the toolpath is constrained to the Material Boundary, not the part itself. That's not what you want. Whatever you had the Machining Limit Boundary set to in the image in your first post is what you want. Just add a Boundary offset, like Adrian said.

[powair7s]

Same result. I have done a few 3d model imports in vcarve pro and aspire and have never had this happen. Could it be something with my initial 0 plane setup?

[adze_cnc]

Steve & Adrian:

I think that there’s somethiing a bit more complex going on with the OP’s model.

Notice the vertical blue lines in the original post’s photo? Notice that they are still there in the photo shoiwng the 3D Finish toolpath using the “Model Boundary” and that the majority of the toolpath is going across the face of the material rather than eliminating the material by cutting down to the base of the material?

I don’t think that we’ve seen the full composite model.

Steven

EDIT: a new picture came in while I was typing the above. It looks like some kind of zero plane set to the apex of the model.

[dealguy11]

Steven - you're right. If you look at the second image in OPs first posting, you can see a transparent plane at the top of the part. I guess that's a zero plane? That would cause the bit to jump up to the top surface as soon as the outside radius of the bit hit the boundary vector ...i.e., before the center of the bit has a chance to get all the way down the side of the part.

Setting the zero plane to the bottom of the part should fix it.

Edit - could it also be possible that the part was imported below zero rather than above? If the zero plane is actually at zero base height, that could be the problem.

[powair7s]

Hey Guys,

I really appreciate all the replies. I have tried the 0 plane on the top, the bottom and in the middle. Here is the result from 0 plane at the bottom.

if anyone wants the model, I can email it to you.

[dealguy11]

Sent a PM with my email