Start cuts on outside of stock at both ends

[mellamanjefe]

This is a simplified model of a piece I am working on. It is two rectangular prisms connected in the center by a tab. The center cut was originally programmed with a 2D contour operation. The problem I ran into is that when the cutter exits the stock it often lifts the material from the faces of the prisms damaging the finished faces. I have modified the contour operation to force the machining to not run all the way to the end of the stock, then repeated to the other side and finally added the original operation to perform the cuts entirely across. This way the cutter does not cut material while exiting the stock so as to not damage the finished faces. I achieved this by breaking the full cut into 3 different operations and it only really works because the space between the prisms is 3.2mm and I am using a 3.175 mm cutter.

https://knowledge.autodesk.com/community/screencast/a43da2cb-227d-4d6b-971c-3ffbc1f7f978

So I am wondering if there is a different way in Fusion to achieve this behavior or if going about it how I did is the way to go about it. I just could not find an operation that would do this on its own.

[mellamanjefe]

Sorry, tried different ways to attach the screencast...

[daniel_lyall]

Are they going to be made of wood if so you are doing it the correct way?

Wood will breakout at the end of a cut, cutting with the grain, not across it will help a lot, also have a bit of wood at the end of the cut will also help as this stop what you are cutting from breaking out as it is against the faces of the material.

[mellamanjefe]

Thank you @daniel_lyall , yes the pieces are being cut from wood bars. The wood was splintering at the end of the cut when I had only programmed a single pass for the entire length. This is why I was searching for an operation that would break into the stock from both ends before cutting the inside length of the stock. I could not find a single program that would do it but was able to piece together 3 operations to achieve the goal. I am wondering if maybe there is an operation within Fusion that can be programmed directly to do what I described and I missed it because of my inexperience with the program.

-Marco

[daniel_lyall · Accepted solution]

Its tear out not breakout silly me (https://www.popularwoodworking.com/techniques/your-guide-to-tear-out/).

There is no toolpath in fusion360 for it.

Unless you do a silly workaround like what the attached model has.

[mellamanjefe]

@daniel_lyall, yes, it makes it easier if one uses the correct terms :). I should have looked it up before posting. Thank you for the link to the article, it is very informative. I will continue to fake operation logic to make cuts that will keep the wood from tearing.