4th Axis Pocket Milling Fusion 360

[pelseyHYPS2]

I am fairly new to the world of 4th axis machining. I am experimenting with putting a pocket around a piece of material. This is just strictly practice in mile steel. I cut going around the part to see what kind of finish I would get, turned out okay. Then I decided to put a .825" wide keyway about 1.250" long end to end. Roughly .100" deep. 

My problem is the part runs fine in fusion. So I loaded it up and ran it in slowly just to see what would happen. This is the result and thus my problem......  

The center of the pocket is .825" wide but I have this stupid overlap at either side. This doesn't show up on my simulation this way which makes me think I have a setting or something off.

Anyone ever have a problem similar to this???

[seth.madore]

I gotta say, I like your first tag!

Would you be able to share your Fusion file here?
File > Export > Save to local folder, return to thread and attach the .f3d/.f3z file in your reply.

[pelseyHYPS2]

Here you go. It runs right in simulation but you see the results once I get to the machine 

[a.laasW8M6T · Accepted solution]

Hi

are you sure your rotary is moving the correct direction?

You may need to select reversed

This is the backplot with "Yes"

And this is with reversed

[pelseyHYPS2]

huh.. weird. Didn't even know that would make a difference on the tool path. Your pictures look exactly like what I was getting. I hate that kind of stuff, I would've never thought to look there. I'll try it! Thank you! 

[pelseyHYPS2]

That ended up working! Thank you very much!