2D Contour Compensation

[Anonymous]

I am trying to get my chamfer mill to follow a line exactly (without offsetting the cutter to account for the diameter of the cutter). I have been searching and everything I have read says that to turn the compensation type to "off" to get the tool to follow the line exactly right down the center. However, when I turn the compensation type to "off" it does the exact opposite. It offsets the cutter by a very large amount.

[seth.madore]

That's odd. Can you share your file?

Right click on the file in the Data Panel and select "Share Public Link"

[Captain-DJ]

With 2d contour you can only use left or right to the contour.

You can try set an offset in options "stock to leave"...but i think you can try "2d projection" for thinks like this.

The dept of the tool must set on the 4. tab on the setting "axial offset" or so (i use the german version, don´t know the english word...and Fusion is not the fastest Software so i don´t want to switch to english) 😂

[seth.madore]

This is incorrect, there most certainly is a compensation of "Off":

[Ketherton21]

ive used 3d project, or what ive done is just make my tool tip .001 or as small as it will go for engraving, that way its only left or right by .001. 

[Anonymous]

Thanks everyone for the responses. I have changed the file since I posted this question so I can't share it. However, I did figure out a solution/workaround. I didn't figure out how to keep the bit centered with a 2D contour, however, I did end up figuring out the "trace" operation. If you use trace you can adjust the axial offset to get the tool path to follow the contour exactly.

[Anonymous]

I tried that originally. I had my tip set to 0.01". It was very noticeable since all the stripes are right there. One stripe might have had the tool on the inside of the stripe for both the top and bottom line of the stripe making the stripe noticeable thinner than the others.

I think for most things this would work fine but when you have several stripes of the same thickness stacked on top of each other it was noticeable. Although it may not have been if I set my tip width to 0.001".

[Captain-DJ]

Ok, my mistake, there is an OFF option.

But if i use a chamfer tool it never moves at the middle of the tool.

Tip is set to zero or 0,01

@Anonymous 

Yes i mean the trace operation. In german this will called: 2d projection

[DarthBane55 · Accepted solution]

I duplicated your issue with the same result when the tool is defined as a chamfermill (bug?), but, I redid your tool as a "tapered mill", and OFF works as expected.  Maybe Autodesk can look into this, it looks like a bug.

[seth.madore]

Yep, I'm seeing the same. I also find that setting the tip diameter to a very small value and using Computer Compensation also will keep it on center. It appears to be driving off the center in the case of Computer Comp and the full diameter in the case of "Off"

[Anonymous]

Thanks everyone!

[valery_osipov]

Hello, guys! Is any fix expected some time soon? Thanks)

[Anonymous]

Apparently not.  Fixing bugs is not nearly as sexy as adding new features. Autodesk seems to be copying the Google model of not giving a **** what their customers need, and focusing on what's exciting for the developers instead.  

[da_fish]

It's four years later and I am running into the same issue. Or am I doing something wrong? Could someone from Autodesk please advise???

[seth.madore]

@da_fish what is it exactly that you're trying to accomplish, can you share more details and/or a file that shows your issues?

[da_fish]

Certainly, 

I attached a file with some examples. In the file I am trying to scribe an X on the surface of the part with a chamfer tool that has a small tip diameter. Even though Compensation is set to off, it still compensates from the major diameter of the tool. But it should follow the line with the center off the tool.  If I use an endmill it does just that, as expected. But for whatever reason a chamfer tool doesn't.

[seth.madore]

Use the Trace toolpath, that is the intended workflow for engrave type tools and centerline cutting.

The behavior that you're seeing with a Chamfer tool and 2D Contour is expected behavior, thus the recommendation for using Trace 🙂