# Thread: Chamfer tool in 3D

1. ## Chamfer tool in 3D

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Has anyone had success using AutoCAD's CHAMFER>ANGLE command to chamfer in 3D? Distance/Distance works fine, but I haven't yet figured out how to use the chamfer tool to put a 30 degree chamfer on a cylinder (or any angle for that matter) by specifying a distance and an angle. Seems like it should be simple, but I always give up and end up creating the tapered edge by revolving a polyline that already has the chamfer, or using the TAPER>FACES tool.

2. No problem here using 2010. It probably is not as intuitive as it could be but that's AutoDesk for you. I got it to work the first time out on both a box and a cylinder.

My inputs for the cylinder shown below.

Command:

CHAMFER

(TRIM mode) Current chamfer Length = 0.2500, Angle = 45
Select first line or [Undo/Polyline/Distance/Angle/Trim/mEthod/Multiple]:
Base surface selection...
Enter surface selection option [Next/OK (current)] <OK>:

Specify base surface chamfer distance <0.2500>:

Specify other surface chamfer distance <0.2500>:
Select an edge or [Loop]: Select an edge or [Loop]:

3. Yeah, 45 degrees works for me too because AutoCAD seems to ignore the ANGLE option and defaults into Distance/Distance mode resulting in a 45 chamfer. Can you make a 30 degree chamfer using CHAMFER and specifying an angle?

4. Can I? Yes, but not without first knowing the distances which to me doesn't make a whole lot of sense. If I know one of the two and the angle then AutoCAD should be able to do it. I must not be using the command correctly. Maybe the Angle option only works for 2D objects?

5. Originally Posted by nestly
Can you make a 30 degree chamfer using CHAMFER and specifying an angle?
Originally Posted by ReMark
Can I? Yes, but not without first knowing the distances

I just found another related thread here, and a tutorial by Matt Murphy which seem to confirm that AutoCAD can't do that simple procedure in 3D, which is pretty lame.

Thanks for giving it a try.

6. Yes, my answer is No. Clear as mud?

Maybe it's been changed in 2012? I'm telecommuting today so I cannot check it. Will have to wait until I return to work on Monday. I'll have to check out that tutorial. Thanks.

At 1 minute, he says "When you chamfer a solid, there is no angle option"

I still have a hard time believing AutoCAD doesn't have that ability, and also how long it took me to figure out I've been banging my head against a wall this long trying to figure out why I couldn't make it work.

8. A revolved surface will give you any angle you wish...

rev_slice.JPG

KC

9. I can't get the chamfer tool to work right either. It asks for a distance, then an angle. Then completely ignores the angle and asks for a second distance. Another one of those tools that almost works. I never noticed it because to be honest, I hardly if ever chamfer anything. Fillet I use all the time. If they left chamfer off, I'd probably never notice.

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Using the chamfer command from the solid editing toolbar the only option is Distance. So I guess you have to do the math first to know the distances for the angle.

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