[drew_burg]

Does anyone have a way to address this issue easily? In the past I have broke the edge into 2 lines roughly 1/2 the diameter of the cutter to keep the cutter off the edge but its many steps and very cumbersome.
Thanks!

[WILDMAN2]

We need more info. Do you mill out what you can first? then go in with the angle mill?

[drew_burg]

I apologize for being so vague. Im talking about the 0.01 chamfer around the outer perimeter of each feature. BobCAD has a chamfer strategy that works quite well like you see on the Z0 plane of the part I have pictured. At the lower Z plane the chamfer mill slams into the edge of the wall. Ive tried some simple thing like using a negative value for the parallel lead-in/lead out option and substatuting with a fake larger cutter but no success.

[MikeC8]

I've always created sketch profiles for chamfers like this on bobcad. But it is a pain, so I avoid it.

Recently I started to play with fusion 360, and last night I tried their 2d chamfer out. It was a chamfer that ran very close to the edge of a sidewall. And Fusion kept refusing to cut along the edge of the sidewall... I finally changed a setting, that set how close you would let the tool get to a edge, and it completed the chamfer. This is a great way to handle chamfers, maybe bobcad can do something similar?

[drew_burg]

Yes MikeC8 - That is basically what I am asking. I know Fusion would do offset to miss the wall and was (still am) hoping that there was a similar way in BobCAD to do that. The chamfering strategy works great except for this.

[WILDMAN2]

I have never had any trouble with a chamfering any part if I want to stay off the edge I just tell it to do so from the library. Wish I had your file so I could look at it fast.

[drew_burg]

See attached. Thanks

[The Engine Guy]

Try the attached, just use the extract edge utility before you chamfer the model and then just use the "Modify Entity" to change the start/end points and that is what you need to select for the chamfer, it`s quite quick once you get the idea

Sorry, that`s all I have

Obviously the smaller tool the closer to the wall you can get

[jrmach]

Try the attached, just use the extract edge utility before you chamfer the model and then just use the "Modify Entity" to change the start/end points and that is what you need to select for the chamfer, it`s quite quick once you get the idea

Sorry, that`s all I have

Obviously the smaller tool the closer to the wall you can get

still not seeing the problem ????????

[drew_burg]

Try the attached, just use the extract edge utility before you chamfer the model and then just use the "Modify Entity" to change the start/end points and that is what you need to select for the chamfer, it`s quite quick once you get the idea

Sorry, that`s all I have

Obviously the smaller tool the closer to the wall you can get

Yes that works quite well. Also - I changed to a new layer right before extracting the edge. Turning off the solid model layer made selecting the shortened line much easier.
Thanks for the help

[SBC Cycle]

I have never had any trouble with a chamfering any part if I want to stay off the edge I just tell it to do so from the library. Wish I had your file so I could look at it fast.

Which library are you referring to?

[SBC Cycle]

Does anyone have a way to address this issue easily? In the past I have broke the edge into 2 lines roughly 1/2 the diameter of the cutter to keep the cutter off the edge but its many steps and very cumbersome.
Thanks!

I have a strategy to cover this issue but it may not be much faster than what you are doing. I can detail it with an example file if you are interested but the gist of it:

I program the feature without regard for the cutter gouging the wall or corner. Once I have my "Depth" and "Cutter Position" tweaked (I don't really tweak them, I use the same settings/DMS 99% of the time) I know how far the centerline of the cutter is offset from the selected geometry (for a 45 deg chamfer it is simply "Cutter Position" + "Depth/Width" + 1/2 of small diameter of the tool). Figure your tool radius and subtract the value you just calculated from that.

This is your necessary offset to avoid walls and corners. I would use the "Offset" function on anything I wanted to avoid and use that geometry to clip the Chamfer geometry. It sounds complicated but it takes me about 1 minute to do both ends of an open ended chamfer. Screenshot attached but it's sort of backwards, I started at the bottom. Took me 3 minutes including finding an example file and putting together the screenshots.

Always looking for a better way myself so I hope the suggestions keep coming.