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by JoshM
Sun Feb 17, 2019 3:52 pm
Forum: Path/CAM
Topic: LibLathe - Lathe Path Generation
Replies: 23
Views: 1587

Re: Lathe Features

Hi Dan, Any progress on this? I noticed your post a bit ago, and have meant to touch base. In broad terms, lathe ops are easier than 4th axis milling, or 3d milling because the Job model is radial. But, the trade off is that the tool shapes no longer remain radial. My practical lathe experience is p...
by JoshM
Sun Feb 17, 2019 3:01 pm
Forum: Path/CAM
Topic: Creating CNC roughing and finishing passes
Replies: 98
Views: 4214

Re: Creating CNC roughing and finishing passes

Really nice job Russ! Thanks for sharing that.
by JoshM
Thu Jan 31, 2019 12:28 am
Forum: Path/CAM
Topic: Waterline milling update
Replies: 26
Views: 1469

Re: Waterline milling update

I still think we could get some short-term benefit by doing more with OpenCamLib. Using the the tessellated shape of the part and pushing a tool shape against it is exactly the approach employed. Hey Brad, It's always been an option. I couldn't get it to compile--or figure out how to drive it. I'm ...
by JoshM
Thu Jan 31, 2019 12:23 am
Forum: Path/CAM
Topic: Waterline milling update
Replies: 26
Views: 1469

Re: Waterline milling update

Hi Julian, Thank you so much for your response. I've been processing what you posted. I don't fully understand some, so wanted to respond: The path work bench is already too complicated for what it does. From an open-source standpoint, you don't need consensus, just implementation :D . You can take ...
by JoshM
Fri Jan 25, 2019 2:15 pm
Forum: Path/CAM
Topic: Waterline milling update
Replies: 26
Views: 1469

Re: Waterline milling update

Hi Kunda1, I've been following JulianTodd's posts, as he has mentioned he's successfully achieved 3d milling for commercial software in the past. I've been playing with mesh a bit since he mentioned it's a superior approach, and I've reached out to him by PM to see if there's any way I can be of hel...
by JoshM
Fri Jan 11, 2019 6:08 pm
Forum: Python scripting and macros
Topic: Help wanted for scripting an "epicycloid" for sketcher
Replies: 41
Views: 1063

Re: Help wanted for scripting an "epicycloid" for sketcher

My pleasure. I don't know enough about spline creation to get that working with better resolution. When looking at it, I did notice that the generated Spline was reducing the number of points created, creating larger line segments in the result. I tried it as a Spline interpolation which I thought w...
by JoshM
Fri Jan 11, 2019 5:17 pm
Forum: Python scripting and macros
Topic: Help wanted for scripting an "epicycloid" for sketcher
Replies: 41
Views: 1063

Re: Help wanted for scripting an "epicycloid" for sketcher

Hi Manuel, Sorry--I'm still learning as I go. I think this will give you a better approximation of what you want. The only real change is that I am making a polygon that goes through all the points generated. Here, increasing the number of calculated points increases the resolution and better approx...
by JoshM
Thu Jan 10, 2019 8:32 pm
Forum: Python scripting and macros
Topic: Help wanted for scripting an "epicycloid" for sketcher
Replies: 41
Views: 1063

Re: Help wanted for scripting an "epicycloid" for sketcher

I'm not sure if this helps any or not, but have you looked at scripting a BSpline through your points in Sketcher? The reason I say I'm unsure if there's merit in this is that I am not sure the reason the Spine curve was incorrect in the macro I posted on here, and this too is a Spine approach. You ...
by JoshM
Thu Jan 10, 2019 4:43 pm
Forum: Python scripting and macros
Topic: Help wanted for scripting an "epicycloid" for sketcher
Replies: 41
Views: 1063

Re: Help wanted for scripting an "epicycloid" for sketcher

Yes, fillet on fillet doesn't work. Similarly, in 3d shapes, draft cannot be done on a filleted shape. And, in Sketcher, there are some other limits. I think ChrisB's tutorial on Sketcher may clear up some of that for you. Not sure now what you need to do with implementing arc, but it should be poss...
by JoshM
Mon Jan 07, 2019 2:01 pm
Forum: Python scripting and macros
Topic: Help wanted for scripting an "epicycloid" for sketcher
Replies: 41
Views: 1063

Re: Help wanted for scripting an "epicycloid" for sketcher

You're very welcome Manuel. I used the wiki formulas from link you provided, but I folded in the constant calculation before iterating. I think the reason the fractional ratios do not work may be that the for loop steps are ints then divided for floats, but I'm not sure. I don't know about the Splin...

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