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by JoshM
Thu Jan 31, 2019 12:28 am
Forum: Path/CAM
Topic: Waterline milling update
Replies: 39
Views: 2914

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: 39
Views: 2914

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: 39
Views: 2914

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: 1338

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: 1338

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: 1338

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: 1338

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: 1338

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...
by JoshM
Sat Jan 05, 2019 11:22 pm
Forum: Python scripting and macros
Topic: Help wanted for scripting an "epicycloid" for sketcher
Replies: 41
Views: 1338

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

Oh--that's cool. I tried it out and this should get you going. I tried it with R = 3, 5, and 15, and from wiki link, it looks correct. Epicycloid_Macro.png Epicycloid_Macro2.png Epicycloid_Macro3.png import FreeCAD from FreeCAD import Gui from FreeCAD import Base from FreeCAD import Vector import Pa...
by JoshM
Fri Jan 04, 2019 1:03 am
Forum: Path/CAM
Topic: Waterline milling update
Replies: 39
Views: 2914

Re: Waterline milling update

I've cleaned this up quite a bit, and it's much easier to try out now. I figured out how to make the BSpline shape without drawing to screen. It really didn't change time much. I have been generous with recomputes.

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