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by JoshM
Wed Jun 05, 2019 10:14 pm
Forum: Path/CAM
Topic: Waterline milling update
Replies: 39
Views: 2917

Re: Waterline milling update

At least Python is a relatively accessible language. Until I started playing with it, I had only programmed 8-bit microcontrollers in assembly language and a C-class 25+ years ago. What was worse was for me was my math skills had been largely unused over that time frame too... While no expert, I fee...
by JoshM
Wed Jun 05, 2019 8:58 pm
Forum: Path/CAM
Topic: Waterline milling update
Replies: 39
Views: 2917

Re: Waterline milling update

Josh, I'd like to give a go to your approach for waterline milling. I've copied the macro you kindly provided, should I just try to use it as is? Thanks, j. Hi RatonLaveur, You're most welcome to try to make progress, and I wish you every success. I've become very busy with work and don't have much...
by JoshM
Fri May 17, 2019 12:28 am
Forum: Path/CAM
Topic: Waterline milling update
Replies: 39
Views: 2917

Re: Waterline milling update

As for Water-Lining, it's not significantly different. Here goes: Above, I defined an X-axis/Y-axis tool path, and calculated for each facet edge if there was any interference with that pre-determined tool path. I then adjusted the minimum allowable z value for the bounds of each interference line. ...
by JoshM
Thu May 16, 2019 11:06 pm
Forum: Path/CAM
Topic: Waterline milling update
Replies: 39
Views: 2917

Re: Waterline milling update

Here's an example of what I've been working toward. Until now I've been printing out vectors and spot checking to try to get the basic algorithm working. I trapped most of the issues and now have drawn out the results for some tool path segments. I implemented it poorly, and instead of adding all li...
by JoshM
Fri May 10, 2019 12:46 pm
Forum: Path/CAM
Topic: Waterline milling update
Replies: 39
Views: 2917

Re: Waterline milling update

Amazing stuff going on with Path these days, and in large part due to collaborations Russ has led. Bravo on getting things done. My focus lately has been on facet sampling mesh in a non-linear way, and I struggled for a while trying to reconcile the vector math to get the algo correct. A couple of d...
by JoshM
Thu May 02, 2019 7:47 pm
Forum: Path/CAM
Topic: 3D Surface: 4th-axis Integration and more...
Replies: 69
Views: 3197

Re: 3D Surface: 4th-axis Integration and more...

I've continued work on an alternative mesh sampling approach. I've been attempting to implement a non-linear sampling algorithm. The concept is relatively simple, the execution requires care. For a moderately large mesh--around 3k facets, 6k facet edges--it is possible to analyze the relationship of...
by JoshM
Sat Mar 30, 2019 6:21 pm
Forum: Path/CAM
Topic: CNC Lathe and 4th-axis milling...
Replies: 142
Views: 10953

Re: CNC Lathe and 4th-axis milling...

There’s a compromise that I’ve been playing with that likely speeds up path calculation. Linear sampling isn’t ideal for a mesh. If I create a plane from Stocktop to bottom along each zig-zag segment, then iterate through all facets in the mesh, I can use vectors to calculate the distance from each ...
by JoshM
Mon Mar 25, 2019 12:31 pm
Forum: Path/CAM
Topic: CNC Lathe and 4th-axis milling...
Replies: 142
Views: 10953

Re: CNC Lathe and 4th-axis milling...

The primary reasons for specifying step-over are to: -Ensure that the tool is not subject to excess torque. -Ensure that the model is cut with adequate resolution. Since the step-over is "true" at the surface of the model, you are meeting the needs of the 2nd reason. Since you know the arc length, i...
by JoshM
Thu Mar 14, 2019 6:16 pm
Forum: Path/CAM
Topic: CNC Lathe and 4th-axis milling...
Replies: 142
Views: 10953

Re: CNC Lathe and 4th-axis milling...

Due to my lack of knowledge and expertise in this area of CNC milling and lathe processes, I am reaching out to you. I noticed that the existing FC tool controller[TC] has some fields for some tools that are extraneous to the tool, as I understand the tools. I Hi Russ, I'm no expert, but I also not...
by JoshM
Sun Mar 10, 2019 8:29 pm
Forum: Path/CAM
Topic: CNC Lathe and 4th-axis milling...
Replies: 142
Views: 10953

Re: CNC Lathe and 4th-axis milling...

Hi Russ, Great work--really appreciate what you're up to! I'm trying to take a look at your script now. I haven't gotten 4th axis, but I'm amazed at what's been done so far with harnessing OCL to fit into PathWB better. If I recall correctly, AWallin had built in various tool-tip types--end, ball, c...

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