CNC Mandalas

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Re: CNC Mandalas

by BMeyers » Thu Jun 13, 2024 5:29 pm

Mooselake wrote: Thu May 30, 2024 3:27 pm ... I've been running it through GCodeClean (md8n, github) for larger jobs. While it's an extra step it's worth checking out. Among other things GGodeClean converts line segments to G2/G3 arcs where possible, changes retracts to G0s, and does the same for plunges from safe height to almost the surface, and other fun stuff. The author is working on adding TSP travel move optimizations, they work but the interface to use them needs improvement. And of course test it first before doing anything important or on expensive stock
hat tip re gCodeClean

Re: CNC Mandalas

by ArtF » Fri May 31, 2024 8:31 pm

Always been my problem with that too, enclosed shapes. It'd be nice to have a button to make a grid
divided in 4 as 4 closed shapes unto themselves.. Mandala maker does that with an algorithm that uses graph
theory to separate things into closed shapes as I had the same trouble. Of course, it could be just me
not knowing how to do that...

Art

Re: CNC Mandalas

by Mooselake » Thu May 30, 2024 3:27 pm

I spent a lot of time offsetting and node editing while making chip carving designs from a beginner how-to book that was intended for pencils and actual chip carving knives. It would be nice if VCarve got the concept of enclosed spaces that aren't closed shapes. Estlcam kind of does but it's automatic shape finder still takes a lot of manual cleanup. For a simple example think a tic tac toe board, the center square is a fully enclosed shape, but not an SVG closed shape. I haven't gotten around to upgrading to V12 but haven't seen any indication that it's any different.

/probably OT/ To add to the fun Vectric's offset command gets carried away with making unnecessary new nodes, and their node simplifier (forget the actual name) changes shapes just enough that close ones can overlap, as an advantage that teaches you more about node editing :) . You don't want to look too close at VCarve's generated gcode after offsetting, it's ugly. I've been running it through GCodeClean (md8n, github) for larger jobs. While it's an extra step it's worth checking out. Among other things GGodeClean converts line segments to G2/G3 arcs where possible, changes retracts to G0s, and does the same for plunges from safe height to almost the surface, and other fun stuff. The author is working on adding TSP travel move optimizations, they work but the interface to use them needs improvement. And of course test it first before doing anything important or on expensive stock

Re: CNC Mandalas

by Mooselake » Thu May 30, 2024 3:27 pm

I spent a lot of time offsetting and node editing while making chip carving designs from a beginner how-to book that was intended for pencils and actual chip carving knives. It would be nice if VCarve got the concept of enclosed spaces that aren't closed shapes. Estlcam kind of does but it's automatic shape finder still takes a lot of manual cleanup. For a simple example think a tic tac toe board, the center square is a fully enclosed shape, but not an SVG closed shape. I haven't gotten around to upgrading to V12 but haven't seen any indication that it's any different.

Re: CNC Mandalas

by BMeyers » Thu May 30, 2024 3:10 pm

Look forward to that.
And, as usual thanks for your inventiveness and work.

Re: CNC Mandalas

by ArtF » Fri Apr 05, 2024 1:17 am

Kirk:

Yeah, that's usually the part people complain about when trying to find such drawings. CNC needs that edge not to be shared typically
so that all polygons are individuals by themselves. Im almost done to a point where I can put out a preliminary release, but for that the
output will be either G Code in multiple layers (one layer per file ), GCode of all layers to be cut as one layer ( for texturing ), and finally
a grey scale output photo for laser engraving in 3d. Ill do a video of all three items being cut as well.

Art

Re: CNC Mandalas

by BMeyers » Wed Apr 03, 2024 12:58 pm

ArtF wrote: Mon Mar 11, 2024 11:24 am Kirk:

All are closed paths, as well as being their own closed paths, I mean if they share an dedge, that edge is included in each polygon.

Art
helpful that aspect.

Re: CNC Mandalas

by ArtF » Sun Mar 17, 2024 4:05 pm

By Request, here are the first two tests on wood of the mandala output.
One is single level, the other multiple level, each took about 10- 20 seconds to burn.
simpleengrave1.jpg
simpleengrave2.jpg

Art

Re: CNC Mandalas

by ArtF » Wed Mar 13, 2024 7:43 pm

First trial cut of small autogen mandala.


Look better if my dirty fingers didnt cloud it up. :)

Art
mandada1.jpg

Re: CNC Mandalas

by ArtF » Mon Mar 11, 2024 4:43 pm

This code will be put in gearotic when its done.. :)

Art

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