Author Topic: Material Efficiency Nesting  (Read 2422 times)

Online Bob La Londe

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Material Efficiency Nesting
« on: November 08, 2019, 18:25:26 pm »
Sheet or stock nesting for efficient use of material.
Getting started on CNC?  In or passing through my area?
If I have the time I'll be glad to show you a little in my shop. 

Some Stuff I Make with CamBam
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Offline lloydsp

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Re: Material Efficiency Nesting
« Reply #1 on: November 08, 2019, 19:49:56 pm »
Yeah... that is a chore to do by hand on anything but rectangular designs.

Lloyd
"Pyro for Fun and Profit for More Than Fifty Years"

Online Bob La Londe

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Re: Material Efficiency Nesting
« Reply #2 on: November 08, 2019, 21:26:37 pm »
Yeah... that is a chore to do by hand on anything but rectangular designs.

Lloyd

Yeah, I was thinking about knocking out a few dozen Kant Twist (tm) style clamps, and then I started thinking about material usage.
Getting started on CNC?  In or passing through my area?
If I have the time I'll be glad to show you a little in my shop. 

Some Stuff I Make with CamBam
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Offline dh42

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Re: Material Efficiency Nesting
« Reply #3 on: November 08, 2019, 22:20:39 pm »
Hello Bob

Did you tried DeepNest ?  Works fine !

https://deepnest.io/

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David
« Last Edit: November 08, 2019, 23:01:53 pm by dh42 »

Offline dh42

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Re: Material Efficiency Nesting
« Reply #4 on: November 09, 2019, 00:51:56 am »
Re

I just add a new page with a video to use DeepNest (EN, FR)

http://www.atelier-des-fougeres.fr/Cambam/Aide_V1/Video/Nesting_avec_DeepNest.html

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David

Offline Bubba

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Re: Material Efficiency Nesting
« Reply #5 on: November 09, 2019, 01:25:32 am »
I like. Thanks for the video David.
My 2¢

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Online Bob La Londe

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Re: Material Efficiency Nesting
« Reply #6 on: November 09, 2019, 01:51:10 am »
Hello Bob

Did you tried DeepNest ?  Works fine !

https://deepnest.io/

++
David

I'll watch your video, but when I tired it sometime ago it didn't work at all for me.  Total waste of computer time. 

Maybe I just didn't know how to use it.  I checked and its still installed on my computer. 
Getting started on CNC?  In or passing through my area?
If I have the time I'll be glad to show you a little in my shop. 

Some Stuff I Make with CamBam
http://www.CNCMOLDS.com

Offline dh42

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Re: Material Efficiency Nesting
« Reply #7 on: November 09, 2019, 02:05:53 am »
Re

Note that if you want to nest on more than one sheet, you can set the number of object used as sheets or you can use more than one rectangular shape with different sizes

I just add a second video on the page to show multi sheets.

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David


Offline dh42

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Re: Material Efficiency Nesting
« Reply #8 on: November 09, 2019, 02:33:13 am »
Quote
I'll watch your video, but when I tired it sometime ago it didn't work at all for me.  Total waste of computer time.  

Maybe because the CB version used to export the DXF ; the last time I tried DeepNest, before to export to DXF, the file needs a lot of tweeking to works with DeepNest (exploding all shapes to obtain only arcs and lines, exploding regions, converting spline to polylines + explode polylines, etc .... with CB V1.0 R16)

Now with the latest CB V1.0 (RC3 in my case) this is no longer needed ; I assume that Andy make some changes in DXF export since, and it is the reason why it works well now (I use the same 1.05 version of DeepNest than with my previous tests)

Sometime, open shape can cause bad results as on this picture, in white, the original shapes, in green the nested shapes ; some opened lines are bad in the hatch.



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David
« Last Edit: November 09, 2019, 02:44:36 am by dh42 »

Offline Mark81

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Re: Material Efficiency Nesting
« Reply #9 on: November 09, 2019, 18:15:02 pm »
I'm very curious to try this software because I often have to optimize cutting when machining puzzles, for example.
With some basic designs I can run it with no issues, but with real jobs it says "error: unsupported format" (tried also with rc3). The offending dxf is composed of polylines only, and one polyrectangle for the sheet boundary.

I'm not sure if I can upload it here because I bought it. Any idea how to understand what it doesn't like?

Offline dh42

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Re: Material Efficiency Nesting
« Reply #10 on: November 09, 2019, 20:56:14 pm »
Hello

It is a work of patience to find what polyline is a problem, probably a polyline defective ... impossible to say without the file.

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Offline Dragonfly

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Re: Material Efficiency Nesting
« Reply #11 on: November 09, 2019, 21:04:15 pm »
I'm very curious to try this software because I often have to optimize cutting when machining puzzles, for example.
With some basic designs I can run it with no issues, but with real jobs it says "error: unsupported format" (tried also with rc3). The offending dxf is composed of polylines only, and one polyrectangle for the sheet boundary.

I'm not sure if I can upload it here because I bought it. Any idea how to understand what it doesn't like?
Probably the .dxf is too new version for CB to read. I always export/save to Autocad R13 format.

Offline dh42

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Re: Material Efficiency Nesting
« Reply #12 on: November 09, 2019, 21:48:52 pm »
Quote
Probably the .dxf is too new version for CB to read. I always export/save to Autocad R13 format.

I think it's DeepNest that complain, not CamBam (If I well understand ?)

++
David

Offline Mark81

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Re: Material Efficiency Nesting
« Reply #13 on: November 10, 2019, 09:11:57 am »
I think it's DeepNest that complain, not CamBam (If I well understand ?)

Correct.
The only way I found is a "bubble-debug" (tm)  ;D

1. remove half of the polylines and try to import in DeepNest
2. if it still doesn't work go back to point 1
3. if it works, swap the two halves and go back to point 1

Anyway, it seems the software (DeepNest) might have a big potential but it's a bit... rough.
« Last Edit: November 10, 2019, 09:14:08 am by Mark81 »

Offline Bubba

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Re: Material Efficiency Nesting
« Reply #14 on: November 10, 2019, 14:30:19 pm »
Used this program yesterday, must say it did a wonderful job. Again, thank you David for the videos.
« Last Edit: November 11, 2019, 00:33:51 am by Bubba »
My 2¢

Win 10 64 bit, CB [1.0} rc 1 64 bit, Mach3, ESS, G540