Nesting unable to fit all pieces

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Nube
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Location: Modena, Italy

Nesting unable to fit all pieces

Post by Nube » Wed Jun 16, 2021 12:15 pm

I recently use the nesting function but it could not be able to fit all pieces.

I enclose the source drawing and the solution drawing I found without nesting function.

Am I doing something wrong?

https://qcad.org/rsforum/download/file. ... w&id=10130

https://qcad.org/rsforum/download/file. ... w&id=10130
Attachments
Nesting solution.dxf
(29.61 KiB) Downloaded 431 times
Nesting source.dxf
(31.13 KiB) Downloaded 331 times

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andrew
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Re: Nesting unable to fit all pieces

Post by andrew » Wed Jun 16, 2021 12:19 pm

Please understand that the nesting algorithm is not a puzzle-solver. It simply tries to guess how pieces might fit best. It is absolutely possible that you might find a better solution by manually placing pieces. If you spend enough time doing so, that's even very likely.

Nesting is mainly useful in cases where finding a solution manually is not feasible (e.g. large number of small irregular pieces).

CVH
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Re: Nesting unable to fit all pieces

Post by CVH » Wed Jun 16, 2021 1:39 pm

Hi,
From what I can see ... and have to deduct from that. :wink:
Sheet = 3000x1000 (the largest open contour)
16 pieces to nest.
All 16 are fitted on the sheet. :P

Regards,
CVH

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Nube
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Location: Modena, Italy

Re: Nesting unable to fit all pieces

Post by Nube » Wed Jun 16, 2021 5:26 pm

andrew wrote:
Wed Jun 16, 2021 12:19 pm
Please understand that the nesting algorithm is not a puzzle-solver. It simply tries to guess how pieces might fit best. It is absolutely possible that you might find a better solution by manually placing pieces. If you spend enough time doing so, that's even very likely.

Nesting is mainly useful in cases where finding a solution manually is not feasible (e.g. large number of small irregular pieces).
ok, i have no experience on that, now is more clear

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Nube
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Location: Modena, Italy

Re: Nesting unable to fit all pieces

Post by Nube » Wed Jun 16, 2021 5:28 pm

CVH wrote:
Wed Jun 16, 2021 1:39 pm
Hi,
From what I can see ... and have to deduct from that. :wink:
Sheet = 3000x1000 (the largest open contour)
16 pieces to nest.
All 16 are fitted on the sheet. :P

Regards,
CVH
You mean that you could fit them using the nesting function?

CVH
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Posts: 3416
Joined: Wed Sep 27, 2017 4:17 pm

Re: Nesting unable to fit all pieces

Post by CVH » Wed Jun 16, 2021 6:33 pm

Nube wrote:
Wed Jun 16, 2021 5:28 pm
From what I can see ...
From what I can see in your two files:
- Nesting source.dxf (before)
- Nesting solution.dxf (after)
QCAD nested all 16 shapes on the larger sheet.

Seems to me that all was OK to begin with.

Regards,
CVH

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Nube
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Posts: 11
Joined: Wed Nov 04, 2020 6:51 pm
Location: Modena, Italy

Re: Nesting unable to fit all pieces

Post by Nube » Thu Jun 17, 2021 12:57 pm

This means I made some mistake using the nesting function.

But I was lucky I could solve it manually otherwise I needed another slab 3000x1000 of Laminam porcelain gres.

The drawing was not complete, there were 3 rectangulare holes missing, necessary for other 4 pieces (the pieces were 20 really), because i was not sure how this could behaive with nesting function, anyway here is the final result:

IMG_20210617_084129_098.jpg
IMG_20210617_084129_098.jpg (2.62 MiB) Viewed 6470 times
IMG_20210617_084124_888.jpg
IMG_20210617_084124_888.jpg (3.31 MiB) Viewed 6470 times
IMG_20210617_084057_499.jpg
IMG_20210617_084057_499.jpg (3.35 MiB) Viewed 6470 times
IMG_20210617_084045_125.jpg
IMG_20210617_084045_125.jpg (3.33 MiB) Viewed 6470 times

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