SigmaNEST x1.6 Nesting Efficiency Question

[Vtt123]

Running sigma 1.6, no plugins.

My head engineer and I are playing with sigmaNEST trying to adjust our sheet efficiency. We are having trouble understanding how Sigma is deciding the size of the sheet. For example, we are trying to nest something on a single 5x10 and sigma doesn't seem to view this as efficient, it generally puts it on one 4x10 and three very small parts on a 3x10. I should also mention we only have three sheet sizes per gauge and those are 3x10,4x10,5x10.We have adjusted settings but are having trouble getting the result we desire. We both agree it has something to do with either waste calculation or some form of yield efficiency. However the user manuals do not seem to have anything to adjust other than: Number of Tries, Strategy, and Lookahead Factor. There are a few other smaller options but our adjustments to those options haven't yielded any positive results. If anyone has any idea of a possible change we could make or maybe could help with further information it would be much appreciated. Sigma's help hotline hasn't been able to help much either, this is a pretty big shot in the dark here. Any insight at all would be greatly appreciated.

 

[hendersdc]

I have not used that particular software but I have used other nesting software in the past. Is it possible that it is keeping track of stock on hand and you are showing no availability or insufficient availability for 5x10?

 

[Vtt123]

Thanks for the response! We have our stocks set at some ludicrous number for all sheets we have imported. So unfortunately, that isn't the issue. It has something to do with the way SigmaNEST interprets the waste and we've come to the conclusion we just have to work with Sigma and over time hopefully develop a way to nest how we would like it. Any other possible answers will be helpful but I think this is just an innate problem, possibly specific to our style of work. We are hoping we can work with their engineers and fix the problem over the coming year. TY again for the suggestion.

 

[3DDave]

Are you manually able to get better nesting than SigmaNEST does? I'm more confused by a value judgement based on "like" for how nesting is done rather than a quantifiable evaluation.