Trimloss last updated

17th January 2018

by Julie Moorcroft

Moorcroft Computer Services

Thinking clear       Thinking software

Thinking Trimloss


by Julie Moorcroft

Moorcroft Computer Services


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Alternate Stock Size Feature



In the UK market, a batch of orders for optimisation will usually contain a unique mixture of sizes and quantities.  Everything is made to bespoke orders and there are rarely standard sizes which can be used to pad out an optimisation batch so that a predictable number of stock sheets will be used without significant off cuts.  





Because of the uniqueness of the optimisation batches, the amount of glass remaining after the last full optimised stock sheet is unpredictable.  Rather than use a full stock sheet which may produce a very large off cut, Trimloss can be told that when the waste goes over a certain percentage, then one or more alternate stock sizes are to be tried.  Often, there is only one of these alternate stock sizes, which can be a one third split of the full stock size.  This means that the largest off cut that can be generated is now quite small.  This alternate stock size feature, is just one more utilisation of mathematical decision theory in Trimloss.  




When putting an unused third split of a full stock sheet back into stock, or when putting an off cut smaller than this back into stock, extreme care should be taken when the glass is any type of Low E.  As soon as a Low E glass coated surface is exposed to the air, its quality starts deteriorating rapidly.  It does this even quicker in cold and damp weather conditions.  The precise rate of deterioration varies with the individual Low E glass types, but as a general rule, we recommend that if you want to maintain high product quality, then any exposed Low E stock left over at the end of the day should be discarded.  This is not a problem with Trimloss, because it keeps these off cuts are kept to an absolute minimum.  Other optimisation software however, may not be so diligent in minimising the area of such off cuts returned to stock, especially if their off cut management is limited only to those spanning the full height of the original stock sheet and wasting any smaller off cuts.  






Many optimisers designed by academics with no glass production experience whatsoever, do not even have the ability to optimise from more than one stock size in any one optimisation batch.  Anyone defending this serious software design weakness, is simply not living in the real world.