Paste dispensing or dosing in photovoltaic PV – is it worth to use an automatic dosing equipment ?

During photovoltaic cell production, screen printers apply different types of paste, either silver Ag or aluminum Al or aluminum-silver AlAg.   These pastes need to be dosed or dispensed in a proper way into the screen printing machines. Many times this is done by hand. Beside this there are good dosing systems for the paste, such as from ViscoTec. But is it worth using a full-automatic dosing equipment?   Using dispensing equipment for the paste saves labor cost. But this is not the big deal.  

Consider a 4 Euro cell, where only 20% of the cost is the paste.   Lets suggest with the dosing equipment you save 0,5% of paste and reduce the failure rate by 0,2% (the paste is much more homogeneous with a ViscoTec dispenser type ViscoTreat).  

A line with 1200 cell per hour, running 700 hour per month, has an output of 840.000 cells per month. So the monthly savings of paste is about 3.360 Euro. Further, you can sell for 6.720 Euro more cells because of the better quality. Your total savings can be 10.000 Euro/ month.   I am wondering if you agree with my figures? I would be happy to get your feedback at georg.senftl*Viscotec.de (please use the @ instead of the *)  Georg Senftl