demonstration of Sigmasoft at the K show, Kruse was impressed. "I was using a different software at the time, but I clearly identified what simulation software should provide. Sigmasoft was way beyond anything I'd ever seen," he states. "I had the pleasure of working with Sigmasoft for several years prior to their opening their own North American office. I have been using the Sigmasoft software ever since."

"Pretty awesome"
Rick Finnie, president of M.R. Mold & Engineering, remarks that the Sigmasoft molding analysis software is "pretty awesome," and does what it does "on a higher level than currently exists by using a 3D mesh."

Sigmasoft molding analysis software takes the model and breaks it into tiny elements and runs the mathematical calculations to determine a vast variety of processing results. "We've used it a few times and it's amazing what it can tell us," Finnie says.

Kruse notes that if the analyst doesn't know the materials and the Plastic molding process, "they can make lots of mistakes that lead to incorrect results, and this can leave a bad taste in the mouth of the client," he says. "The good analyst will create the simulation and point out to the customer what it takes to create a robust design both from a part design perspective and a mold design perspective."

Material flow software often gets a bad rap for a couple of reasons. First, notes Kruse, there's reluctance on the part of the moldmaker to share details, and secondly, there's also a reluctance of people to believe the results of the analysis.

"The analyst sometimes doesn't get all the information they need to do the best job he or she can," Kruse says. From Kruse's point of view, the analyst needs to be the best communicator he or she can be. They need to have the ability to ask for details from the client, getting all the information that they need to do the job. After they do the analysis, they must then go back to the client and convey all the details of the results, help the client to understand the limitations and the boundaries of the part, the mold and the material.

"We show them the how to interpret these results of the analysis," Kruse says. "There is no 100% correct solution. The analyst's job is to ask for the details, do a detailed analysis, and then provide a detailed explanation of the results, and explain carefully what the results mean. I see this every day - the approach of using simulation software is so misused in a lot of instances because the analyst doesn't get enough detail or doesn't ask for the details. It's all about the details. Details are the most important thing. If you take care of the details, everything else will fall into place."

Kruse notes that it is important to remember that material flow and plastic mold analysis software is "a tool to evaluate the part, the mold design and the process. If you don't know the process, you can't provide good analytical information or you might miss a point and recommend something that's not possible."

It's also extremely important that analysts cover all their bases and know machines, tooling and materials - the materials side of the simulation being the most important," stresses Kruse. "You need to understand materials in-depth because if you don't understand the material behavior you can't understand what should happen in the mold and what needs to be done to improve the process to make a quality part and a robust design. "If you don't have that clear vision, you set yourself up for failure. It's not just about knowing how to run the software; it's what you know about the machinery, the materials and the processing.

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