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A blog reader asked a great 2-part question regarding die setting… Jim During the installation of a mold, is it a good practice to build tonnage prior to applying torque to mold bolts, or energizing a magnetic platen? Is there anything wrong with torquing the bolts or energizing the magnetic platen before torquing the bolts? My Response […]

During a discussion with his fellow employees about screw tips, this blog reader was asked and forwarded this question to me… Tim We were discussing the different types of screw tips: sliding ring (check ring), poppet valve, ball valve and smear tip. I was asked, under what circumstances would you use each type and I […]

I often get asked about the interesting processing claims promoted by machine manufacturers. Tony One machine manufacturer is claiming they have a control system which reduces the pressure necessary to fill the mold ad therefore reduce the necessary clamp pressure. Is this correct? My Response If you are using a good stable molding process with […]

I received an interesting question from recent webinar attendee… Tony We currently have 18 machines, all from one manufacturer, but the local service agent is not providing good service. As a result, we will be looking at purchasing a different brand of machine. As a contract (custom) molder, we run a variety of materials and […]

After performing an In-Mold Rheology Test, one blog reader had this question… Jason When performing the in-mold rheology test, I noticed a sharp drop when reaching a specific shear rate. After this point, the viscosity stabilizes at the lower value for the remainder of the higher shear rates. What is the cause for this abnormal […]