616.368.2684 chris@bluebilles.com

Can I Find Sink Marks?

The Problem “What is a sink mark?”  “Where will the sink marks be?” Sink marks on plastic parts are in indentation in the surface, caused by the plastic shrinking and “pulling” the surface inward.  Visually this causes a “low spot” or “depression” or “valley” in a...

Air Traps-How Do I Find Them?

The Problem “Am I going to get trapped air in the mold?”  “Where will the air traps be?” “Air traps” are areas in the mold where air cannot escape during the molding process.  Since the mold halves are designed one for one, meaning the mold halves touch, the air that...

Weld Lines and Meld Lines-Can I Find Them?

The Problem “Where will the weld lines be?”  “What is a meld line?” “Weld lines” is term that is used when two plastic flow fronts come together.  Typically, this happens around screw bosses, differential thicknesses in part geometry and multiple gate locations in a...

When Failure Is Not An Option

When Failure Is Not An Option Have you had to rework a new plastic injection mold lately? If you have you know how frustrating the loss of time and resources are. For your next mold, take the guesswork out with some help from BlueBill Engineering Services. Read the...

Reducing Costs Using Simulation

    Using simulation can significantly reduce overall costs to launch a new injection molded product.  It allows you to see the issues BEFORE the mold is created.  Some of those issues could be short shots, filling pressure, how many gates are needed, and...

SOLIDWORKS and UMass Lowell

Lighter parts. Less scrap. More affordable materials. Greater design flexibility. These are some of the reasons why manufacturers are increasingly using plastics materials for new products and why the use of injection-molding manufacturing processes has expanded every...