"We had a four-cavity aluminum disk mold, where the part was simple and the initial inspection was positive, but during the machining process, grooves were cut across the face of the casting and we were experiencing a high rate of porosity at the deepest machined sections. This caused an 80% rejection rate! We installed two "Valve-Less" vacuum blocks from Midland. One block serviced two cavities and with the help of technicians from Midland, a proper runner was engineered. They also advised us in the set-up and operation of the system. This improved our acceptance rate to over 95%."

Denny Schlager

Twin City Die Casting, Minneapolis, MN

"Using Midlands "Valve-Less" vacuum system in our magnesium plant has helped us improve the appearance of our highly cosmetic parts to our customer satisfactions."

Jeff Rivers

Product Technologies, Maple Lake, MN

"On a recent design and build program for General Motors, we were tasked to review different options to cost effectively evacuate the air and gasses from a series of new 6 speed transmission tools that AarKel Tool and Die, Inc. had been awarded. After an extensive benchmarking process to weigh the different venting and vacuum methods it was decided to utilize multiple chiller blocks per cavity that could be used to naturally vent to atmosphere or with an external vacuum system.

Numerous suppliers were evaluated for design, pricing and delivery and in the end Midland Technologies was the supplier of choice. Midland Technologies was a local, high quality and cost effective source that met all deliveries despite several design modifications to their standard stock Chiller Blocks.

After sampling all seven different tools, we are happy to report the Midland Technologies Chiller Blocks functioned as designed in either the venting or vacuum mode without issue and resulted in excellent casting quality."

Wes Palimaka

Lead Designer - Die Cast Division

AarKel Tool and Die, Inc., Wallaceburg, Ontario, Canada