Rentapen’s Team


We are all growing and learning together at Rentapen.  Constantly improving ourselves and our processes.


Paul Kruschke


Greg Leas

Chief Engineer

Chris Doll

Chris has been designing tooling at Rentapen for many years. He concepts the machine tool designs, and trains and guides the interns and CAD Drafters. He is the master of our Pro/E and CREO mapkeys (short cuts). He holds a Masters in Engineering from UW Milwaukee

Design Engineer

Dillon Kolinski

Dillon uses ProE and Solidworks to design Weld Fixtures.

IT Programmer / Analyst

Steve Guttormsen

Steve is in charge of Information Technology and Web Development. He also helps create custom drawings for RAPid Shims and shim packs from customer specifications and oversees the smooth running of all our computer programs and systems.

Administrative Specialist / Manufacturing coordinator

Mike Zachowski

Inez is responsible for: Bookkeeper, Quoting, and Human Resource functions

CNC Programmer

Kevin Zimmer

Kevin uses FeatureCam to program Rentapen’s custom parts

Laser Operator & Machinist

John Dinon

Operates CNC Machine in order to create Rentapen’s RAPid Blocks, Plates, and Risers.
John also operates and maintains our laser.


John Panepinto

John operates CNC Machines in order to create Rentapen’s custom and standard parts

Laser Operator

Raymond Cashaw

Raymond operates laser in order to create Rentapen’s standard and custom shims.
custom and standard parts


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