SigmaPro Engineering

Ultra-Precise Injection Molded Parts and Mechanical Assemblies

Core Services


Injection molding: very small, very precise parts

Unique injection molds and part processing

Coatings, joining, de-flashing and assembly

Logistics, supply chain, project management

Measuring stereo microscopes, SPC process control

Insert molding, hand loading, very precise

Creative design solutions in plastic and metal


Call us at 
817-337-2708


Case Snapshot 3



One customer needed a tray to warm organic specimens while presenting them to an automated microscopic inspection system. This tray needed to be molded, but have a thermal conductivity near that of aluminum! Also, the specimens had to be kept in the field of view to within 10 microns (4 ten-thousandths of an inch).

This required a uniquely-designed mold that held this tolerance on two features over the entire 4-inch length of the part. One of the greatest benefits for our customer was our approach, which got them through the prototyping stage economically, as well as provided plenty of parts for early manufacturing, testing and sales.

Case 1 | Case 2 | Case 3 | Case 4