We operate several different machines with custom specifications. This allows us to have a wide variety of tolerances for your thermoformed part. Your design should follow these guidelines:
Dimensions must be drawn to and from controlled surfaces.
The controlled surface on a molded part is the surface against the Mold.
Call out for Mold Relief ( + draft or - draft angle from datum) ...2º typical.
Variance in thickness of Stock Material is typically ...± 10% from sheet vendor.
Material stretch is dependant upon Mold configuration.
CNC Trimmed Features:
Machined features from a formed surface ± .030"
"Cut to cut" ± .020"
Hole Diameter ± .010" < 2"
We work with several different types of plastic and plastic resins in thermoforming and vacuum forming. Here is a list of plastics that we work with frequently. If you don't see your plastic on the list, give us a call, we probably have experience with it.