Typical Thermoforming Tolerances
Pressure Forming
Outside Part Dimensional
Flat Plane: +/- .030"
Vertical Plane: +/- .030"
Centerline
When established: +/- .015"
Hole Center
Mold edge to hole center: +/- .015"
Hole to Hole: +/- .010"
Slots
backformed in tool: +/- .015"
CNC Machine Routed: +/- .010"
Vacuum Forming
Mold Surfaces
On all surfaces Mold/Formed: +/- .030"
Centerline
Hole center/cutout: +/- .020"
Material
Material thickness stated is the starting gauge and will vary due to supplier specifications and forming techniques. Part surfaces opposite the mold surface cannot be accurately controlled. Material thinning due to forming may cause surface to vary by +/-.030"