Thermoforming can be done by vacuum, pressure, and/ or direct mechanical force. The process offers close tolerances, tight specifications, and sharp detail. With the proper finishing techniques, thermoformed parts can be comparable to injection molded pieces in quality, while costing much less.
Thermoforming mold must be temperature controlled with internal cooling channels to allow for consistent mold temperature. Aluminum is the material of choice because it has very high coefficient of thermal conductivity that allows consistent cooling cycle times through the entire production run of components.
The heaters that are needed are turned on . The top piece is a heater that needs to be rolled over the part to be molded when in use.
The heater has many knobs that are turned to activate the heaters that a diagram shows.
If the material is 0.2" thick or more, start with a full or 6 setting on the knobs you are using.
The buck is put in the machine in a way that lets air suck around the edges
If big the machine has stand-off bumps that hold it up
If small the buck might need to be supported by a many holed base
The buck is lowered with a handle to where it won’t get overheated while the plastic is being heated
Open the plastic clamping area with the funky clamps left and right
A set of plates are often in this area. Then take them out carefully.
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