The best way to achieve great tolerance results is to use the new Noztek Tolerance Puller. Drying your resin before use is also very important if you wish to achieve tight filament tolerances. We sell resin dehydrators for professional results. With the Noztek Pro extruder range, you can control the filament diameter by adjusting the temperature settings. The general rule is that the higher the temperature, the thinner the filament. Noztek Touch extruders have the option of speed control and the dual PID facility allows users to independently control the temperature of both the preheater and main heater bands. Both of these features have an effect on filament tolerance.