Traditional plastic processing methods such as injection molding and blow molding require high mold manufacturing costs. CNC machining is ideal for plastic prototype part verification or low-volume production. But CNC technology can only process plastics with a certain hardness, and it can’t do anything in the face of softer materials like silicone. Common CNC machined plastics are:
ABS:
Cheap and easy to process, good impact resistance, commonly found in electronic  product shells and car interiors.
Nylon (PA):
The performance of wear resistance and fatigue resistance is very good, with  self-lubricating characteristics, it can be processed into gears and bearings and other  
Polycarbonate (PC):
transparent and resistant to high temperatures below 120 degrees, can make transparent protective covers, optical lenses.
POM(Delrin):
High strength, high density, low surface friction coefficient, suitable for the production of precision parts such as gears.
PEEK: High-temperature resistance of 260 ℃, chemical corrosion resistance, better strength  than POM, tensile strength can reach more than 90MPa.
HDPE:
Food grade material, soft texture.
PTFE:
Resistant to 260 ℃ Celsius, non-stick and insulating, it is commonly used in a variety of coatings, such as pans and jackets.
Because of the characteristics of plastics, it is necessary to pay attention to controlling the cutting temperature to prevent melting during the cutting process; Use sharp knives to avoid edge burrs; Increase the rotational speed and reduce the depth of cut to prevent material deformation.
