Laser cutting: Acetal, (Delrin, Celcon etc.) Cuts cleanly in thin gauges, engraves nicely, and One of the major applications - medical devices. Acetal is also used for fabricating notary seal embossing plates.

Advantages of use of acetal based plastics

• they are chemically resistant
• they have a very low water absorption
• resistant to hydrolysis by base

Disadvantages of use of acetal based plastics

• low impact strength
• low melting temperature
• more rigid than nylons

Delrin is the brand name for an acetal resin engineering plastic invented and sold by DuPont.