Acetal Sheet stock, perhaps the best of the engineering plastics used within the auto industry because of its long term dimensional stability and toughness. It offers solutions for designers to help them produce long lasting and very durable components. Another popular area for Acetal Sheet is in marine applications. This environment suits acetal well because its low moisture absorption will result in components that will not expand or alter dimensions due to contact with water. Dupont Delrin is the best plastic for turning on a lathe lathe. It is easy to turn, although it does require reduced speeds. I use this material to make Scottish small pipes chanters. I have bought countless items from iPlastic. The smaller pieces always ship promptly and everything has been well packed. I have never had a problem with an order. Between the Delrin and Acetal rods, both materials are exceptionally durable and easily machinable, and they have very similar Acetal Copolymer physical properties. They appear similar, but for practical use there are a few differences that may make one better than the other. It also depends heavily on your application. As with all plastic materials, be sure to check the typical properties data sheet for the desired properties you may require for your application.
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