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phide · 05-26-2006, 01:41 PM

There are different varieties of acetal resins, so you need to be a little mindful when selecting one for your purposes. You can either get an acetal homopolymer (sold under the Du Point brand Delrin) or acetal copolymer (majority of which is made by BASF). There are also different grades, most of which you'll find are designed for injection molding. You obviously want machining grade acetal, which is ideally going to be lubricated.

Machining-grade Delrin homopolymer should be fine for your needs, but I'd probably go with a copolymer. It seems slightly more ideal for the demands of a water block, and you'll probably find that most copolymers are cheaper than Delrin.

Cathar may have actually used a copolymer and just called it Delrin so people would know what he was talking about.

05-26-2006, 01:41 PM	#23
phide Cooling Neophyte Join Date: Feb 2006 Location: Los Angeles, CA Posts: 41	Re: CNC milling machine at my disposal There are different varieties of acetal resins, so you need to be a little mindful when selecting one for your purposes. You can either get an acetal homopolymer (sold under the Du Point brand Delrin) or acetal copolymer (majority of which is made by BASF). There are also different grades, most of which you'll find are designed for injection molding. You obviously want machining grade acetal, which is ideally going to be lubricated. Machining-grade Delrin homopolymer should be fine for your needs, but I'd probably go with a copolymer. It seems slightly more ideal for the demands of a water block, and you'll probably find that most copolymers are cheaper than Delrin. Cathar may have actually used a copolymer and just called it Delrin so people would know what he was talking about.