Posts Tagged ‘ultem’

Tips for Customers and Engineers Who Want Vapor Polished Plastic Parts

Thursday, October 29th, 2009

Here is set of photos showing the progression of vapor polishing a plastic part.  The first shot is of the part before polishing.  The second is during vapor polishing.  We only polished half of it to show the difference in finish that vaporing can offer.  The final photo is of the part fully vapored.  Many potential customers ask about having us vapor parts that they machined.  Normally, we do the machining in house but we also offer vaporing as a service.  The thing about vapor polishing though, is that any surface imperfections can be magnified.  For example, if you give us a piece of machined acrylic, ultem, or polycarbonate that has heavy feed lines or chatter, the vaporing will bring out the poor finish.  The truth is, poor finish in = shiny poor finish out.  If your machining is fundamentally good and your surface finish is smooth, vapor polishing can brilliantly polish your plastic parts.  Engineers and Machinists should also know that overly aggressive machining can impart stress in the finished parts.  This can be problematic during the vapor polishing process because the parts may end up with crazing visible inside the material or on the surface.  Ultimately, we like to do our machining in-house so we can be sure the parts our customers receive will be as good as possible.  However, If your in-house machining work is strong, you will be very satisfied with East Coast Precision Manufacturing’s vapor polishing service.  Can’t wait to hear from you!

Polycarbonate Handle 01

Polycarbonate Handle 02

Polycarbonate Handle 03

East Coast Precision Manufacturing

Plastic Polishing

Secondary Plastic Machining

Ultem Machining at East Coast MFG

Monday, June 15th, 2009

This a sample of some turned Ultem we have been working on at East Coast Precision Manufacturing. Ultem is known for its resistance to chemicals, solvents, and heat. It is often used for instrumentation and reusable medical components. More information about Ultem.

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On this part, each end is bored to a very tightly toleranced TIR (total indicated runout). The outside diameter is nicely contoured as well.

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East Coast’s machining processes allow for thin walled parts like this to be manufactured very little stress. This makes for a more durable and longer lasting part.

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Some Machining Challenges

Turning Plastics

East Coast Precision Manufacturing

Customer Endorsements