Choice of plastic for milling & threading ..

Mar 27, 2007 12 Replies
O

Hi All



I have to make a holder for a prototype piece of kit, my choice of material is a plastic as it needs to be RF transparent. I need to be able to turn, mill, bore & thread it without great difficulty. The material properties needs good UV resistance as the item will be used outside, being located in Australia makes cold temperatures less of an issue.



Will probably have to souce from RS or similiar.



Any suggestions as to a material ? Nylon - Tufnol etc ??



Thanks for any input.



Paul



PS - blank will be a large diameter rod, around 100 mm dia.



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D

I use Delrin, readily available from plastics outlets in Brisbane. Easy to saw, drill, tap, bore & turn. I've bought it in both black & white.

RS are way too expensive for most things, I find.

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N

The easiest to work with is POM (most know brand name: Delrin).

Nick

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A

I don't think that the Australians think POM's are easiest to work with

AWEM

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T

Maybe - but I suspect they would enjoy cutting threads on some

Regards, Tony

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N

But would they like to screw them?

Nick

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A

Teutonic humour must be improving

AWEM

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J

Take no chances, anyone who drinks that XXXX stuff is not choosey!

Keith

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J

They only call it XXXX because they can't spell beer.

.

-- Regards,

John Stevenson Nottingham, England.

Visit the new Model Engineering adverts page at:-

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T

How can you tell?

Regards, Tony

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A

'cos he understood it was a joke !

Vee haf vays of making you laff

AWEM

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O

at:-

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That is'nt beer, that's second hand stuff that's been through someone's kidneys and only fit for export, the locals don't drink that rubbish ...

So, looks like Delrin is the stuff to use. Thanks to all who replied.

Paul

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D

at:-

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Not sure whereabouts you are Paul, but if in Brisbane, try Foremost Plastics in Bulimba. If it's not in stock they can get it quick, and have offcuts available too.

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