[Amps] Some Advice Needed

[Ron Trepka]

We have parts here that are made from Teflon as well as Teflon Powders
and suspensions of Teflon in water? with a surfactant to keep it in
suspension.
Teflon flows at about 575 F so I was always wondering if anyone had ever
tried to use junk Teflon to cast a part.
---
Ron



On Mon, 2003-03-17 at 10:11, Mike Switzer wrote:
> I have decided to go with my original plan and build with 3CX1200 tubes.  I am going to use the Z7 version per advice from several of you experts.  I have most of the mechanical problems solved (ya sure) with the exception of cooling this thing.  I searched my local Amp builder supply company (Home Depot) and found a very likely candidate for a chimney.  The adaptor used to connect a toilet to the waste pipe is almost the correct size and shape.  It of course is made of PVC(?) and would not withstand the heat(?).  I have a friend that works in the heat treat industry and he offered to attempt to find a solution.  I gave him a dead tube and the adaptor with the instructions to find someone that would machine this from Teflon.  He did find a willing person but in order to get the Teflon in the correct size it would require a 1500 dollar min purchase from the Teflon supplier.  This person suggested Phenolic(sp) as an alternative which could be purchased for under 200 dollars.
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> Could you gentleman give me some input as to which material I can use please?  I have no information on the material he is referring to as Phenolic.  But he claims it to be very heat resistant and non conductive.  I am sure he is talking about 60 cycle AC and not RF. So how about some suggestions?  This is a wonderful opportunity for someone to tell me where to go.  
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> By the way I ordered Dahl plate and filament transformers (potted no less) and when the locals pull out the pictures of grand kids I whip out my pics of the xformers!!!
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> Mike
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> k8ze
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