Grant,
Yes, they have that same slippery feel like teflon. As you said with a thick
panel it probably will hold up OK in the sun. For wire antenna usage I would
probably be changing
the wire or feedline anyway long before the poly shows signs of failing. Its
salvation is the thickness then. It should be a breeze to cut up with my table
saw.
tnx
Bob
K6UJ
On Apr 21, 2012, at 9:06 PM, Grant Saviers wrote:
> Usually some form of high density polyethylene (HDPE) or a variety called
> UHMW - ultra high molecular weight which is quite slippery and used as an
> inexpensive substitute for TFE in sliding bearings, e.g. conveyer strips, low
> speed sleeve bearings, and part handling machines. UHMW is not fun to
> machine because it is so slippery and gummy.
>
> Both are not UV resistant, although it might take a while for thick panels to
> degrade sufficiently to be a problem. It's biggest advantage is it is cheap.
> Polyethylene is also a very good RF insulator if protected from exposure,
> but not very strong.
>
> Grant KZ1W
>
> On 4/21/2012 8:30 PM, Bob K6UJ wrote:
>> I brought this up in a post about dipole center supports and thought I would
>> ask the towertalk gang about this.
>>
>> I keep looking at those white cutting boards and wonder if they would work
>> for antenna stuff. Anyone know what type of plastic they are ?
>> The ones I have seen are about 1/2" thick and look like they are begging to
>> be used for antenna support projects. They are white and look and feel like
>> teflon, but I'm sure they are not, hihi.
>>
>> Bob
>> K6UJ
>>
>>
>>
>>
>> _______________________________________________
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