[TowerTalk] aircraft bearing

[Jim Lux]

At 01:41 PM 7/30/2005, W0UN -- John Brosnahan wrote:
>Nothing beats a chunk of UHMW for a bearing.   Been running them
>for MANY years and I know that W7RM used them long before I did.
>
>A one inch thick block has been holding an 8L 15M Yagi in the CO winds
>for better than a decade.  And another one has been holding a 6L 20M KLM.
>No rust, no lubrication, easy to make using a table saw and a hole saw.
>
>With just a bit more effort you can support both the horizontal load and
>the vertical load.  Maybe I should start making them to sell.
>
>73--John  W0UN

And, for the desperately cheap scrounger.. ask restaurants for their old 
plastic cutting boards (which are usually UHMW PE).  They dispose of them 
periodically when they get too beat up to properly clean and 
sterilize.  Or, you could blow a few bucks at the local discount store and 
buy new ones.

Sharp tools needed!  If they're dull, they just melt the plastic and it 
gums up in a hurry.