[Milsurplus] Cutting Thick, Clear Plastic

[Mike Hanz]

David Stinson wrote:

>I need to cut some clear, thick plastic without messing it up.
>I need a disc to replace a discolored R-4B tuning scale 
>and some misc. pieces for an Australian AR-8.
>Anyone have a good idea how to do this?
>

Could you define "thick" a bit better, Dave?  I'm not familiar with the 
R-4B.  I normally use sharp tools (honed just before use) and kerosene 
or WD-40 as the coolant (very important - the various plastics don't do 
well with dull tools and resulting heat.)  Use the "blue" masking tape 
to protect the clear surface while machining if there is nothing else on it.

73,
Mike