Coil Construction, was: [AMRadio] Fun with 4D32's...

[Jim Wilhite]

True if you go slow.  Too much heat and pressure can cause 
stress cracks.  But one can do it the way you describe.

Jim
W5JO




> Jim, never had a problem with cracking if you use a drill 
> press.
>
> Dave, W3ST


>>I am not sure what polycarbonate is, but use Lexan.  You 
>>can drill and cut it with your normal power tools without 
>>problems of melting at the drill or cut lines.
>>
>> If you use the old stuff, you should modify your drill 
>> bit by removing the edge of the cutting planes.  In other 
>> words, make it dull and drill very slowly or it will 
>> crack or melt.
>>
>> Jim
>> W5JO