[Amps] Vacuum Variable Help Needed

[k7fm]

"In my next life I'm going to have a completely equipped metal shop."

Life is too short not to have one.  But, it is addictive.  A mill and a 
lathe are handy, but then you will find out the advantages of a CNC machine. 
But, after you have one, you will have to teach yourself how to run it. 
Then, you will have to learn engraving.  Recently I needed to replace a 
missing knob on a rare old WWII high powered AM transmitter.  So, I taught 
myself how to cast knobs.  I got carried away and now have red, blue, green, 
yellow and plain black knobs.

I recall building things years ago with a drill, file and hacksaw.  It all 
looked like crap.  A couple years ago, I built a replica of a Paraset, which 
is a WWII spy transceiver.  Works beautiful, but the more I looked at it, 
the more the pop rivets bothered me.  They looked like crap.  So, I learned 
how to set real rivets and the next one is real.

I want to make some variable caps, although I still have a good supply. 
And, some day, I may want to learn how to make a vacuum tube.  Would be nice 
to be running a pair of K7FM tubes in the final.

73,  Colin  K7FM