[R-390] 390A Drawings, was Engraved front panels

[Scott, Barry (Clyde B)]

I believe they used a Pantograph.  It is very much like the engravers you see used for badges.  They use a similar machine at places that do engraving for jewelry.  It is a time-consuming process, but it does do a good job.

I have a panel from a frame of unknown manufacture.  I stripped it down to the bare metal and, under an eye loupe, you can see the rough surface that is typical of an engraving process.

Barry(III) - N4BUQ


So what kind of machine was used to do engravings?  I'm 
familiar with the badge engravers used at conventions and 
'fests to engrave names in plastic.  Is that what Tom means 
by 'rotary tool'?  How much set up time and expense would it 
be to take a silk screened panel and engrave it?  Lets hear 
from you machinists.

Don