Rifling machine plans

The Army taught me computer electronics at that RTL and DTL level in

1970. Flip-flops used tricky level shifting and diode steering to direct a capacitive clock pulse to turn off the base of the On transistor. Luckily I had learned DC and AC network analysis in college Physics classes. Later I got into the design of custom ICs, beginning with a DRAM controller for the digital signal processor in a color scanner. When I started as a lab tech at Unitrode my training assignment was to dissect an IC layer by layer with nitric acid and draw the schematic. I got all the current mirrors, gates, op amps and comparators right but couldn't decipher the innards of the voltage reference circuit.

Leon Fisk snipped-for-privacy@gmail.invalid on Mon, 25 Nov 2019 13:27:37 -0400 typed in rec.crafts.metalworking the following:

IF you have the skill, sure. My skills aren't _that_ good.

I've bought boxes, cabinets, and the like on the grounds "The hardware is more than they're asking for the whole thing!"

Quilters used to give away their hard work, too, but they found a marketing scheme which now sees quilts go for hundreds of dollars. Find your marketer, dude.

Larry Jaques snipped-for-privacy@invalid.diversifycomm.com> on Fri, 29 Nov 2019

20:56:15 -0800 typed in rec.crafts.metalworking the following:

It is a possibility. BUT ... I went to tech school to learn machining, because woodworking was a hobby/relaxation. However, as I've said, "I hired this company to collect my pay from customers, oh, and to find customers, suppliers, and to handle the paperwork side of the business."

>

"The system was satisfactory for tram engines (which were very low-powered) but would not have worked for larger railway locomotives."

"South African Railways was famous for its condensing 4-8-4's, which were built to support steam operation through a desert where water was unavailable. The condensing gear, which was mounted in the tender, had its own maintenance needs above and beyond that of the rest of the locomotive. SAR also had otherwise identical conventional 4-8-4's for service elsewhere, which implies that the condensing gear existed only for a special situation."

Their disadvantages were tolerated when necessary to solve more serious problems. Somewhere I read that their maintenance was quite high, due partly to cracking from hammer blow. Your small loading gauge severely restricted what could be hung on the outside in the air flow.