Have you seen these puzzle boxes:
Relative crocheted custom table clothes when she was younger. They used sell for quite a bit. One in particular was $600 in the mid 1970's. I think they "earned" every bit of it though :)
I'm guilty of repairing many items though that would never be profitable to do for pay...
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!"
Here's a fine example of the protracted development of a promising but difficult idea into a practical product::
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."
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"The system was satisfactory for tram engines (which were very low-powered) but would not have worked for larger railway locomotives."
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.
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