The gadget in the animated gif is what is known as a 'hot box ignition internal combustion engine'. The tell-tale is that box structure...
I love learning this kind of history from the 'other side'. Veterans are veterans no matter what side they were fighting for...it's just the rules...
I really miss Benny Hill...
Beauty and worth are definitely in the eye of the beholder. Yeah, I have a tendency not to look for the date of a post in a forum, the ongoing...
I used coffee cans, thinking I would save the plastics and use it for molding or painting or something. Never happened though, I had to move and...
GDJMSP, everybody with a brain knows that a coin has a collector value according to its grade and that doing anything that intentionally alters...
Yes, I get how that works. Thanks for that explanation, GDJMSP. So what you are telling me is that if I were to clean coins in a cartridge tumbler...
Yeah, I wondered about the validity of 'cleaning' a coin by subjecting it to normal wear and tear rather than other methods. I also have to wonder...
My favourite laboratory tale involves acetone, the six-year-old son of an Indian post-doc, and a handful of styrofoam packing peanuts. The little...
Okay, if we are talking about cleaning coins that are to be turned into jewelry and therefore have no collector value, then it makes perfect...
They kind of remind me of stretch marks.
You should be able to pick one up at any dollar store or surplus outlet for a bunch less than you guys are paying for them. Common things for...
That's all good to know. Thanks, BadThad, I appreciate that answer. I'm on a constant search for things I didn't know before, 65 years worth and...
That makes no sense...
I don't apologize for trying to add to the knowledge that others have. It is how I make my living, after all. It's a discussion for another place...
The formation of that 'protective' layer is called 'passivation', and it is different for different metals. Aluminum forms a layer of aluminum...
The other side of the composition coin (ba-boom-shee!) is that 99.99% inert also means 0.01% chemically active. It doesn't take much.
Correct me if I'm wrong about this, but those cutting fluids are not typically in contact with the metal for any significant length of time, are...
I think I am going to enjoy conversing with you...
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