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How can high-precision screw threads be made on a lathe using a less-precise leadscrew?

One combines multiple imprecise measurements to a more precise one. In the case of this screw cutting, the method alluded to here might involve cutting the same part with different portions of the ...
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Making sharp tip on tube

If you start with a stainless steel tube and spin form it on a lathe to the right profile you're 95% of the way there. Some experimentation might be required, but you can likely use heat to melt the ...
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Making sharp tip on tube

Stainless steel is not the greatest heat conductor so you might actually want to weld on be a reason to weld on a tip of a different material (i.e. solid copper but stainless plated). Another ...
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Is there a difference between deglazing and honing a cylinder?

These are two different things. Deglazing is done to remove the "burnt or cooked" oil coating from the cylinder walls during an overhaul if the cylinders are in good enough condition to not ...
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How are flat parallel surfaces made? For example gauge blocks?

It's less about how to make them and more about how to measure it. It actually is a valid method to freehand something and repeatedly check it against gauges until it matches. Since that's so time-...
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How are flat parallel surfaces made? For example gauge blocks?

Here's a possible answer and a source at least. I should also note that I just read this and am not an expert. I'm likely getting some details wrong here so please refer to the original source. That ...
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