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With all respect (and delight) for the solutions above, I come to add another one. The Electronic Lead Screw for lathe or ELS: Please take a look at his other videos and consider he has a page on Github with (almost) any detail relating to his nano-ELS Why I support it? Because it is not that...

Could be that it can be used with a bit more fiddling also for the constant radius part of the cams? Maybe a derivative device to allow finishing on a grinding machine of the same area.

Tough job! I'm watching closely your progress!

Just a dumb question. Usually changing plans during the game generates a mess, but have you ever thought at a staged cycle (don't pretend this is the exact technical term) where freon would be the lower stage? This would bring it somehow in the safer area. Off course, I have no ideea what the...

Hi Toymaker, I think you know old steam locomotives have an overall efficiency of about 10%. Though I do not put an "=" between a classic steam engine and your turbine, I think you know what you expect from it, more or less.

A rabbit enters a bar and says "a small glass of whiskey, please" Why for? Because I need to gain enough courage to kill the wolf! A fox enters the bar and says "3 small glasses of whiskey, please" Why for? Because I need to gain enough courage to kill the wolf! A bear enters the bar and says...

Take a look at this video: I consider it very interesting; though I do not necessarily recommend it as there are relatively cheap/ proven comercial devices for melting aluminum. So what-s the point? At 23.20min. you have the solution of freezing the core to keep its shape, taking it out of PLA...

Hi, I speak both from my experience and from info available on the net. This is a universal HSS sharpening machine (on cheap side). It uses a diamond coated wheel. It is long time produced and sold under various brands. So- yes, diamond disks are default for what you ask. It is made for...

I have followed this discussion and I I'm aware of intended conditions: pure water - non-conductive, inhibitors, vapour state inside boiler ... My question : electro-chemical corrosion by using various metals in contact ( aluminum/copper ...) wouldn't raise problems ? There are both running and...

The last posts sparked me some questions/ideea, though I am not ideal person to raise them: "one BHP (Boiler Horse Power) = 13.155 standard HP" seems to reflect an overall cycle efficiency of about 7.6% which comes from experience with older steam engines. Your real efficiency could be very...

It resembles somehow a cylinder head ... :) I am pretty sure you have made the dimensioning calculations and considered safety factors, but because it looks to me the most dangerous part of the vapour circuit in case of malfunction, I consider appropriate to ask for it. Good luck!

I subscribe to Scott_M's post and solution. I have bad experiences with mechanical removal of broken drills. Good luck!

Hi Toymaker, Food for thought. What about a test to fail on a straight sample of tube. Of course, also here are a lot of maybes (vs bended tube interpretation), but at least would give a magnitude order to the reduction in strength. Also measurements on tube thickness all around in section...

Hi Toymaker, I see a tooling mark along the tube which I suppose comes from bending process. Could be stress from bending tool and wall thinning (in that area seem to be very high contact forces and material push outwards) the reason for failure happening in that neutral fiber (or close to) of...

Sorry, my mistake. I wanted to underline that before reaction we have liquid and after, gases which occupy a much larger space (or raise the pressure accordingly) . But I think this discussion tends to cover the real subject of this thread so I'll stay low. Everybody is free to see things as he...

We are too much used to consider heat the only output of a chemical reaction. But - for one instance - in batteries (rechargeable type) the output of chemical reactions is electric energy which at it's turn can generate mechanical output; while heat generation during charging-discharging is a...

Hi HMEL . I don't deny the main nature of IC engines as thermal engines. What I'm saying is there is a fraction of engine's output which is not due to thermal cycle but to phase transition solely (and I have illustrated it in nitroglycerin's case). While it might not be important and is lost...

Thank you very much for details! Cheers!

Thank you, Steamchick! Very interesting this phenomenon (Rijkes tube resonance) which appears to be not only acoustic but also thermodynamic. Do you have any ideea about material of the tube in the video? I'm very curious to replicate it as it looks much like magic (I know it is real...). It...

Steamchick, it is engineering, I say! I have never heard about Rijke's tube resonance (saw your link :-), but I think it is a very interesting effect, Is it important? In my mind I can link it to a certain high speed operating mode of engine on SR71 as a ramjet. (bypassing turbine/compressor)...