Gallery, Projects and General > Project Logs
Heron's Aeolipile
Darren:
Excellent work, can't wait to see the vids......fingers crossed for you for the final test.... :dremel:
Divided he ad:
Sorry for not getting the videos sorted.... Been a little busy.... and then been trying to remember that there is much more to life than money!
Anyway.....
I got a little time in the shop tonight and this is the result... Not too positive but time will prevail!! (I hope!)
First drilled the punch and fitted a centring pin, the ball needs a hole top and bottom, might as well help centre the disc.
Then mounted the die and punch using the centre pin to aid this.
Ignore the brass bit for now, that was a but after setup!!
Now I tried a piece of thin ali can and it just split! So I decided to have a go at a piece of annealled brass.
A 1mm thick circle that was donated by John was the first test.... Not really thin enough! But worth a try!!
So back to the part you see in the above set up pic's... A piece of 0.5mm thick brass engraving plate (it's all I had!)
Well it was not the best result!
So I think I need to go a little thinner!
The Ali die is holding up to the tests well though, even though it has left a polished mark there is no feelable (I trust my fingers to find imperfections and there were none evident) damage to the die after the folding piece was removed.
I'll order some thinner plate and have a go at a few with that.... See how it goes, Now the question is should I use copper as it is softer and more sympathetic to my needs?
Or should I try and stick to brass??
Decisions, decisions!!!
Your turn guys, lets hear what you would do at this point?
Ralph.
HS93:
I watched a program on the tv recently and they did stamping in stages, they seemed to do a pre shape then do the finnal stamp, I made some small vents for a moddel boat some time ago and I found the size and shape of the material was very important.I also found the thicknes important , to thin caused more problems than to thick. I did it in stages but it did not make much of a difference
Peter
Darren:
Ralph, might a bit/a lot of heat help?
maybe the die as well as the metal.
Darren
bogstandard:
Ralph,
As I said in our discussions about these things, timing and materials are of the essence. So hang fire a bit.
I was only talking to a chappie called Stew, who I have only recently met, and he comes from my local area, in fact about 1/2 mile away.
Well he seems to be a sort of specialist on this type of pressing, from his days at at a local MOD bomb factory, where he looked after machines that made munitions cases.
He has seen your post about when we made the die block, and came up with a couple of suggestions to me, and now looking at your results, his comments were spot on. But I am not going to tell you what they were, as that would spoil all the fun.
But I will contact him, and ask him to join the forum and give you some pointers that I know are way beyond my experience with this sort of thing.
Even if it doesn't work in the long run, all is not lost. You still have a perfect former if you want to go down the metal spinning route.
John
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