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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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#41
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Newton's cradle
Matty F wrote:
On Jul 4, 8:42 pm, Mike Barnes wrote: http://www.jubileeclips.co.uk/pdfs/L...uperclamps.pdf (you could DIY a slightly neater looking version I'm sure) or these if the crimp marks could be concealed: http://www.jubileeclips.co.uk/pdfs/L...0O%20Clips.pdf In any event clips would be good for quick non-destructive testing of the dynamic properties of various ball materials. I think I could make some neat clips out of strips of sheetmetal and roll the join together. Nobody had mentioned duct tape. I have some clear duct tape! I have now bought the billiard balls (new) for almost nothing. Would a single cable tie secured in place with something like Loctite to stop it slipping off work? Tim |
#42
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Newton's cradle
"Matty F" wrote in message ... On Jul 5, 12:47 pm, Roger Dewhurst wrote: Matty F wrote: On Jul 4, 11:55 am, Roger Dewhurst wrote: Forget the billiard balls and go looking for the largest ball bearing available. They might come from some very heavy machinery, not necessarily with wheels! Steel is much more elastic than billiard ball material. I mean elastic in the physical sense not like rubber. I've already considered steel balls. If they were the size of billiard balls or bigger, they would be very heavy and would squash the fingers of the unwary and OSH would be nasty to me. I have considered steel rods in wooden balls. I may go back to that seeing as the billiard balls are going to be more expensive than I thought. This thing works because and only because of the elastic property of steel. Where were you when I last discussed this? You mean my billiard balls won't work now that I bought them? However I just tested them. They seem to work fine! Putting "newton's cradle" into youtube brought up http://www.youtube.com/watch?v=mFNe_pFZrsA and http://www.youtube.com/user/PaulOrse.../2/ohC9u8M7ZiQ The guy has a website http://www.orselli.net/ However I liked http://www.youtube.com/watch?v=Lkn6fMn9eqU Cheers Adam |
#43
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Newton's cradle
Tim Downie wrote:
Matty F wrote: On Jul 4, 8:42 pm, Mike Barnes wrote: http://www.jubileeclips.co.uk/pdfs/L...uperclamps.pdf (you could DIY a slightly neater looking version I'm sure) or these if the crimp marks could be concealed: http://www.jubileeclips.co.uk/pdfs/L...0O%20Clips.pdf In any event clips would be good for quick non-destructive testing of the dynamic properties of various ball materials. I think I could make some neat clips out of strips of sheetmetal and roll the join together. Nobody had mentioned duct tape. I have some clear duct tape! I have now bought the billiard balls (new) for almost nothing. Would a single cable tie secured in place with something like Loctite to stop it slipping off work? Tim Loctite sticks to plastic? |
#44
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Newton's cradle
On Fri, 02 Jul 2010 18:19:18 -0700, Matty F wrote:
OK I've decided to use billiard balls for my Newton's cradle. But I would rather not drill into the balls or try to glue things on them. How can I hold the balls in position? This very large version has some rings, which is what I am considering: http://i48.tinypic.com/1euurq.jpg hmm, one elegant approach might be a disc of metal (washers with very large inner diameters) at each side of the ball and four rods connecting them, forming a cage around the ball. With the right kind of metal, acorn nuts etc. I think it could look quite interesting. |
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