MK-I MK-II MK-III MK-IV GULF MIRAGE J-CAR LOLA
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11-03-03, 01:18 PM
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#21 (permalink)
| | 2 Tenths
Join Date: Sep 2001 GT40: London, England
Posts: 230
Rep Power: 9  | Re: GT40 Crystal
Hi John
I would like one please, ship to the uk
Many thanks
Ian | 
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11-03-03, 03:59 PM
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#22 (permalink)
| | cward2 A Tenth
Join Date: Dec 2002 Location: Houston, Texas GT40: ERA
Posts: 133
Rep Power: 7 | Re: GT40 Crystal
I sent you email. Need two. One for work and one for home. | |
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11-03-03, 05:17 PM
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#23 (permalink)
| | Pete Lifetime Premier Supporter
Join Date: Jun 2003 Location: Brisbane, Austr GT40: GT40 Australia.
Posts: 2,829
Rep Power: 37 | Re: GT40 Crystal
[ QUOTE ]
I would imagine that this process uses two lasers posistioned orthogonally that constructively interfere at the point at which you wish to have the glass fractured. This should be able to produce submicro fractures in the glass for fantastic resolution.
Jeez Ron what the hell does that mean??? [img]/ubbthreads/images/graemlins/confused.gif[/img]
R
[/ QUOTE ] | |
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11-03-03, 06:46 PM
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#24 (permalink)
| | Gold Supporter
Join Date: Apr 2002 GT40: Houston, Texas
Posts: 678
Rep Power: 13 | Re: GT40 Crystal
Not being an expert, but when has that ever stopped me before...Maybe it's two and the intersection of the beams is where the fracture takes place. I remember doing a job at NASA once and they had this really cool machine that made mock-ups of various parts. A lasar was focused on a bed which was submersed in a special liquid. As the lasar traced out the pattern, the liquid was turned to a solid and the bed was moved lower and lower into the liquid as the part was built up. Very neat. I think I watched for something like an hour before being chased back to work. I'm not sure that this lasar would have created a rod if allowed to shine all the way through the vat if the bed was removed, or if it focused specifically at the plane where the bed sat. Probably way above my head for understanding. Neat stuff, though. | |
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11-03-03, 07:01 PM
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#25 (permalink)
| | Ron Earp Site Administrator
Join Date: Sep 2001
Posts: 3,841
Rep Power: 54  | Re: GT40 Crystal
Pete, it means basically what Pat said is simple terms. The lasers are 90 degrees to one another (orthogonal) and where they meet is where the fracture can occur. It could eb accomplished with a single laser and lens system but it would not be nearly as precise and would result in some residual heating (and maybe fracture) at unwanted spots.
Ron | |
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11-03-03, 09:07 PM
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#26 (permalink)
| | Jools A Tenth
Join Date: Oct 2003 GT40: Ascot , UK
Posts: 158
Rep Power: 6 | Re: GT40 Crystal
Hi John,Please put me down for one of your crystal's + shipping to U.K. | |
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11-03-03, 10:14 PM
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#27 (permalink)
| | CCX33911 10 tenths
Join Date: Dec 2001 GT40: Virginia
Posts: 1,222
Rep Power: 19 | Re: GT40 Crystal
[ QUOTE ]
Not being an expert, but when has that ever stopped me before...Maybe it's two and the intersection of the beams is where the fracture takes place. I remember doing a job at NASA once and they had this really cool machine that made mock-ups of various parts.
[/ QUOTE ]
This is known as stereo lithography. It is a polymer that is cured when heated by a laser. It is good for making cheap 3-D mockups, etc. The tolerance is only about .003 inches.
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11-04-03, 04:21 AM
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#28 (permalink)
| | Fatal Attraction Bronze Supporter
Join Date: Nov 2001 Location: Lewes, Delaware, USA GT40: Ex-DRB #35
Posts: 1,496
Rep Power: 21 | Re: GT40 Crystal
You guys are getting too high tech! [img]/ubbthreads/images/graemlins/confused.gif[/img]
I like to think that it was magic [img]/ubbthreads/images/graemlins/cool.gif[/img],
just like the car represented! [img]/ubbthreads/images/graemlins/grin.gif[/img] | |
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11-04-03, 05:24 AM
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#29 (permalink)
| | PDub 6 Tenths
Join Date: Jul 2003 Location: London, UK GT40: Tornado
Posts: 632
Rep Power: 12 | Re: GT40 Crystal
Uses the same principle as a magnifying glass and the sun on a piece of paper. | |
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11-04-03, 11:35 PM
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#30 (permalink)
| | Gold Supporter
Join Date: Apr 2002 GT40: Houston, Texas
Posts: 678
Rep Power: 13 | Re: GT40 Crystal
You're right Gary, now I remember the name. Fun to watch a part actually grow right before your eyes. | |
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11-05-03, 05:11 PM
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#31 (permalink)
| | Pete Lifetime Premier Supporter
Join Date: Jun 2003 Location: Brisbane, Austr GT40: GT40 Australia.
Posts: 2,829
Rep Power: 37 | Re: GT40 Crystal
Phewww, all this is getting a little to complicated for a simple boy from the bush. Look forward to seeing the real thing | |
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11-06-03, 12:18 AM
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#32 (permalink)
| | 4 Tenths
Join Date: Sep 2001 GT40: Phoenix
Posts: 462
Rep Power: 11 | Re: GT40 Crystal
Well said Pete, but as Bill said it's nothing more than magic. Plain and simple.
Everyone that has shown an interest should have a reply from me by now. If you do not please e-mail me @ ssjs2@aol.com and I will make sure you are on the list. It's filling up fast.
John | |
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11-13-03, 12:38 AM
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#33 (permalink)
| | 4 Tenths
Join Date: Sep 2001 GT40: Phoenix
Posts: 462
Rep Power: 11 | Re: GT40 Crystal
Ron,
With the addition of the new" GT40 Memorabilia" section I would like you to move this one on over to were it belongs.
Thanks!!
They're are almost all spoken for (maybe 8 left to go) so like I said the 50 then that's it. Sorry if this messes anyone up that was holding out until December. I would like to see them all spoken for so I can make the X-mas day requests.
Thanks again Ron. Great job.
John | |
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11-13-03, 07:27 AM
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#34 (permalink)
| | Maxiboy Lifetime Premier Supporter
Join Date: May 2002 Location: Dorset, UK GT40: MK1 KVA type C
Posts: 400
Rep Power: 11 | Re: GT40 Crystal
John,
I have posted on the forum and sent Ron an email saying that I would be happy to be the moderator for that forum (as I was nominated after having suggested it in the first place), however this has not happened as yet, I guess Ron is busy.
If he does do this, then I will move this thread, & others I know of, to the appropriate forum.
Max | |
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11-23-03, 10:14 PM
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#35 (permalink)
| | 4 Tenths
Join Date: Sep 2001 GT40: Phoenix
Posts: 462
Rep Power: 11 | Re: GT40 Crystal
Here are a few better pictures just incase there are any people still left on the fence. Note they do not have the GT logo but the "new" ones will. Just a couple left and December 6th (the cut off) is coming up fast. [img]/ubbthreads/images/graemlins/grin.gif[/img]
John | |
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11-23-03, 10:16 PM
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#36 (permalink)
| | 4 Tenths
Join Date: Sep 2001 GT40: Phoenix
Posts: 462
Rep Power: 11 | Re: GT40 Crystal
left side | |
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11-23-03, 10:17 PM
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#37 (permalink)
| | 4 Tenths
Join Date: Sep 2001 GT40: Phoenix
Posts: 462
Rep Power: 11 | Re: GT40 Crystal
right side | |
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11-23-03, 10:19 PM
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#38 (permalink)
| | 4 Tenths
Join Date: Sep 2001 GT40: Phoenix
Posts: 462
Rep Power: 11 | Re: GT40 Crystal
and front | |
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12-06-03, 11:58 AM
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#39 (permalink)
| | 4 Tenths
Join Date: Sep 2001 GT40: Phoenix
Posts: 462
Rep Power: 11 | Re: GT40 Crystal
OK guys today is the last day. I will be ordering in the pieces tommorrow. If you are at all interested let me know.
I may do a few extra just to round it to a even number but that will be it.
Take care and happy holidays,
John | |
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12-06-03, 01:32 PM
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#40 (permalink)
| | 40bud 6 Tenths
Join Date: Nov 2001 Location: San Francosco a GT40: GTD Finished in
Posts: 682
Rep Power: 13 | Re: GT40 Crystal
John, every time I see this crystal art I get more intrigued. Can't wait to see the real thing. | |
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