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Post by 1dave on Mar 11, 2019 8:30:24 GMT -5
jamesp hates having to waste time drilling his tumbled glass. Carborundum bits, diamond bits, spinning or vibrating, . . . How about using a laser? Is that possible?
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jamesp
Cave Dweller 
Member since October 2012
Posts: 36,602
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Post by jamesp on Mar 11, 2019 9:04:47 GMT -5
Going James Bond 1dave ? Beware of laser drilling mirrors ! |
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Post by 1dave on Mar 11, 2019 9:07:18 GMT -5
It would be fast - especially on fingers.
20 years ago a friend was carving images into wood using lasers.
I haven't run across anything about it recently.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,602
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Post by jamesp on Mar 11, 2019 10:36:38 GMT -5
It would be fast - especially on fingers. 20 years ago a friend was carving images into wood using lasers. I haven't run across anything about it recently. There is a laser cutting shop close by with big computerized x/y tables. Tables looks bigger than 5' x 10'. Evil cutting machine. They may be sold for wood working on a more affordable level these days. |
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cosmetal
starting to spend too much on rocks
Member since September 2018
Posts: 115
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Post by cosmetal on Mar 11, 2019 10:38:28 GMT -5
It would be fast - especially on fingers. 20 years ago a friend was carving images into wood using lasers. I haven't run across anything about it recently. Sweet set-up to have in your spare bedroom. But, I think it could "blow-up" any rocks, glass, crystals, etc. if you "zapped" any area that contains trapped gases, water, voids, etc. James |
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Deleted
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Post by Deleted on Mar 11, 2019 12:54:54 GMT -5
But, I think it could "blow-up" any rocks, glass, crystals, etc. if you "zapped" any area that contains trapped gases, water, voids, etc. I agree. A water-jet might be safer on hard materials (they are used on stone, glass and metal). The diameter of the hole produced will depend on the fineness of the grit they shoot. I suspect for most here, a bead drill outfit (drills from both sides) is going to produce the smoothest and most affordable holes - and likely only a bit slower when you consider the prep. |
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Post by 1dave on Mar 11, 2019 13:04:47 GMT -5
But, I think it could "blow-up" any rocks, glass, crystals, etc. if you "zapped" any area that contains trapped gases, water, voids, etc. I agree. A water-jet might be safer on hard materials (they are used on stone, glass and metal). The diameter of the hole produced will depend on the fineness of the grit they shoot. I suspect for most here, a bead drill outfit (drills from both sides) is going to produce the smoothest and most affordable holes - and likely only a bit slower when you consider the prep. Any images, articles? |
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cosmetal
starting to spend too much on rocks
Member since September 2018
Posts: 115
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Post by cosmetal on Mar 11, 2019 13:19:42 GMT -5
Ditto on using the waterjet vs. laser. But, if using a waterjet, be prepared for the "mess" even if its "self-contained". Of course, as you said "and likely only a bit slower when you consider the prep" all of this is dependant upon your production needs/goals. It would be wonderful if we could convince an MIT grad student to run some comparison tests between drilling with a laser or a waterjet. Can tumbled and drilled gemstones be used with an ICBM defense system?  James |
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Post by vegasjames on Mar 11, 2019 13:41:12 GMT -5
A laser would not be a good idea.
First of all the rapid heating would likely shatter the glass.
Secondly it would only possible work in areas where there is a specific color or opacity to the glass. Lasers can work on certain colors for example if they can absorb the wavelength. Or again with an opacity where the beam will concentrate. If the glass is clear the laser would pass through unless there is something to absorb the wavelength. Although this would create a very uneven heating again shattering the glass.
And what if there is something reflective in the glass redirecting the beam? Could be very dangerous.
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Deleted
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Post by Deleted on Mar 11, 2019 13:57:24 GMT -5
Can tumbled and drilled gemstones be used with an ICBM defense system? I suppose if the rocks have high enough iron content, they could be fired by railguns. Can only imagine what defense contractors would pay for tumbled - er - "aerodynamically smoothed projectile munitions"  |
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Post by vegasjames on Mar 11, 2019 14:17:50 GMT -5
Can tumbled and drilled gemstones be used with an ICBM defense system? I suppose if the rocks have high enough iron content, they could be fired by railguns. Can only imagine what defense contractors would pay for tumbled - er - "aerodynamically smoothed projectile munitions"  Probably a fortune. Remember this is the same military that was spending $700 on individual hammers and toilet seats. |
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El JeffA
spending too much on rocks
Member since February 2016
Posts: 353 
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Post by El JeffA on Mar 11, 2019 23:26:34 GMT -5
There is a good video on YouTube of Highland Park Lapidary’s ultrasonic drill where a 1/4” thick agate is drilled with a 1.5 mm bit with SIC grit in about 30 seconds... a softer jasper in about 20 seconds. Safe AND fast! Price is in the $1600 range but depending on time/need, may be worth the money. In a couple of hours, hundreds of glass slabs could be drilled cleanly.
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Post by 1dave on Mar 12, 2019 5:53:53 GMT -5
Drilling
Overview
Replacing Frequency Tuner on Ultrasonic Drill, soldering new pin.
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Post by 1dave on Mar 12, 2019 10:35:11 GMT -5
A Jacobs Chuck won't take the vibration?
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cosmetal
starting to spend too much on rocks
Member since September 2018
Posts: 115
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Post by cosmetal on Mar 12, 2019 13:33:35 GMT -5
Can tumbled and drilled gemstones be used with an ICBM defense system? I suppose if the rocks have high enough iron content, they could be fired by railguns. Can only imagine what defense contractors would pay for tumbled - er - "aerodynamically smoothed projectile munitions"  @rocks2dust Brilliant idea! I bet you could convince DARPA to shell out at least $1MM for further research into your ASPM projectiles.  James |
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