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Messages - scratchie

Pages: 1 2 [3] 4 5 ... 12
31
Gemstone Faceting / Re: light position
« on: March 08, 2016, 03:50:45 PM »
You don't want to be looking for the reflection of your lightbulb. You need to be just off the reflection angle so you are looking across the face of the facet. If you're not familiar with this approach take the stone into sunlight - have the sun coming over your shoulder and move the stone around so you're not getting a reflection of the sun but are just a degree or so away from the reflection and you can look across the facet and any scratches will stand out like ******
Note my forum name - I chose "scratchie" I chose it because I have spent years finding the best way to see scratches !!
John

32
General Discussion / Re: Cramps
« on: January 12, 2016, 10:28:45 AM »
I don't want to turn this into a health forum but cramps are a problem because there doesn't seem to be a single solution. And they are painful and debilitating.
All the advice I have seen in this post has been good. Rehydration and mineral supplements are the most successful in controlling cramps. I'll throw in my two bob's worth.
Magnesium - try and find a product called Organic Magnesium Excel - I've found them the best.
Rehydration - definitely - urine should be almost colourless. An alternative to Gatorade is Staminade. AND
if you have a glass of wine or spirits you must drink at least two glasses of water to counter the dehydration effect - one glass of wine , two glasses of water - two glasses of wine , four glasses of water etc.
Can't comment on beer - I rarely drink it so have no experience
Wishing you a cramp free 2016
John

33
General Discussion / Re: Disappointed with ShellLap/Gemmasta
« on: November 09, 2015, 12:57:13 PM »
Andrew ,
You only need one block - after you transfer, put the new dop  into the quill with the original dop plus block still attached. You can then align the stone with the block flat on the lap , tighten the quill ( without overtightening) and gently heat the wax to release the original dop and block.[size=78%].[/size]
I'M sure there has been a detailed explanation in publications in the past but can't put my finger on one at the moment. If this explanation is not clear PM me and I'll try and be more detailed.
John

34
General Discussion / Re: Disappointed with ShellLap/Gemmasta
« on: November 07, 2015, 02:24:25 PM »
In my area there are 3 or 4 Gemmasta machines and the owners have taken the locating pin out of both the quill and the transfer jig.  We all use a clamp block on the dopstick when transferring and find this OK . That's got nothing to do with a bent dop stick - the best thing to do with that is throw it with your right hand over your left shoulder.
John





35
Gemstone Faceting / Re: Polishing quartz - what do you use?
« on: October 18, 2015, 03:44:18 PM »
Amen , brother Ben !
Wouldn't life be boring if there was only ONE way we were allowed to do anything and the style police would lock you up for transgressing!!.
Regards
John


36
Gemcad Discussions / Re: Gemray Query
« on: October 18, 2015, 03:39:28 PM »
The stonesetter will not like the girdle to be too thick - on average size gems  thickness of the girdle is suggested  at 0.3 mm. As in all things  there is always a trade-off.!
Regards
John


37
Gemstone Faceting / Re: facet wiping
« on: September 24, 2015, 10:33:20 AM »
I find that if I am using an oil as a lubricant I can see the surface of the facet better if I gently wipe it with a little alcohol on a swab and then clean it with a very soft old cotton cloth. The alcohol will remove any oil.
John

38
Gemcad Discussions / Re: Gemray Query
« on: September 17, 2015, 01:57:45 PM »
You guys have entered into a fascinating area of faceting. I have a habit of always testing a new design with Gemray for Windows before cutting it. Sometimes the difference in the finished gem is small but in such a competitive game every flash of light gained is a bonus. Gemray is not the definitive answer in all cases but it's a bloody good program to use and understand. It's a shame that designs for competitions aren't routinely tested with Gemray - the corundum example is an example.
Some time ago Roberts Strickland was quoted as saying something along the lines that changing angles  can improve the finished sone but NOTHING beats a good polish. If you receive the Facetors Guild magazine , Facet Talk, you will see many examples of Gemray modified stones , mostly by the editor, John Broadfoot.
Keep this interesting topic going.
John

39
Gemstone Faceting / Re: TopazTec Faceting machine
« on: June 11, 2015, 12:08:42 PM »
Thanks Paul ,
Will follow up your suggestion.
John

40
Gemstone Faceting / Re: TopazTec Faceting machine
« on: June 10, 2015, 05:23:39 PM »
Thanks Paul,
The machine has a 240v AC input and power passes through a circuit board and then to a DC motor. The circuit board also controls the speed of the motor. This controller board was made by a company in Florida who we haven't been able to find now. Likewise the manufacturer of the machine has apparently gone out of business.
Hence our thoughts to fit a 240v AC motor and suitable speed controller . The machine itself looks to be well engineered and is in very good condition apart from the electrics so it is well worth repairing.
I seem to recall some Clubs in Queensland ? were using TopazTec machines for teaching so am still hopeful that my cry for help will reach one of them.
John

41
Gemstone Faceting / Re: TopazTec Faceting machine
« on: June 09, 2015, 11:27:00 AM »
Surely there are TopazTec users out there who can help !!
John

42
Gemstone Faceting / TopazTec Faceting machine
« on: June 05, 2015, 04:36:56 PM »
We have a TopazTec XT6 machine at our Club. It seems there is a problem with the electronics that control the motor speed. Also the DC motor may need some attention. Our thoughts are to replace the motor with an AC motor and fit a suitable speed controller. Has anyone tried such a conversion and was it successful. Any help will be appreciated because the rest of the machine is in excellent condition.
Hopeful someone can help
John

43
Gemstone Faceting / Re: Topaz advice needed
« on: June 02, 2015, 11:17:40 AM »
Do you understand about the cleavage plane in topaz.? If not , there is plenty of info on this forum and in books about locating the cleavage plane before you start. This may be your problem with this stone
Rgards\John

44
Gemstone Faceting / Kapunda quartz
« on: April 07, 2015, 04:47:43 PM »
Sometime ago I saw a mention of Kapunda Quartz . Can anyone advise a possible source of this for faceting?
I recall there were quarries outside Kapunda for marble or granite. I believe this stone was used to face Parliament House in Adelaide, but i have never seen Kapunda quartz.
Happy faceting
John

45
Gemstone Discussions / Re: Real Sapphire or Glass?
« on: November 16, 2014, 06:09:33 PM »
I think you've been given the best advice in this forum. Take it to a qualified gemmologist who will give you a written identification . All your wonderings will be over .
And also not all lapidary clubs will have a member who is a QUALIFIED gemmologist. Don't take the word of any average rockhound - get a 100% identification and put the matter to rest.
Good luck
John

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