WTB used long shank Sapphire/Ruby needles

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DJA-L303
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WTB used long shank Sapphire/Ruby needles

Post: # 36454Unread post DJA-L303
Wed Aug 05, 2015 9:31 pm

Hello, I am desperately in need of getting my hands on a gently worn Sapphire or Ruby long shank needle to complete a polycarbonate embossing project. I have tried ordering a new 462 Ruby from Apollo but it was too sharp to emboss. I have also tried every steel needle on the market but they didn't quite hit the target of what I was looking for. Any help is much appreciated! Thanks Aaron... futureclassicmusic at gmail

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studiorp
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Re: WTB used long shank Sapphire/Ruby needles

Post: # 36459Unread post studiorp
Thu Aug 06, 2015 3:20 am

Have you tried tungsten ? Seems be more hard than a normal steel stylus, similar to diamond...

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uvoscillator
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Re: WTB used long shank Sapphire/Ruby needles

Post: # 36460Unread post uvoscillator
Thu Aug 06, 2015 3:23 am

I have 6 used and one new with 362 shank
Best !

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The Shank
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Re: WTB used long shank Sapphire/Ruby needles

Post: # 36461Unread post The Shank
Thu Aug 06, 2015 3:45 am

studiorp wrote:Have you tried tungsten ? Seems be more hard than a normal steel stylus, similar to diamond...


Definitely not.
http://www.myshank.com
skype : steven.myshank

* Diamond cutting stylus officials/prototypes
* Resharpening services
* Blank records
* Cutting lathe

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studiorp
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Re: WTB used long shank Sapphire/Ruby needles

Post: # 36462Unread post studiorp
Thu Aug 06, 2015 3:53 am

Why not ? Is there a specific reason ?

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The Shank
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Re: WTB used long shank Sapphire/Ruby needles

Post: # 36464Unread post The Shank
Thu Aug 06, 2015 4:07 am

studiorp wrote:Why not ? Is there a specific reason ?
...and I guess you should know why because you say that...
http://www.myshank.com
skype : steven.myshank

* Diamond cutting stylus officials/prototypes
* Resharpening services
* Blank records
* Cutting lathe

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The Shank
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Re: WTB used long shank Sapphire/Ruby needles

Post: # 36465Unread post The Shank
Thu Aug 06, 2015 4:18 am

And FYI :

Hardness Substance or mineral :

0.2–0.3 caesium, rubidium
0.5–0.6 lithium, sodium, potassium
1 talc
1.5 gallium, strontium, indium, tin, barium, thallium, lead, graphite, ice[12]
2 hexagonal boron nitride,[13] calcium, selenium, cadmium, sulfur, tellurium, bismuth, gypsum
2.5–3 gold, silver, aluminium, zinc, lanthanum, cerium, Jet (lignite)
3 calcite, copper, arsenic, antimony, thorium, dentin
3.5 platinum
4 fluorite, iron, nickel
4–4.5 steel
5 apatite (tooth enamel), zirconium, palladium, obsidian (volcanic glass)
5.5 beryllium, molybdenum, hafnium, glass, cobalt
6 orthoclase, titanium, manganese, germanium, niobium, rhodium, uranium
6–7 fused quartz, iron pyrite, silicon, ruthenium, iridium, tantalum, opal, peridot, tanzanite
7 osmium, quartz, rhenium, vanadium
7.5–8 emerald, hardened steel, tungsten, spinel
8 topaz, cubic zirconia
8.5 chrysoberyl, chromium, silicon nitride, tantalum carbide
9 corundum, tungsten carbide (and this is information is not really true, tungsten, is around 8 - 8.5)
9–9.5 silicon carbide (carborundum), titanium carbide
9.5–10 boron, boron nitride, rhenium diboride, stishovite, titanium diboride
10 diamond, carbonado
>10 nanocrystalline diamond (hyperdiamond, ultrahard fullerite)
http://www.myshank.com
skype : steven.myshank

* Diamond cutting stylus officials/prototypes
* Resharpening services
* Blank records
* Cutting lathe

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studiorp
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Re: WTB used long shank Sapphire/Ruby needles

Post: # 36466Unread post studiorp
Thu Aug 06, 2015 4:33 am

Thanks for this table, so for example a tungsten double a steel stylus, interesting...

And about syntetic diamond ?

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The Shank
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Re: WTB used long shank Sapphire/Ruby needles

Post: # 36467Unread post The Shank
Thu Aug 06, 2015 4:54 am

studiorp wrote: And about syntetic diamond ?
That's a very interesting question... And I'll create a topic soon about that, about diamond stylus and the transformation from a rough to a final stylus.
http://www.myshank.com
skype : steven.myshank

* Diamond cutting stylus officials/prototypes
* Resharpening services
* Blank records
* Cutting lathe

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DJA-L303
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Re: WTB used long shank Sapphire/Ruby needles

Post: # 36476Unread post DJA-L303
Thu Aug 06, 2015 3:09 pm

I've tried both the one found on Ebay and Farmer John's tungsten stylus' but neither compare to a sapphire IMO

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Fatrecco
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Re: WTB used long shank Sapphire/Ruby needles

Post: # 36770Unread post Fatrecco
Mon Aug 17, 2015 5:15 pm

That table (mohs?) means low alloyed Steel. High aloyed and hardened Steel which is used for forming metal, wood or plastic whould be much higher situated on this table. It whould be compete with tungsten.

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