does anybody know

[monk]

where to buy one or how to make one ? carious to try one.

 

[Matthew Evans]

.

 

[oniemarc]

I think I saw someine make these on either youtube or instagram. When I get home I'll search for it. Not promising anything though, hahaha

 

[mdengraver]

Interesting, aesthetically pleasing graver geometry, and nice cutting.

 

[Matthew Evans]

John Sorich IV on Instagram: "Handmade carbide cobra for hand engraving thick and thin lines with sharp turns I’ll be demonstrating with this at the Bench Jewelers Conference in Nashville with @grstools this weekend! Thanks for following!"

1,492 likes, 35 comments - johnnyoro on October 14, 2021: "Handmade carbide cobra for hand engraving thick and thin lines with sharp turns I’ll be demonstrating with this at the Bench Jewelers Conference in Nashville with @grstools this weekend! Thanks for following!".

www.instagram.com

 

[alfredo gm]

3 comments | Here’s my take on the Carbide Cobra graver used and taught here at @alexandreschool but originally used and developed by Keiji Kanagawa for engraving... | By Ster In The Shop | Facebook

Here’s my take on the Carbide Cobra graver used and taught here at @alexandreschool but originally used and developed by Keiji Kanagawa for engraving...

www.facebook.com

 

[alfredo gm]

On the net there isn't much about this type of buril, it looks like 150 degrees and there are only references that come from alexandre school

 

[Sinterklaas]

This was in the comments under the video from John S IV:

"it’s a #5 onglette cmax flipped upside down and then shaped by hand. If you try, using the blue diamond wheel will help you touch up the graver easier than just the grey shaping wheel."


Also I think Keiji Kanagawa was the original inventor of this graver. You can look him up on instagram.
He is a Japanese hand engraver. https://www.instagram.com/keiji_kanagawa33/

金川恵治 on Instagram: "質問にお答えして文字盤に渦巻模様を彫るビュランの形状を分かりやすく写しました。角度は135度です。 #watch #watchmaking #horology #handmade #bespoke #keijikanagawa #kcraftworkjapan #2k540 #engraver #engraving #engraved #handengraver #handengraving #handengraved #watchengraving

1,400 likes, 8 comments - keiji_kanagawa33 on March 15, 2022: "質問にお答えして文字盤に渦巻模様を彫るビュランの形状を分かりやすく写しました。角度は135度です。 #watch #watchmaking #horology #handmade #bespoke #keijikanagawa #kcraftworkjapan #2k540 #engraver #engraving #engraved #handengraver #handengraving #handengraved #watchengraving...

www.instagram.com

金川恵治 on Instagram: "文字盤に渦巻模様を彫っています。 #watch #watchmaking #horology #handmade #bespoke #keijikanagawa #kcraftworkjapan #2k540 #engraver #engraving #engraved #handengraver #handengraving #handengraved #watchengraving #watchengraver #エングレーバー #ウォッチメ

2,905 likes, 32 comments - keiji_kanagawa33 on March 12, 2022: "文字盤に渦巻模様を彫っています。 #watch #watchmaking #horology #handmade #bespoke #keijikanagawa #kcraftworkjapan #2k540 #engraver #engraving #engraved #handengraver #handengraving #handengraved #watchengraving #watchengraver #エングレーバー...

www.instagram.com

金川恵治 on Instagram: "プラチナのプレートに渦巻模様を彫っているところです。 #watch #watchmaking #horology #handmade #bespoke #keijikanagawa #kcraftworkjapan #2k540 #engraver #engraving #engraved #handengraver #handengraving #handengraved #watchengraving #watchengraver #エングレーハ

3,088 likes, 33 comments - keiji_kanagawa33 on February 12, 2022: "プラチナのプレートに渦巻模様を彫っているところです。 #watch #watchmaking #horology #handmade #bespoke #keijikanagawa #kcraftworkjapan #2k540 #engraver #engraving #engraved #handengraver #handengraving #handengraved #watchengraving #watchengraver...

www.instagram.com

金川恵治 on Instagram: "テンプ受けに渦巻模様を彫っています。 #watch #watchmaking #horology #handmade #bespoke #keijikanagawa #kcraftworkjapan #2k540 #engraver #engraving #engraved #handengraver #handengraving #handengraved #watchengraving #watchengraver #エングレーバー #ウォッチ

1,923 likes, 29 comments - keiji_kanagawa33 on February 5, 2022: "テンプ受けに渦巻模様を彫っています。 #watch #watchmaking #horology #handmade #bespoke #keijikanagawa #kcraftworkjapan #2k540 #engraver #engraving #engraved #handengraver #handengraving #handengraved #watchengraving #watchengraver #エングレーバー...

www.instagram.com

 

[oniemarc]

Those were the posts I saw. Glad someone found them already

 

[rweigel]

Am I mistaken, or does Mr. Kanagawa hand push engraving without power assist? Beautiful tool, beautiful work!

Last year, I made a -15° negative relief 120° graver from an old dentist burr (tool steel, not very hard) and tried it out on cold-rolled copper shet, you could turn it literally arround on the heel and cut very small radii.

 

[pblack]

Mr. Kanagawa's gravers where the inspiration for Alexander's cobra engraver. He said so in one of his Instagram posts. He also posted a series of 3 short clips where he shows one being made. He takes a V-graver and grinds it to shape.

https://www.instagram.com/p/CK3h6A3ld1N/?igshid=YmMyMTA2M2Y=

https://www.instagram.com/p/CLGxeIbFZuP/?igshid=YmMyMTA2M2Y=

https://www.instagram.com/p/CLGzTDLFf2i/?igshid=YmMyMTA2M2Y=

 

[monk]

thanks to u all. that is enough visual to show xactly how these were made. i will try and make one or two out of some grs 120 gravers i have

 

[monk]

Looks like a 120-130 degree v graver with the relief section grinded back

if i remember it was a 150. the negative areas are extreme. i'm going to make at least one. i'm thinking this geometry may buckle under using it in steel. i'll let everyone know how such turns out. as they say, nothing ventured, nothing gained

 

[sam]

I have made these by sharpening a normal 120 from carbide or HSS and then use a blue or grey wheel to grind away the underside. Alexandre and Johnny Oro both sharpen by hand with a micromotor. My way works fine but maybe theirs is better.

Here's a pic of a cobra graver that Alexandre sent to me.

 

[silverchip]

So what if it breaks?? Start over??? We used to grind the bottom out of some line gravers for getting around figures with out bumping into them but that gets expensive if you break it or screw up the retemper. The Cobra looks interesting to use but not easy to get properly ground,

 

[mitch]

I’m having trouble seeing where this graver works so superduperfabulous that it justifies the time and trouble of making one. I don’t even like relieving behind the heel for the graver i use for lettering in silver. And when it breaks, well there’s a half hour grinding everything back and starting completely over.

 

[rweigel]

I made a “composite” graver from an HSS shaft and a carbide head, brazing the pieces with silver solder together. The carbide head is inclined 30° downwards and reaches below the downside of the shaft by about 1.2mm. It was sharpened with the GRS Dual Angle Fixture. Angles: V 120°, face 50°, heels 15° / 0.25mm wide, negative relief -10°. I had planned for -15° negative relief, but I have to modify my hone to reach such angles, as the graver does not touch the grinding wheel at -15°. By the look of it, I’d rather call it Flamingo graver… The inclined, protruding carbide head allows for negative relief faces and saves the labour and training intensive sculpting with the flexible shaft tools.

First tests: It cuts mild steel, though when flare cutting, it feels like the HSS shaft is buckling a bit. I’ll make another one with a 3mm HSS shaft to achieve more stiffness, the present model is 2mm thick. Tests on Copper will follow soon. I’ll attach some pictures.


Cheers, Ralf

 

[monk]

tyvm to you all. i made a very crude version from a 120. the important parts were spot on. made no attempt to make it pretty. in testing, i found, at least for me, i could get the same results from a flat graver. although with the flat, the very fine beginning or end was a bit more difficult. this, like the 120 will probably gather rust or dust.

 

[monk]

I have made these by sharpening a normal 120 from carbide or HSS and then use a blue or grey wheel to grind away the underside. Alexandre and Johnny Oro both sharpen by hand with a micromotor. My way works fine but maybe theirs is better.

Here's a pic of a cobra graver that Alexandre sent to me.

tyvm sam. i used the grs dual angler and some diamond wheels & burs in a micro motor. i found it to be a bit of a bugger to control. mitch was right. for me at least it was a fun xperiment.