Where can we buy foam blocks that can be carved

Gemstones of a special kind

January 10, 2014 - 6:23 pm

 · #1
The year has already started well, as you can see in the picture.
After that, I looked like a mate after the shift and my place of work made me cry. Incidentally, the cabs are a maximum of 3mm thick and have a diameter of 12.5 mm.
uhu
Attachments to this post
Title:DSC_0036.jpg
Posts: 7537
Involved since: 11 / 2012

January 10, 2014 - 6:42 pm

 · #2
Make-up in the trailer? Is the coal already completely petrified or is it still staining a little?

Also an idea that I didn't know yet.

Good luck for!

January 10, 2014 - 7:01 pm

 · #3
steinfroilein,
this is the best anthracite charcoal, hard as amber - nothing rubs off. The stuff is just incredibly brittle. That's why I basted the cabs with 1mm jadeite plates, otherwise I wouldn't have been able to grind and carve them at all.
uhu
By the way: I not only grind - I also sell stones ...
Posts: 7537
Involved since: 11 / 2012

January 10, 2014 - 7:12 pm

 · #4
Once again there was nothing with make-up and I already sensed a gap in the market.

But a little capsule, you have to say!
Posts: 1583
Involved since: 07 / 2008

January 11, 2014 - 8:43 am

 · #6
In contrast to anthracite coal, Gagat or Jet are easy to grind and carve and easy to polish. What the eagle owl had there is much more brittle and therefore difficult to work with. I'm wondering how long it will stay in the piece of jewelry without damage.
Posts: 17706
Involved since: 01 / 2009

January 11, 2014 - 9:42 am

 · #7
Quote written by gemstone
I'm wondering how long it will stay in the piece of jewelry without damage.

as long as the coal doesn’t have to hit the edge of the table all the time and be left alone, it can withstand a lot. I'm going to hang up my earrings with coal in them - orschinoool ausm Pott from Schalke They are now a good 20 years old, have already gone through the silver bath and ultrasound several times, only re-glued once, and in between polish up. And still look perfect.
Attachments to this post
Title:Stick hanger coal.jpg
Tradition is preserving the fire and not worshiping the ashes (Uli Haass after Mahler)

Cufflinks also v. Anke: www.morent-berlin.com
Posts: 7537
Involved since: 11 / 2012

January 11, 2014 - 11:29 am

 · #8
@ Paw: Looks very chic too. :Super:

Two young goldsmith customers were here yesterday, they inspected the iridescent lava in the garden and we gave both of them a small piece as a present. Let's see what they work out of it ...

There was more of lava these days. This morning a commissioned set was ready. Photo attached.
Attachments to this post
Title:Made to measure Lava.JPG
Posts: 17706
Involved since: 01 / 2009

January 11, 2014 - 11:37 am

 · #9
Trend oracle or not. Lava shouldn't be underestimated. Last year alone I sold 19 necklaces and 10 pairs of earrings (pendants and studs). In addition to foam coral and smoky quartz, it is the best-selling stone for me.
Tradition is preserving the fire and not worshiping the ashes (Uli Haass after Mahler)

Cufflinks also v. Anke: www.morent-berlin.com
Posts: 2123
Involved since: 10 / 2010

January 11, 2014 - 3:21 pm

 · #10
I've also worked on anthracite. It's really a dusty affair, but can be done well with my manual operation. The unstable metallic sheen that occurs during grinding is interesting. This is probably due to freely moving electrons enriched on the surface, which unfortunately redistribute themselves very quickly in the stone.

Anthracite in combination with carbon - hmm very tempting! : mrgreen:

January 11, 2014 - 4:36 pm

 · #11
steinfroilein,
black flint isn't bad either, but very tedious to work with. Drilling takes forever and polishing takes even longer.
uhu
Attachments to this post
Title:DSC_0034.jpg
Posts: 7537
Involved since: 11 / 2012

January 11, 2014 - 4:46 pm

 · #12
@ Eagle owl: not bad either. Great. :Super:

And if paw is already oracle in the direction, then I'm curious about Aquarius' idea of ​​"anthracite in combination with carbon".
Posts: 885
Involved since: 03 / 2012

January 11, 2014 - 5:06 pm

 · #13
Quote written by Aquarius
This is probably due to the freely moving electrons enriched on the surface, which unfortunately are redistributed in the stone very quickly.


In my opinion, the metallic sheen is more due to a wafer-thin coating of graphite dust. It looks metallic silver. And as a lubricant, it also sticks. Was the topping always gone after washing?

@Uhu

I love flints, great piece

Lis
Posts: 2123
Involved since: 10 / 2010

January 11, 2014 - 5:54 pm

 · #14
Graphite coating would go very well with the behavior of the sanding dust. But strangely enough, the metal sheen disappears by itself without rubbing. Incidentally, due to the low sanding hardness, I sanded my anthracite dry on fine emery and then polished it dry on denim. It went very well, except for the black dusting. The metallic effect did not occur during the polishing process. The final surface is really impressive.

Anthracite cannot be grasped due to its cheekiness, so stick?

Black flint is of course also great, but as our eagle owl remarked very, very correctly: extremely tough to work with. You can then grasp it safely, just like basalt - another very interesting variant. Of course, black CZ is also an option here - a very ... diamond-shining material!

Black blast furnace slag is also up for debate. However, there is a risk of hidden bubbles that could come to light at any time during grinding. At the top it is also a very stable, good glossy material.

All alternatives to the classic black onyx.
Posts: 8090
Involved since: 08 / 2006

January 11, 2014 - 5:56 pm

 · #15
Paw, are those your fangs?

Look chic, great shape! I only ever used gagat as coal bricks. I bought a whole block once. He's saved my life a few times when there wasn't a suitable Onix around.
Greetings, Ulrich - goldsmiths since 1967

CAD, rapid prototyping, 3D printing + milling, foundry, laser welding see 1993, http: //www.wehpke.dehttps: //www.facebook.com/STL.Direkt/
http://www.goettgen.de/schmuck…ic_id=3502