Jump to content


Photo

B Mix Cone 5-6

bmix cone5 cone10

  • Please log in to reply
6 replies to this topic

#1 RonMello

RonMello

    Newbie

  • Members
  • Pip
  • 3 posts
  • LocationMiddleboro MA

Posted 21 February 2014 - 03:50 PM

I recently included a small piece of bmix cone 5 in a wood kiln firing to cone 11. It came out and looked fine. Is this normal?



#2 neilestrick

neilestrick

    Neil Estrick

  • Members
  • PipPipPip
  • 2,434 posts
  • LocationGrayslake, IL

Posted 21 February 2014 - 07:44 PM

Are you sure it was Bmix 5 and not regular Bmix or Bmix wood fire?


Neil Estrick
Kiln Repair Tech
L&L Distributor
Owner, Neil Estrick Gallery, LLC
www.neilestrickgallery.com

neil@neilestrickgallery.com

#3 RonMello

RonMello

    Newbie

  • Members
  • Pip
  • 3 posts
  • LocationMiddleboro MA

Posted 22 February 2014 - 11:36 AM

Hi Neil, No, I'm sure it was 5. I made a dozen small salt shakers and they were all marked cone 5.

(I mark each piece with the clay I use because I use several) I also use cone 10 and cone 10 for wood..

I actuallmade these before I hade the cone 10 in the studio..



#4 neilestrick

neilestrick

    Neil Estrick

  • Members
  • PipPipPip
  • 2,434 posts
  • LocationGrayslake, IL

Posted 22 February 2014 - 12:44 PM

It seems odd if that's the case. Bmix 5 should vitrify at cone 5-6, so by 11 it should be having some issues. I'd run an absorption test of a bar fired at cone 5 and see just how tight it really is. How big was the piece? A very small little cup may not show slumping problems like a larger piece.


Neil Estrick
Kiln Repair Tech
L&L Distributor
Owner, Neil Estrick Gallery, LLC
www.neilestrickgallery.com

neil@neilestrickgallery.com

#5 Mark C.

Mark C.

    Advanced Member

  • Members
  • PipPipPip
  • 2,627 posts
  • LocationNear Arcata Ca-redwood rain forest

Posted 22 February 2014 - 01:56 PM

Maybe it was in a cooler spot in kiln??

Mark


Mark Cortright
www.liscomhillpottery.com

#6 Biglou13

Biglou13

    Advanced beginner pottery, Advanced in other art

  • Members
  • PipPipPip
  • 878 posts
  • LocationNorth Florida

Posted 24 February 2014 - 02:50 AM

Helios (highwater) lists stats, 1%@ cone 7, >1 % @ cone ten.

I've seen other "porcelain" based clays have similar small range of vitrification.

Since the b-mix is a secret, No one knows, however mfgr's description indicate "porcelain like texture", maybe it has porcelain in it.

I've heard of people complaints of cracking while drying, with this clay. To me, it sounds very similar to porcelaineous body issue.

So is I think it is possible you fired your cone 5 clay to cone 10. And still have functional body. Maybe?

But vitrification rules differ from range of absorption, to range of density.

I've also read many commercial clays are designed to be under fired, to prevent slumping among other things.

I know of people that fire cone 10 clays to the 6-7 range, the pieces are functional and don't leak, functional in practical sense.....
I'm running some absorption tests on a few of these clays.

Speculation to follow:
The b miix body may have both porcelain and gold art in large percentages
Non pocelain bodies would most likely have failed at plus 5 cones.
Caution big brother is watching.
The beige is blinding!!!!!!
The middle of the road is boring

The true sign of intelligence is not knowledge but imagination.
-Albert Einstein

#7 DarrellVanDrooly

DarrellVanDrooly

    Member

  • Members
  • PipPip
  • 27 posts
  • LocationDenver, Colorado

Posted 02 March 2014 - 06:57 PM

Ive fired ^5 B-mix in a ^9 wood firing with no problems whatsoever so I don't see why it couldn't withstand a ^11 wood firing.


Derek Von Drehle - Bearded Lady Studio

Functional and bizarre porcelain works

www.derekvondrehle.com

darrelspottery@gmail.com 






Also tagged with one or more of these keywords: bmix, cone5, cone10

0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users