Difference Between Fine China, Bone China, And Porcelain

posted in: Porcelain | 71

By Debra Kelly

Bone china, fine china, porcelain: They can look very similar, but there’s a definite difference in what they’re made from. Bone china is, as its name suggests, made from bone—cow bone in particular, although in rare cases you could be eating off of a plate made from a dead person. The same manufacturing processes are used in making fine china, but without the bone content. Porcelain is also created in much the same way, but it’s fired at a higher temperature and the end result is much harder.

Bone china is, as its name suggests, made from cow bone. The bone is finely ground into bone ash, and it is then mixed with feldspar, ball clay, quartz, and kaolin (a type of clay). The quality of the finished product is based on how much bone is in the mixture; a high-quality bone china should contain at least 30 percent bone and can go as high as 40–45 percent.

Porcelain has been around since around A.D. 620; more modern methods and mixtures started to be used around A.D. 1279. Originating in China, the earliest porcelains used kaolin (a type of clay) and pegmatite (a type of granite). Early European versions used clay and ground glass. In 1707, German manufacturers started using feldspar instead of glass in a process that continues today. In today’s porcelain, silica is also added to the raw ingredients. The raw materials are finely ground, cleaned, formed in a mold, and then fired.

The firing process is what creates either porcelain or fine china. If the temperature is high—around 1,455° Celsius (2,650° F)—the finished product is much more durable and is known as porcelain. If it’s fired at a lower temperature—around 1,200° (2,200° F)—it’s known as fine china. Fine china is much softer than porcelain, making it much more suitable for applications such as plates and cups. Porcelain is strong enough and durable enough that it’s suitable for a wide range of industrial applications such as electrical insulators.

Bone china undergoes two firing processes. The first causes the product to shrink, and about 20% of the pieces that are made will crack and break at this stage. The second firing happens after the piece is glazed, and melts the glaze into the piece. Those that don’t crack or break during this stage are then decorated with their final patterns. Many pieces are hand painted or sprayed, though in some cases decals can also be applied.

At a glance, it’s easy to tell the difference between bone china and fine china if you know what you’re looking for. The addition of bone ash gives bone china a warm color, while fine china will be a brighter white. If you hold the china up to the light, you’ll see that bone china has a translucent quality compared to fine china. Porcelain is a much more durable material, and is much harder than either type of china.

But then there’s the creepier side of china. American artist Charles Krafft has found that it doesn’t have to be cow bone that’s used for the bone component in bone china. The current mixture used for British bone china was created by a man named Josiah Spode (Spode is still a major manufacturer of bone china in the UK), and Krafft decided to simply swap out the cow bone ash in Spode’s recipe for human bone ash, retrieved from a crematorium and finely milled. Calling his new product “SPONE,” you can still commission him to create a special memento made of your loved ones.


Follow admin:


71 Responses

  1. Avatar

    Occasionally methadone ends up on the black market.

    It could be stolen from a pharmacy, swiped from an individual or a patient may market their methadone.

  2. Avatar
  3. Avatar

    Take this medicine by mouth, intramuscular shot or subcutaneous injection usually on a daily
    basis, adjusted by reaction.

  4. Avatar

    Tuberculosis can additionally occur individually and also
    is viewed a lot more regularly in individuals addicted to heroin.

  5. Avatar

    Receptor– A molecular framework on the surface that precisely expecteds a certain substance
    resulting in a certain physical impact.

  6. Avatar
  7. Avatar

    Über 300 geile Amateur Models mit geile Votzen und Titten geil und hart gefickt in alle
    Löcher auf den schärfsten Reality Sexgeschichten, die du jeh gesehen hast.

  8. Avatar
  9. Avatar
  10. Avatar
  11. Avatar

    Since in case you leave one of these simple 3
    out it could previously lead to you not succeeding inside your journey to have rid of your acne for

  12. Avatar

    Picking between beard styles needs you to analyze your facial features,
    balancing the shape of your facial hair to the lines of the face itself.

  13. Avatar

    Pretty section of content. I just stumbled upon your site and in accession capital
    to assert that I get in fact enjoyed account your blog
    posts. Any way I’ll be subscribing to your feeds and even I achievement you
    access consistently quickly.

  14. Avatar

    Acne is one particular problems inside our living that nobody
    could prevent It triggers a lot of discomfort and pain.

  15. Avatar

    I’m not that much of a online reader to be honest but your sites really nice,
    keep it up! I’ll go ahead and bookmark your website to come back
    later. Many thanks

  16. Avatar
  17. Avatar
  18. Avatar

    That has been when the Treatment Treatment I used to be somewhat picky initially was introduced by my neighbor
    however in a couple of weeks the scar scars started definitely fading.

  19. Avatar

    The substances including salicylic acid are employed in the remedy, they are examined and certainly will struggle with
    acne, since.

  20. Avatar

    To trim your mustache, comb it directly down and utilize the beard trimmer or scissors to
    cut from the nose to the edge of the mouth on one side, then duplicating on the other side.

Leave a Reply

Your email address will not be published. Required fields are marked *

Time limit is exhausted. Please reload the CAPTCHA.