No-one likes general adverts, and ours hadn't been updated for ages, so we're having a clear-out and a change round to make the new ones useful to you. These new adverts bring in a small amount to help pay for the board and keep it free for you to use, so please do use them whenever you can, Let our links help you find great books on glass or a new piece for your collection. Thank you for supporting the Board.

Author Topic: Making batch in the kitchen  (Read 1951 times)

0 Members and 1 Guest are viewing this topic.

Offline Frank

  • Author
  • Members
  • ***
  • Posts: 9453
  • Gender: Male
    • Glass history
    • Europe
    • Gateway
Making batch in the kitchen
« on: May 20, 2008, 08:54:53 AM »
Take 100 parts playground sand, 35 parts washing soda and 15 parts potassium carbonate - mix and grind together well in the trusty pestle and mortar. About 15 mins of grinding.

Prepare your kiln - A couple of flowerpots, one inside the other, fill with crushed barbecue charcoal.

Embed in this a ceramic crucible with lid and put you mixture in it. Cover and add more charcoal to cover the crucible.

Microwave on full power for 30-40 minutes.

Take care as it will be extremely hot, well over 1,000ยบ, when you remove it. Allow it cool and retrieve your batch. >:D

Seen on one of those weird late night TV science programs.


Support the Glass Message Board by finding a book via book-seek.com


Offline Anne

  • GMB Tech Support Manager & "Board (never bored) Dame"
  • Global Moderator
  • Members
  • *
  • Posts: 13268
  • Gender: Female
  • I has a stick to poke the server with yes!
    • Glass trinket sets
    • Cumbria England
    • Glass Trinket Sets
Re: Making batch in the kitchen
« Reply #1 on: May 20, 2008, 04:10:23 PM »
Ooooerrr.... Frank, should this come with a big safety warning and a disclaimer?!  :o

Support the Glass Message Board by finding glass through glass-seek.com


Offline Frank

  • Author
  • Members
  • ***
  • Posts: 9453
  • Gender: Male
    • Glass history
    • Europe
    • Gateway
Re: Making batch in the kitchen
« Reply #2 on: May 20, 2008, 05:26:01 PM »
All the guy wore was safety glasses and oven gloves to take it from the oven. It can be left to get cold once the charcoal stops burning. Don't expect useful quantities of glass, just a fun demonstration of how glass is made from raw materials. You could add to the gun by adding a bit of uranium oxide to get you know what - of course you might find that a tad difficult to source but... it could be extracted from sea-water to complete the home technology class.

Support the Glass Message Board by finding a book via book-seek.com


Offline Anne

  • GMB Tech Support Manager & "Board (never bored) Dame"
  • Global Moderator
  • Members
  • *
  • Posts: 13268
  • Gender: Female
  • I has a stick to poke the server with yes!
    • Glass trinket sets
    • Cumbria England
    • Glass Trinket Sets
Re: Making batch in the kitchen
« Reply #3 on: May 20, 2008, 05:30:22 PM »
Hmmmm somehow the idea of uranium oxide in a microwave worries me somewhat...  can't think why!  :-X

Support the Glass Message Board by finding glass through glass-seek.com


Offline Frank

  • Author
  • Members
  • ***
  • Posts: 9453
  • Gender: Male
    • Glass history
    • Europe
    • Gateway
Re: Making batch in the kitchen
« Reply #4 on: May 20, 2008, 07:36:31 PM »
No reason to worry Anne, the amount of sea-water you would need to process makes it a wee joke  ;D - mind you, did you notice my dyslexic fingers in "the gun by adding a bit of uranium oxide" should of course have been fun.

There is probably more danger from the microwave leakage over the 30 minute period.

Support the Glass Message Board by finding a book via book-seek.com


Offline aa

  • Glass Professional
  • Members
  • ***
  • Posts: 1835
    • http://www.adamaaronson.com
Re: Making batch in the kitchen
« Reply #5 on: May 20, 2008, 08:19:44 PM »
I love reading all those warranty disclaimers and safety notices that you find nowadays when you buy something new! The bland end starts something like ... in the instructions for a kettle - caution there is a danger of scalding from hot liquids - always handle boiling water (that you just boiled in our kettle, which is designed for boiling water - hot stuff you know) with care. And with a new digital camera - danger - if you drop this on the floor you may cause damage ( to the floor or the camera) ..... and half way through, I always think " why on earth are they saying this...who on earth would be so incredibly XXXxX as to do that!"

......I'm beginning to get the drift....the penny has dropped! Now I know why they come up with all those far-fetched scenarios! ;D
Hello & Welcome to the Board! Sometimes my replies are short & succinct, other times lengthy. Apologies in advance if they are not to your satisfaction; my main concern is to be accurate for posterity & to share my limited knowledge
For information on exhibitions & events and to see images of my new work join my Facebook group
https://www.facebook.com/adamaaronsonglass
Introduction to Glassblowing course:a great way to spend an afternoon http://www.zestgallery.com/glass.

Support the Glass Message Board by finding glass through glass-seek.com


Offline mrvaselineglass

  • Author
  • Members
  • ***
  • Posts: 515
    • http://www.vaselineglass.org
Re: Making batch in the kitchen
« Reply #6 on: May 20, 2008, 09:47:20 PM »
Um.....what about the burning charcoal?  I would think that could give off carbon monoxide.  not a good thing to have oozing out around the door seal of the microwave and into the house.  also, it would cause enough smoke, I would think, to set off smoke detectors. 

Support the Glass Message Board by finding a book via book-seek.com


Offline aa

  • Glass Professional
  • Members
  • ***
  • Posts: 1835
    • http://www.adamaaronson.com
Re: Making batch in the kitchen
« Reply #7 on: May 20, 2008, 09:50:34 PM »
Um.....what about the burning charcoal? 

so that's what they mean by a combination microwave with grill ;)
Hello & Welcome to the Board! Sometimes my replies are short & succinct, other times lengthy. Apologies in advance if they are not to your satisfaction; my main concern is to be accurate for posterity & to share my limited knowledge
For information on exhibitions & events and to see images of my new work join my Facebook group
https://www.facebook.com/adamaaronsonglass
Introduction to Glassblowing course:a great way to spend an afternoon http://www.zestgallery.com/glass.

Support the Glass Message Board by finding glass through glass-seek.com


Offline Frank

  • Author
  • Members
  • ***
  • Posts: 9453
  • Gender: Male
    • Glass history
    • Europe
    • Gateway
Re: Making batch in the kitchen
« Reply #8 on: May 20, 2008, 10:00:38 PM »
To hot for smoke.

Support the Glass Message Board by finding a book via book-seek.com


Offline Ivo

  • Author
  • Members
  • ***
  • Posts: 8170
  • Gender: Male
Re: Making batch in the kitchen
« Reply #9 on: May 20, 2008, 10:02:46 PM »
is it covered under the house insurance?

Support the Glass Message Board by finding glass through glass-seek.com


 

SMF spam blocked by CleanTalk
Look for glass on
ebay.co.uk
Visit the Glass Encyclopedia
link to glass encyclopedia
Look for glass on
ebay.com (us)
Visit the Online Glass Museum
link to glass museum


This website is provided by Angela Bowey, PO Box 113, Paihia 0247, New Zealand