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LinR

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Posts posted by LinR

  1. A group of potters I belong to used to do a raku firing as a fund raiser.  The members would make items in advance.  We would haul all our equipment out to the site of a local fair and  the public would buy a piece or 2, glaze under instruction of a member.  The pieces would be dried on the lid of one of the 2 kilns we had going and put into the fire when ready.  I don't think we ever had an explosion.  Lin

  2. Thank you everyone for the info you have given me.  Who knew that someone in the UK would know Richler Pass?  But as we are in BC that is a good probability.  All this information is very useful and will help us sort out what we should keep and what goes.

    Yes we make our own glazes but as a group and individual members do not have access to these chemicals.  I suspect we will want to get rid of anything that is Toxic.  Unwanted chemicals will be offered to members who do make their own glazes in their own studios and then to other organizations which have pottery classes.

    Thank you so much,

    Lin

  3. I belong to a organization of potters that has been in existence for about 55 years.  Over that time retiring members have donated their chemicals to the Club and some of these have been used and some have been shoved to the back of the cupboards.  We work in a studio in a public building.  As we are going through a big reorganization of the studio we want to identify the uses of some of these materials we have been given and work out if they are of use to us or if we need to find a new home for them.  I will list the materials and if anyone can help me as to their use I would greatly appreciate that.  Or faling that is there a site I could consult?  We use glazes that fire to Cone 6.

    Aluminum oxide

    Barnard clay

    Black iron oxide

    Burnt sienna

    Burnt umber

    Calcium carbonate precipitated

    Chromite

    CMC gum

    Iron ferrite

    Kaolin calcined

    Kaolin Tile 6

    Kaolin Pioneer

    Kona Feldspar

    Lincoln fire clay

    Magnesium oxide

    Monarch china clay

    Mullite

    Red Art Clay

    Richler Pass Ash

    Saggar clay

    Tennessee Ball Clay

    Thompson China Clay White silica - coarse

    White silica - coarse

    Many thanks, Lin

     

  4. I  belong to a group that has used the following recipe for Red Tenmouku  for something like 30 years.  It has been reliable at cones 5&6,  electric and gas and on the various clays we use.  As we all know the price of lithium has gone sky high and a 5 gallon bucket will now cost in the region of $400.  Is there a less costly ingredient that we can use in the place of the lithium or can someone recommend an equally reliable Tenmouku for mid fire?

    Red Tenmouku

    Cornish stone         73.5

    Whiting                         9.6

    Colemanite                 3.3

    Red Iron Oxide          9.1

    Lithium                           4.5

    Thanks for your help.

    Lin

  5. Is the unglazed area at the bottom  just a narrow band?  If so it is usual not to glaze a pot right down to the bottom.  It is hard to cover a large unglazed spot as it is hard to make the glaze stick.  As above, if you did not make the pot you have no idea what temperature to fire it.  If it is just a narrow band at the bottom and if it rally bothers you I would use a permanent marker as close to the colour of the vase as possible on the unglazed clay.  Lin

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