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sv: dry mixing and seiving.

updated sat 24 feb 01

 

Alisa og Claus Clausen on fri 23 feb 01


Dear Charles,
All right, now I understand that the respirator is on! Good. There is =
reason to sieve some of the dry materials, especially if you a specific =
hiccup in your glaze. For example, Tom Buck advised me to seive my =
Colemanite, because the mines (Turkish) where it is taken from (and =
where my supplier gets it from) often are contaminated with gypsum. =
Sieving dry materials selectively could improve certain glaze results, =
as the one (of probably many) example above illustrates.
So, until/if you develop a problem and you think it traceable to impure =
raw materials, sieving your wet glazes could be good enough. I have some =
materials that get lumpy so I seive them if I can and I weigh and then =
disolve my Cornish stone because that is always very rocky. But in =
general, I mostly sieve only my wet glazes. =20

Best regards,
Alisa in Denmark