mel jacobson on tue 25 may 10
i have been lapping my entire life.
i love it. but, it can raise hell at times.
my starting point would be to use one glaze, then
color it several ways.
start with dark,
move to lite.
the reason i started with rhodes 32 was clear, it lapped well.
it shows colors through.
i use a base glaze of rhodes with some rutile, and a touch
of iron. very lite oatmeal.
i make a dark iron/ochre base, that shows through brown specs.
i have a rich cobalt/chrome mix that turns light aqua. but, used alone
it is crap. it is an underglaze. then i have mel's orange as a topper.
so.
i count the seconds that a pot is in the glaze bucket.
in japan we used a second hand on a big old clock.
dip/1 2 3 out.\
second dip 1 2 out.
third dip. 1 out.
i never have the pot in the glaze for more than a count of nine.
(and depending how thick your glaze, and where you bisque fire,
it all changes.) i bisque to 08 because i want more suck...phluch.
06-05 is much denser. you would have to thicken your glaze
a bit.
we used many lapps with the temmoku study. same theory, count
the seconds...chart it if you are looking for repeatability.
and, use a simple gauge to determine the viscosity of the glaze.
i use a dowel rod with a gob of solder on the end...make slash
marks...find what you want or add water til the dowel
sinks to your special mark. or you can buy an expensive hygrometer
and play scientist. but, a pencil with a gob of metal epoxied to the
bottom works great. sort of like fishing with a bobber.
some glazes cannot be covered, for example shino hates it.
and you will hate the pots after they come from the kiln.
some glazes love lapping. you just have to try.
at hopkins high we had one glaze...one only. but we had
hundreds of potential glaze coverings with pots...this over that,
that over this, then make up a new color...the ideas are endless.
look at my website. clayart page.
the big bowl. look at all the lapps, blue, brown, orange..it is endless.
i just adore texture and movement in my glazes. the more the better.
so, this is made to order. if i take a common glazed pot from the kiln
sharlene says `my god, have lost all sense of reason?` one has to please
the critic over your right shoulder. and, she never misses a great pot.
`there you got one right.`
most of you have been there, more than once.
mel
from: minnetonka, mn
website: http://www.visi.com/~melpots/
clayart link: http://www.visi.com/~melpots/clayart.html
new book: http://www.21stcenturykilns.com
alternate: melpots7575@gmail.com
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