Home Education Glazes Materials Video Publications Software Links Main Index
from Linda Arbuckle
Majolica Overview | Majolica Recipes | Majolica Bibliography
Low-Fire Recipes: all are cone 04- 03 unless otherwise noted.
. Majolica White Glaze Cone 03 Cone 05 Frit 3124 65.75 58 F-4 feldspar 17.24 20 EPK 10.82 2 Nepheline Syenite 6.24 7 Tin oxide 5 5 Zircopax 10 10 Bentonite 2 2
.
One part oxide to one part gerstley borate (GB) for materials that melt well at lowfire temperatures: green-blue: 1 copper carbonate + 1 gerstley borate
brown: 1 iron (red, black, ochre, crocus martis, et al.) + 1 gerstley borate. Regardless of raw color of iron, most forms mixed with flux produce brown colors.
blue: Cobalt carb works but may be more prone to spit in firing than stain, and is pale lavender raw, which is very different from the fired dark blue. Using stain works better for many people.
All other colorants and stains mix 1 part colorant + 3-4 parts GB:
blue: Mason Mazerine 6300 or other blue stain. Vivid Blue is refractory: use 4 GB.
green opaque: chrome oxide. NOTE: use of chrome with high tin glazes can cause tin-opacified white ground color to pink. If this happens, replace some of the tin with zirconium opacifier at 1 tin to 1.5 Zr opacifier. Chrome is refractory. Use 4 GB
rusty orange: rutile. Good mixed with harsh yellows to make them more of a golden color. Refractory: use 4 GB.
bright orange- red: Johnson Matthey or Degussa Inclusion stains. Expensive. Wide firing range. May present limited toxic hazard in foodware.
yellow: Mason vanadium 6404 or Drakenfeld praes.41545 (note: many lovely yellows contain LEAD: read the ingredients)
chartreuse: wet mix 3 parts above prepared yellow + 1 part prepared copper mixtures
pink: Mason Alpine Rose 6001 (cool pink, refractory, use 4 GB), Shell, Rose, Clover, or U.S. Pigments Rose S552
purple: Standard K-42 Orchid or Mason Pansy 6385, or Blackberry Wine, or Mulberry.
grey: O'Hommel 2B 9886 or Mason Neutral
turq.:O'Hommel TU96 or Mason Turq. 6288 . Nice with a dash of copper carbonate added.
mint green: Mason Bermuda 6242
black: Mason 6650 black, US Pigments Midnite, or black oxide mix
crimson: Standard K24 Maroon or Mason Crimson 6004. Crimson colors are brighter using frit 3124 in place of gerstley borate, which brushes better using liquid laundry starch or gum solution in place of water.
NOTE: body stains (e.g. Mason 6020 Pink, Titanium Yellow, and Lavender) are too refractory for majolica surface decoration (even with flux) and leave a pigskinned surface.
Many Amaco Velvet underglazes work well right out of the bottle for decorating on top of majolica base glaze. Mist Grey, Jet Black, Rose,Maroon, Leaf Green and 350 Orange all work well. Amethyst, Violet, Real Orange, Lt. Red, Red are bright colors that work. Too refractory to use: Electric Blue, Pearl Grey, Ivory, Hunter Green, Deep Yellow, Straw, Lt. & Med. Pink . Test others.
Amaco now makes a series of colors specifically for majolica decoration, the GDC series of products. Deep Yellow, Violet, Amethyst, and Cantaloupe are favorites. They work well right from the bottle for decoration on top of the base glaze. Prices for small jars are $3.50-5.75, pints $12 -38.00.
Frit 3124 72
flint 10
EPK 12
zircopax 10
For decorating mix 25% stain or oxide with 75% frit 3124 (adjust for refractoriness of oxide or stain) and a tablespoon of liquid laundry starch. Generally fired to 04. Optional pre-fire to cone 018 to harden base glaze for easier decorating.
For black majolica substitute 8% Mason #6650 black (cobalt free) for the zircopax.
Terry says she occasionally does a soft fire to 018 to sinter the glaze and make it less fragile for working on.
Terry sometimes sprays a very thin coat of clear over her majolica. She says this brightens colors.
Batz Majolica
frit 3124 100
barium carbonate 4
EPK 15
zircopax 20-24
Reported to be gas-fireable. Test replacing toxic barium w/0.75 strontium carbonate for 1 barium.
Andersen Majolica
frit 3124 55
ball clay 10
zircopax 8
Majolica
frit 3195 35
frit 3124 44
EPK 3
Kona F-4 feldspar 3
zircopax 4
tin 11
bentonite 2
Walter's Majolica
frit 3124 30
frit 3195 20
frit 3134 20
neph sy 14
EPK 2
zircopax 12
Emmett's White Base
neph sy 20
gerstley borate 30
frit 3195 30
EPK 10
plastic vitrox or
Cornwall stone 15
+ opacifier
Majolica (M.J./Andrea) 04
frit 3124 77
whiting 7
Kona F-4 spar 14
Superpax 15
+Bentonite 1
+Epsom Salts .2
Overglaze colors: 50% stain or oxide, 50% frit 3124, .2 Epsom salts, 1 tsp. Sta Flo liquid starch.
Cochrane Majolica: CM 11/90
Matthias's Majolica cone 05
Frit 3124 83.34%
ball clay 8.33
EPK 8.33
+ rutile 1.11%
Zircopax 11.11
Wichita Doo-Dah Majolica
frit 3124 73.3
ball clay 6.6
flint 13.3
zircopax 6.6
Cone 6 Majolica
gerstley borate 20.68
neph sy 16.29
EPK 11.34
whiting 19.52
flint 32.16
zircopax 25
Add CMC gum if needed to hard-en the surface. Reported to fit cone 10 porcelain fired to cone 6. Use 50 stain/50 frit over. Add CMC or liquid starch for better brushing.
Deep Alkaline Turq. Glaze
frit 3195 19
frit 3110 57
gerstley borate 10
EPK kaolin 9
copper carbonate 5
May run if very thick. Pearly thinner, deep, watery turquoise thicker. Crazes. Soft glaze. Great over colored slips.
Faux Lead Strontium Base
frit 3110 30.6
Gerstley borate 33
EPK 26
flint 5
wollastonite 3
strontium carb. 2.5
Color response similar to lead green and amber. No lead. Colors below look good over slips.
amber: + 5-7% burnt umber
transp. grass green: + 4% copper carbonate
Lee's 03 Clear
gerstley bor. 26
lithium carb 4
kaolin 10
Good color response. Tends to craze.
Val's Clear: frosty thicker
Shiny Clear
gerstley borate 55
EPK 30
flint 15
Brushes well. Thin well to dip.
Pete Pinnell 03 Basic Clear
Frit 3124 70
strontium carb. 10
neph sy 10
+ bentonite 2
dash Epsom salts
Apply thinly.
Slip color suggestions
white: 5% zircopax
deep green: 3% chrome + 3% copper carb.
yellow: 10% yellow body stain, e.g. Mason 6485 titanium yellow
blue: 2% cobalt carbonate
pink: 12-15% pink body stain, e.g. Mason 6020 pink. Can be toned a bit w/2% rutile if desired.
black: 12-15% black stain or black oxide mix
03-04 Base Slip (white)
ball clay 40
kaolin 20
neph sy 15
talc 15
frit 3124 10
Black Oxide Mix
20 iron oxide
15 cobalt
10 manganese
5 chrome
Mix by weight and use like a stain.
Terracotta: Arbuckle
Redart 50
XX Saggar 20
fireclay 20
flint 12
talc 5
spodumene 3
neph sy 5
very fine grog 2 - 8
barium carb. .5
Barium is needed to bind soluble salts and thus prevent scumming.
Pete Pinnell's Real Authentic Lip-Smackin' Smooth Easy Terra Sigellata:
color suggestions added to 1 cup liquid sig:
white = + 1 tsp. Zircopax or tin.
off white = + 1 tsp. titanium diox.
green = + tsp. chrome oxide
blue = + tsp. cobalt carb.
black = + 1 tsp. black stain
purple = + 1 tsp. crocus martis
In a 5 gal. bucket put 28 lbs (28 pints or 3 gal.) of water. Add 14 lbs. dry clay. XX sagger works well for white base, RedArt for red. Add enough sodium silicate to deflocculate (a few tablespoons). Allow to settle. Overnite is average. Less plastic red clays (such as RedArt or fire clay may require only 6-8 hours, while very plastic clays like XX Sagger or OM4 ball may take up to 48 hours). Remove top - w/o disturbing the mixture (syphon off). This is the sig. . Throw the rest away. Do not reclaim.
Terra sig is best when the specific gravity if about 1.15. Useful range is 1.1-1.2. Specific gravity is measured by weighting out 100 gms of water, marking the volume, and weighing the same volume of the sig. Divide the weight of the sig by 100. If too thin evaporate. If too thick allow to settle longer. Apply sig to bone dry greenware and buff. Pete uses "patinas" of 1 gerstley borate + 1 colorant as a thin wash over bisqued sigs, applied and rubbed off. Works on textured areas.
NCECA 77 Erie Village Square, Suite 280 Erie, Colorado 80516-6996 866-CO NCECA (266-2322) Toll-Free 303-828-2811 Local 303-828-0911 Fax
National Council on Education for the Ceramic Arts. Non-profit National/international organization. Sponsors annual conferences around the U.S. (highly recommended!), publishes the NCECA Journal & annual members directory, sponsors a biennial juried Clay National show in conjunction with the conference. Links to other clay resources. NCECA World Wide Web home page:
www.nceca.net
Excellent glaze calc and data program that runs under Hypercard on a Macintosh. See Jan. '92 Ceramics Monthly for review of features. Ordered directly from the author for $60., include name, address, and phone # and type of Macintosh. Order form and more info at: HyperGlaze.com
E-mail Richard about HG at HyperGlaze@sbcglobal.net
Information about the organization and pointers to other electronic resources.
Richard Burkett's San Diego State University World Wide Web site of ceramics information, ClayArt archives, GlazeBase glaze data base, and more.
ceramics.sdsu.edu
Low-fire
Ceramic process, materials
General trouble-shooting
Art philosophy, aesthetics, and psychology
Design
back to the top Home Education Glazes Materials Video Publications Software Links Main Index
back to the top