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Most Commonly-Used Materials

The charts below show the most commonly used materials in Glazy. As you move up, higher amounts are used, while moving right the ingredients are used more often. By stocking your lab with the most common materials, it’s more likely that you’ll be able to make most of the recipes you find on Glazy.

For more information see “Stocking Your First Glaze Lab”

Mid-Fire Base Ingredients

Common Mid-Fire Additives

This chart shows the most commonly-used base ingredients in mid-fire glazes. Both axes use log scale so that names are not obscured.

Mid-Fire Base Ingredients Data

Material% of Recipes Used InTotal % Amount Used
Silica80.90%349100
Kaolin68.21%203915
Whiting49.56%135978
Nepheline Syenite35.22%214529
Potash Feldspar30.09%195762
Ferro Frit 313428.22%103004
Gerstley Borate21.50%72844
Dolomite20.66%44485
Zinc Oxide22.16%34146
Talc17.87%35968
Wollastonite17.48%52784
Soda Feldspar15.39%116153
Ball Clay12.18%36742
Lithium Carbonate8.20%7676
Strontium Carbonate8.02%20174
Ferro Frit 31247.35%33713
Spodumene5.58%18682
Barium Carbonate5.40%21749
Bone Ash3.87%5716
Magnesium carbonate3.72%6758
Ferro Frit 31102.88%16735
Calcined Kaolin2.71%6111
Ferro Frit 31952.69%12879
Cornwall Stone2.05%15071
Colemanite1.38%3748
Wood ash1.14%6501
Redart1.08%7057
Crecer Frit 804 /20120.96%4320
Johnson Matthey Frit 1690.91%2823
Calcium borate frit0.69%1652
Petalite0.66%2367
Mixed wood ash0.56%6074
Borax0.54%1334
Albany slip0.51%4868
Alberta Slip0.45%4243

Mid-Fire Base Ingredients Shopping List

Based on the most commonly-used ingredients chart above, here is an example shopping list for around $500.

Nepheline Syenite is used a lot and can be your primary source of alkaline fluxes, although it’s also good to have some Potash and Soda feldspar. Ferro Frit 3134 would be the primary source of boron, although the list adds other sources like Gerstley and frits for convenience. Lithium sources are extremely expensive these days, so you might want to skip them entirely. You can make Calcined Kaolin yourself by putting regular kaolin in your bisque kiln.

NameAmount (lbs)Unit PriceSubtotal
Silica (325 mesh)50$0.85$42.50
Kaolin (EPK)50$0.62$31.00
Whiting (325 mesh)50$0.37$18.50
Nepheline Syenite (A-270)50$0.70$35.00
Potash Feldspar (Mahavir)30$0.89$26.70
Ferro Frit 313450$2.51$125.50
Gerstley Borate (substitute)2$5.38$10.76
Dolomite (Dolocron)10$0.73$7.30
Zinc Oxide (Maximo 910)10$5.30$53.00
Talc10$1.00$10.00
Wollastonite10$0.77$7.70
Soda Feldspar20$1.20$24.00
Ball Clay (OM-4)10$0.69$6.90
Lithium Carbonate1$69.57$69.57
Strontium Carbonate1$3.11$3.11
Ferro Frit 31241$3.08$3.08
Spodumene (Substitute)1$14.83$14.83
Barium Carbonate1$2.55$2.55
Magnesium carbonate2$6.26$12.52
Ferro Frit 31101$4.92$4.92
Ferro Frit 31951$5.26$5.26
TOTAL$514.70

(Prices are from Laguna/Axner, but relative prices should be consistent amongst different suppliers.)

Mid-Fire Additives

The chart below shows the most commonly-used additives in mid-fire glazes. Bentonite is the most frequently used, but usually used in small amounts of 2%, while Red Iron Oxide is the most used by percent amount. Chrome Oxide is used quite frequently, but often in very small amounts.

Common Mid-Fire Additives

This chart shows the most commonly-used additives in mid-fire glazes.

Mid-Fire Additives Data

Material% of Recipes Used InTotal % Amount Used
Bentonite20.55%7490
Red Iron Oxide15.39%16291
Copper Carbonate13.62%6865
Rutile12.81%11314
Titanium Dioxide9.86%8713
Cobalt Carbonate9.42%3065
Tin Oxide7.31%6292
Zircopax, Ultrox5.71%7633
Chrome Oxide5.18%697
Cobalt Oxide4.12%1010
Black Copper Oxide3.51%1384
Manganese Dioxide3.17%3915
Stain1.92%1892
Silicon carbide1.51%442
Black Nickel Oxide1.37%394
Yellow Iron Oxide0.74%873
Bone Ash0.53%512
Yellow Ochre0.53%350
Black Iron Oxide0.51%426
Epsom salts0.48%77
Manganese Carbonate0.37%582
Green nickel oxide0.36%115
CMC Gum0.32%74
Ilmenite0.23%126
Nickel Carbonate0.16%49
Soda Ash0.14%154
Spanish Red Iron Oxide0.09%66

Mid-Fire Additives Shopping List

Based on the above chart, below is a sample shopping list costing about $250. Multiple sources of iron are included because they’re fairly cheap, as well as two sources of cobalt (oxide & carbonate) because they are used so frequently, but you could always go with a single source and use material substitution. For silicon carbide you could go with a 300-600 mesh for lava glazes, 1000-1200 mesh for localized reduction glazes, or just leave it out if you’re not interested in those effects. I listed natural bone ash but you could go with the more expensive synthetic.

NameAmount (lbs)Unit PriceSubtotal
Red Iron Oxide27.25/lb$14.50
Rutile214.33/lb$28.66
Titanium Dioxide16.05/lb$6.05
Zircopax, Ultrox25.58/lb$11.16
Bentonite21.09/lb$1.09
Copper Carbonate16.23/¼lb$24.92
Tin Oxide¼32.69/¼lb$32.69
Manganese Dioxide½3.27/¼lb$6.54
Cobalt Carbonate¼26.07/¼lb$26.07
Black Copper Oxide¼6.47/¼lb$6.47
Cobalt Oxide¼25.74/¼lb$25.74
Chrome Oxide¼6.21/¼lb$6.21
Manganese Carbonate¼3.81/¼lb$3.81
Bone Ash22.33/lb$4.66
Yellow Ochre15.00/lb$5.00
Black Iron Oxide¼5.55/lb$5.55
Silicon carbide11.98/lb$1.98
Black Nickel Oxide¼17.41/¼lb$17.41
Soda Ash11.88/lb$1.88
Epsom salts12.34/lb$2.34
CMC Gum¼9.77/¼lb$9.77
TOTAL$242.50

High-Fire Base Ingredients

Common High-Fire Additives

This chart shows the most commonly-used base ingredients in high-fire glazes.

High-Fire Base Ingredients Data

Material% of Recipes Used InTotal % Amount Used
Silica73.88%173193
Kaolin68.36%102803
Whiting59.97%97614
Potash Feldspar52.29%224069
Dolomite24.44%33783
Nepheline Syenite24.40%105562
Zinc Oxide17.55%14161
Talc16.42%17384
Ball Clay16.38%25150
Soda Feldspar13.69%52528
Gerstley Borate12.36%19330
Barium Carbonate9.71%16143
0.00%
Wollastonite8.28%17052
Ferro Frit 31347.29%11848
Spodumene6.84%14099
Strontium Carbonate6.23%8348
0.00%
Lithium Carbonate5.25%2168
Wood ash3.95%16507
Cornwall Stone3.67%24962
Magnesium carbonate3.13%2734
Ferro Frit 31102.50%6485
Ferro Frit 31241.99%4036
Calcined Kaolin1.79%2001
Redart1.64%4973
Albany slip1.42%7231
Colemanite1.35%1872
Petalite1.27%2419
Alberta Slip0.74%3285

High-Fire Base Ingredients Shopping List

For high-fire our list of base ingredients is similar to mid-fire, except we don’t require an expensive source of boron, resulting in our sample shopping list being about $100 cheaper than for mid-fire.

NameAmount (lbs)Unit PriceSubtotal
Silica50$0.85$42.50
Kaolin50$0.62$31.00
Whiting50$0.37$18.50
Potash Feldspar50$0.89$44.50
Dolomite25$0.73$18.25
Nepheline Syenite50$0.70$35.00
Zinc Oxide10$5.30$53.00
Talc20$1.00$20.00
Ball Clay25$0.69$17.25
Soda Feldspar10$1.20$12.00
Gerstley Borate1$5.38$5.38
Barium Carbonate2$2.55$5.10
Wollastonite10$0.77$7.70
Ferro Frit 31342$3.13$6.26
Spodumene2$14.83$29.66
Strontium Carbonate1$3.11$3.11
Lithium Carbonate0$69.57$0.00
Magnesium carbonate5$6.26$31.30
Redart5$1.03$5.15
Albany slip5$2.32$11.60
TOTAL$397.26

High-Fire Additives

The chart below shows the most commonly-used additives in high-fire glazes. As with mid-fire, both red iron oxide & bentonite are the most-used additives.

Common High-Fire Additives

This chart shows the most commonly-used additives in high-fire glazes.

High-Fire Additives Data

Material% of Recipes Used InTotal % Amount Used
Red Iron Oxide17.56%8171
Bentonite16.33%3459
Copper Carbonate10.44%2447
Rutile9.22%4747
Cobalt Carbonate8.20%1416
Tin Oxide8.06%3100
Titanium Dioxide6.90%2900
Zircopax/Ultrox5.63%4028
Chrome Oxide4.52%621
Cobalt Oxide3.99%567
Manganese Dioxide3.08%2248
Black Copper Oxide2.85%714
Black Nickel Oxide1.29%192
Yellow Iron Oxide1.12%271
Silicon carbide1.10%161
Yellow Ochre0.94%480
Epsom salts0.80%99
Stain0.75%449
Bone Ash0.74%370
Black Iron Oxide0.60%187
CMC Gum0.43%37
Green nickel oxide0.33%67
Ilmenite, Granular0.29%73
Soda Ash0.25%156
Mason 6600 black stain0.22%104
Manganese Carbonate0.19%83

High-Fire Additives Shopping List

NameAmount (lbs)Unit PriceSubtotal
Red Iron Oxide57.25/lb$36.25
Bentonite21.09/lb$2.11
Copper Carbonate16.23/¼lb$24.92
Rutile214.33/lb$28.66
Cobalt Carbonate¼26.07/¼lb$26.07
Titanium Dioxide16.05/lb$6.05
Zircopax/Ultrox25.58/lb$11.16
Chrome Oxide¼$6.21/¼lb$6.21
Cobalt Oxide¼$25.74/¼lb$25.74
Manganese Dioxide½$3.27/¼lb$6.54
Black Copper Oxide¼$6.47/¼lb$6.47
Black Nickel Oxide¼$17.41/¼lb$17.41
Yellow Iron Oxide16.71/lb$6.71
Silicon carbide11.98/lb$1.98
Yellow Ochre15.00/lb$5.00
Epsom salts1$2.34/lb$2.34
Bone Ash12.33/lb$2.33
Black Iron Oxide¼5.55/lb$5.55
CMC Gum¼9.77/¼lb$9.77
Ilmenite, Granular12.59/lb$2.59
Soda Ash11.88/lb$1.88
Manganese Carbonate¼$3.81$3.81
TOTAL$239.55
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