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GR10-L - Ravenscrag Iron Crystal

Modified: 2016-09-30 22:52:21

Plainsman Cone 10R Ravenscrag Slip based glaze. It can be found among others at http://ravenscrag.com.

Material Amount
Ravenscrag Slip100.00
Added
Red Iron Oxide10.00
110.00

Notes

Without any added flux Ravenscrag will produce an iron crystal surface with 10% iron oxide.

Related Information

Ravenscrag Iron Crystal

Ravenscrag plus 10% iron oxide on the outside, Ravenscrag Slip plus 10% talc on the inside (GR10-J). Fired at cone 10 reduction.

An awesome iron crystal glaze recipe for cone 10R

This iron crystal glaze is Ravenscrag slip plus 10% iron oxide fired to cone 10R on a buff stoneware (Plainsman H550). Since Ravenscrag slip is a glaze-by-itself at cone 10, it is an ideal base from which to make a wide range of glazes. It has its own website at http://ravenscrag.com. It was originally formulated using Digitalfire Insight software. The project built on the merits of a specific silty clay that was noted to couple very good suspension and drying properties with a low firing temperature. The process involved calculating what minerals needed to be added to it to produce the chemistry of a middle-of-the road silky cone 10 glaze; the product was Ravenscrag Slip.

Fixing a crawling problem with Ravenscrag Tenmoku

Crawling of a cone 10R Ravenscrag iron crystal glaze. The added iron oxide flocculates the slurry raising the water content, increasing the drying shrinkage. To solve this problem you can calcine part of the Ravenscrag Slip, that reduces the shrinkage. Ravenscrag.com has information on how to do this.

A cone 10R iron crystal glaze using only Ravenscrag Slip and Iron

Ravenscrag Slip iron crystal glaze fired at cone 10R on porcelains. The recipe is simply 90% Ravenscrag Slip and 10% iron oxide.

Links

Recipes GR10-K1 - Ravenscrag Cone 10R Tenmoku
Plainsman Cone 10R Ravenscrag Slip based glaze. It can be found among others at http://ravenscrag.com.

XML to Paste Into Desktop Insight

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By Tony Hansen


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