Slit Casting Ceramics

This is a step by step tutorial on how to slip cast.

Slit casting ceramics.

Slip is just a liquid mixture of clay or a liquefied suspension of clay particles in the water and is generally a little thinner than a slurry. Slip casting is liquified clay poured into a plaster mold the ratios are roughly 75 percent clay body to 25 percent water. Slip casting is the process of filling the molds with slip which is the liquid clay allowing it to solidify and after a while forming a layer called the cast inside of the mold s walls. In slip casting a slurry of clay and water is poured into a porous mold usually made of plaster.

This happens because the mold absorbs the water from the slip through its pores collecting the ceramic particles against the mold. Porcelain casting slip cone 6 8 antique white frost very white. As the mold is rotated the slurry coats the mold wall and water is absorbed into the plaster thereby drying the slurry closest to the wall. Ready made casting slip is commercially available in all firing ranges making it super convenient but if you were wondering how to make casting slip from your regular clay body this post is for you if you like to combine handbuilt or thrown elements in your slipcast pieces it can be very difficult to find a casting slip with exact same shrinkage and absorption characteristics as your.

Make offer vtg slip casting ceramic mold christmas noel 1of4 e no maker s mark ns097. Vtg ceramic pottery slip casting mold plain smooth bowl 8 l x 5 1 4 w. Vtg slip casting ceramic mold christmas noel 1of4 e no maker s mark ns097. Slip casting of clay pottery is depicted on egyptian tomb walls and minoan amphorae.

Placing it at an angle avoids stalactites of clay forming on the bottom of the piece. Once the slip is the desired thickness check by blowing on the edge of the mold where the slip and plaster meet pour the extra casting slip back into the container and leave the mold inverted at an angle to drain into a bucket. If you are interested in mixing your own casting slips check out these tips and reference guide from laguna clay by clicking here. If you have any questions about selecting the right casting slip for your studio or project give us a call we are happy to help you.

Slip casting can be useful for making multiples of one object and to make casts that are hollow on the inside.