Slit Casting Ceramics

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.

Slit casting ceramics. Placing it at an angle avoids stalactites of clay forming on the bottom of the piece. Slipcasting or slip casting is a ceramic forming technique for pottery and other ceramics especially for shapes not easily made on a wheel in slipcasting a liquid clay body slip usually mixed in a blunger is poured into plaster moulds and allowed to form a layer the cast on the inside walls of the mould. This is a step by step tutorial on how to slip cast. Slip casting can be useful for making multiples of one object and to make casts that are hollow on the inside.

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 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. Vtg ceramic pottery slip casting mold plain smooth bowl 8 l x 5 1 4 w.

This happens because the mold absorbs the water from the slip through its pores collecting the ceramic particles against the mold. Vtg slip casting ceramic mold christmas noel 1of4 e no maker s mark ns097. Porcelain casting slip cone 6 8 antique white frost very white. 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.

Slip casting is liquified clay poured into a plaster mold the ratios are roughly 75 percent clay body to 25 percent water. 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. In slip casting a slurry of clay and water is poured into a porous mold usually made of plaster. The process usually takes at least 24 hours per piece.

Slip casting of clay pottery is depicted on egyptian tomb walls and minoan amphorae.