Clay slip is clay. Well, basically it’s clay but with added water (of course) and chemicals that cause the sloppy wet clay mixture to pour like milk, instead of clumping.
So the fact is, let clay slip dry enough and you can use it just like any other clay. It’s not a magical, mystical substance with hard and fast rules. Continue reading What is Clay Slip?
You can mess around with these instructions and the previous instructions in another post, to see what best suits you. Personally, I’ve used the other instructions with success. These are borrowed instructions from a reliable source, but I’ve never personally followed them. Continue reading Another Approach to Mixing Your Own Clay Slip
There are two properties of slip that we want to test frequently. They are specific gravity and viscosity. Specific gravity means how much more than water does the slip weigh. For instance: A gallon of water at 70 degrees weighs 8.3 lb. Lets say we weight out a gallon of slip and it weighs 14.4 lb. Simply divide 14.4/8.3= 1.73.This is a ratio, it is generally accepted that 1.75 is good for slip casting. So our slip is a little light at 14.4 lb. per gallon, water weighs less than clay so we have too much water in our slip, we can’t take it out so we have to add more dry materials. (if the slip was too heavy we could have added water.) Okay, now we weigh the slip again and it is 14.5 pounds plus a little. Do the math and you can tell that you are right at 1.75. Continue reading Testing Your Batch of Ceramic Clay Slip
White Slip Recipe (cone 04)
INSTRUCTIONS FOR MAKING YOUR OWN SLIP Continue reading How to make your own Ceramic Clay Slip
