Casting Slip – Adjustment

Casting Slip Adjustment PDF

For best results, please adjust your slurry before use according to the parameters in the chart.

1. Always measure Density first
1. Density is the "concentration" of particles in a liquid. Measured by weight, you need a 1000ml graduated cylinder and a precision scale to check it. Fill the cylinder to 1000 ml and weigh it, having taken care to tare your scale beforehand.
2. Measuring Viscosity After Adjusting Density
1. Viscosity is the resistance of a liquid to flow. Fill a LEMMER paint viscometer to the brim and calculate the liquid flow time.
2. If the slip takes too long to drain, add a little deflocculant at a time, too much deflocculant will have the opposite effect and the slip will thicken.
3. We suggest stirring for 5 minutes before adding any more sodium silicate to allow it to maximize its effect.
3. Deflocculant
1. The deflocculant used to adjust the viscosity is sodium silicate. NEVER ADD UNDILUTED SODIUM SILICATE to the slip. You should always dilute it with a like amount of water.

	Density	Viscosity
Slip	± 5 g/l.	± 5 sec.
05M	1763	33
124M	1765	30
A1	1780	32
B1	1780	33
Semi-Stoneware	1775	33
Terra-Cotta	1763	33