WHITE EARTHENWARE SLIP RECIPE
June 2002

1. Add water to mixer.

2. Add minimum Sodium Silicate N42 diluted 50/50 with warm water.

3. Mix and put aside minimum Dispex N40 diluted 50/50 with warm water.

4. Agitate mixer as you add some of the clay the slip will gradually thicken. Add a small amount of Dispex N40 mixture to maintain fluidity. Then add more clay. Continue this process until all the clay is in the mixer and a smooth creamy consistency is obtained.
The maximum amount of Dispex N40 should not have been needed to this stage.

5. Check the litre weight,

If litre weight is higher than the aim add water.

If litre weight is lower than the aim add clay.

For accurate litre weight measurement contact Walker Ceramics for a Litre Weight Bottle and Calculation Chart.

6. Mix for 1 hour (more for multi bag mixes) then check if more Dispex N40 mixture is required for pouring fluidity.

7. Allow slip to mature for 24 hours.

8. Reblend.

9. Sieve through an 80 mesh screen before use.

For multi bag mixes proceed as above but leave addition of Dispex until final adjustment.

In all our slip recipes we recommend that the maximum amount of Sodium Silicate is not exceeded.
Before making any adjustments make sure the litre weight is within the stated limits for the body.

WHITE EARTHENWARE WITH TERRA COTTA CONCENTRATE SLIP RECIPE

1. Mix the Terra Cotta Concentrate with all the water in the mixing tank.

2. Mix thoroughly for at least 15 minutes until completely blended and without lumps. Failure to do this may reduce the intensity of the terra cotta colour in the fired result.

3. Add Sodium Silicate N42 diluted 50/50 with warm water.

4. Mix, in a separate container, the minimum Dispex N40 diluted 50/50 with warm water.

5. Agitate mixer as you add some of the clay. the slip will gradually thicken. Add a small amount of Dispex N40 mixture to maintain fluidity. Then add more clay. Continue this process until all the clay is in the mixer and a smooth creamy consistency is obtained.
The maximum amount of Dispex N40 should not have been needed to this stage.

6. Check the litre weight.

if litre weight is higher than the aim add water.

if litre weight is lower than the aim add clay.

For accurate litre weight measurement contact Walker Ceramics for a Litre Weight Bottle and Calculation Chart.

7. Mix for 1 hour (more for multi bag mixes) then check if more Dispex N40 mixture is required for pouring fluidity.

8. Allow slip to mature for 24 hours.

9. Re-mix for short time.

10. Sieve through an 80 mesh screen before use.

For multi bag mixes proceed as above but leave addition of Dispex N40 until final adjustment.

In all our slip recipes we recommend that the maximum amount of Sodium Silicate is not exceeded.
Before making any adjustments make sure the litre weight is within the stated limits for the body.