You can easily and quickly get rid of air bubbles with this manual vacuum pump and vacuum valve.
The bubbles are generated by mixing the ceramic suspension and remain there for a long time.The worst case is when they get stuck forever in the casted item.
Good news that you can exempt your slip from all of these in a simple mason jar that you can vacuum by hand. Otherwise the air inclusions can damage your masterpiece at the burning process. Because they can crack the pottery as a result of the heat.
Furthermore it is also advisable to store the slip under vacuum for later use.
This prevents water from evaporating so you will keep the identical viscosity and characteristic for long term.
Casting vacuum tool includes:
1 vacuum pump (173 cm3)
15 vacuum valves for mason jars
That can be used to to create vacuum in larger size (even 5 liter) jars.
As a result of the vacuum, air bubbles are removed faster from the ceramic slip.
Rest of them can be stored in an airtight environment to preserve the original water-ceramic proportion and quality for later use.