The most important feature of this unit is that you are mixing and pouring investment under a controlled vacuum environment.

Now you can automatically mix and pour your gold investment under vacuum with the St. Louis Investment Mixer. You can mix up to 18 flasks per hour. This is a real time saver as you will not have separate mixing, pouring and vacuuming operations. Since it is user friendly, anyone can be trained in a few minutes to operate this unit. Simply place your flasks in the enclosed drum under the investment mixing blades. Measure the correct amount of investment and water, then close the mixing chamber and start the vacuum pump (not included). When you have achieved vacuum, turn on the two speed mixing unit and set your timer. These units will reduce casting rejects and produce bubble free castings! Now you are ready to pour your flask. Position your flask under the valve, apply vacuum to the lower chamber and open the valve. As the investment fills the flasks, turn on the vibration table under the flasks and you are done!

Vacuum investment mixers for the jewelry investment process. A patented unique system on the market for the degasification of water and powder before mixing under vacuum by using adjustable speed and mixing time. Flask filling under vacuum and with vibration.