EXAIR E-Vac For Degassing

Recently a new application using the EXAIR E-Vacs has arisen. This is not a pick and place or system bleeding application. This is an application that some may not realize there is a need for. This is a degassing operation, the purpose is to remove any and all gas from a liquid or any viscous fluid.  A picture of some silicon mold resin during the degassing process is shown below.

I recently encountered this through the molding of acrylic.  In order to get a good finish part that is not going to have air bubbles in it you need to degas the liquid resin before it is poured into the mold.  Depending on what you’re mold is made out of you may even need to degas it.   In the instance I worked with a mold, it was made from silicon.  This meant the resin for the mold needed to be degassed as did the acrylic resin after the mold was formed and being used.

To degas you need a container that will withstand vacuum being pulled on it.   Then you simply set your container of liquid resin inside the “degassing chamber” and seal it up.  All you need is a vacuum port to hook the E-Vac to and you’re up and running.   You will actually be able to see the bubbles coming to the top of the resin.  In some cases it may even appear to fill the bucket.

If you would like to discuss  a similar application or have any questions about how you can use an E-Vac, feel free to contact an Application Engineer.

Brian Farno
Application Engineer
BrianFarno@EXAIR.com
@EXAIR_BF

Yet another home use for a few EXAIR products

I feel as though my wife thinks I am the king of hobbies.  I know I have blogged before about motorcycles and several other activities that I enjoy.  So far I have found a use for an E-Vac to bleed the brakes on my Suzuki.  Now I have had my eyes opened to the art of wood working.

You see my brother in-law makes a living through custom wood working.  One day, he showed me a quick easy project – a pen.  That’s right, a plain old writing utensil.   So I followed his instructions and about an hour and a half later I had a pen that I had made all on my own. (The pencil shown below was just turned last night)

Flash forward several months and I am now making pens and pencils in my basement.  After watching the local sites and papers for cheap equipment I now have a wood lathe and have moved some of my metal working equipment to make room for wood working equipment.  The funny thing is I have still found several uses for EXAIR products.

The first is on my drill press, a very common application for us in industrial environments.  This would be the perfect spot for a Mini Spot Cooler.  I have a compressor that is just large enough to run it at full capacity and so when I am drilling through a 3 – 4″ long blank I don’t get the burning wood smell or melting acrylic.  It won’t even scream like a banshee when the bit gets in full depth of cut. (Below the Mini Spot Cooler is used to cool an abrasive cut off wheel.)

This isn’t the only place an EXAIR product can be used.   I could also use the Mini Spot Cooler or a Cold Gun on the lathe when turning acrylic blanks to keep the tool and cutting point cool.  I could even use a Mini Chip Vac to  vacuum the chips from the lathe as they are being made.  Not to mention that the 0.1 micron filter is fine enough to catch the sanding dust made when finishing the pens.

So whether you’re a hobbyist or a professional, EXAIR will have a product that will fit your needs or help make your work a little easier, safer, and quieter.  So feel free to give us a call and talk to an Application Engineer to discuss your application.

Brian Farno
Application Engineer
BrianFarno@EXAIR.com
@EXAIR_BF