Festool Vac Sys Clamping System at Altitude

Joined
Sep 30, 2019
Messages
5
Good day, all!

I had started to become interested in the benefits afforded by the Vac Sys clamping system, when I found out about the 6,500 foot altitude "limit" in the instructions for the system. I live at about 7,300 feet, and wanted to see if anyone had positive or negative experiences with the system when operating outside of the recommended altitude range. I understand that I would see approximately 20-25% less clamping strength as a result of the thinner air, but how that practically affects its usability is not as clear. I would plan to use it on primarily smaller pieces with a domino or sander, and would also have a second clamping element for any larger boards that I would need to support.

Joe Felchlin was gracious enough to provide some of his experience with the system at just above 7,000 feet (his works well, but may take a few more seconds to develop the necessary vacuum). Any other insights would be greatly appreciated, before I decide to pull the trigger on an order (I know I can use the 30 day Festool money-back guarantee, but hope to just do it right the first time, and to hopefully create a forum for others in a similar situation to reference).

Thanks!
 
My shop is in the lower elevation of Colorado Springs (about 6200 feet). I know from reading the sensors on my vehicles the atmospheric pressure is 11.2 to 11.4 psi. The system works well at my location. It did have more "holding power" in northwest Indiana (about 14.9 psi).

As far as I know, Joe is the only one who uses the unit at higher altitudes.

Are you an American Graffiti fan?

Tom
 
tjbnwi said:
My shop is in the lower elevation of Colorado Springs (about 6200 feet). I know from reading the sensors on my vehicles the atmospheric pressure is 11.2 to 11.4 psi. The system works well at my location. It did have more "holding power" in northwest Indiana (about 14.9 psi).

Tom

Thanks for the response! Have you found that the lower "holding power" actually affects what you are able to accomplish, or is more of an academic exercise that only shows itself when you are pushing the limits outside of a normal workflow?
 
No issue with the holding power. Have yet to have an item come off the head while working it.

Tom
 
Back
Top