That’s smart, never thought of that. Of course then I’d be sweating my compressor (30 gallon HomeDepot 115v) losing all of it’s pressure by adding more post-flow time.
Which reminds me, I’ve been meaning to suggest @langmuirsystems to update their FAQ with real-world information regarding compressors. The reason is I feel many prospective buyers sweat whether or not a 115V compressor will work with the CNC to the point of not purchasing (I was one of them), and I feel a lot of that fear is misguided. Introducing another dedicated 220V outlet, the added cost of the compressor, and the floor space, is probably seen as a large barrier for many.
For example I have a $300 Husky 30 Gallon 115V compressor. It will fill the tank to approximately 170psi and then re-start at 120psi. My longest cuts on the crossfire are generally in the 10 minute range, and in such instances I’ve never seen the compressor tank below 110psi. That 5.3cfm compressor vs 6.7cfm requirement seems scary, but in reality you’ve got quite a large buffer before the PSI drops to the point where it matters.
I don’t see how having a large-sized 115V compressor would ever be an issue unless you’re running in a production environment, which is probably fine for 90% of Crossfire users.