I’m preparing an air pipeline for a future CNC Rover or SCMI, around 10 hp with 4X8 table with two vacuum pumps. Is the ˝ inch copper enough to provide air for such a machine or not? What is a sufficient PSI and Gallon size compressor to run CNC and Edgebander in a small shop?
From contributor B:
I would run 3/4" at least. It is not much more expensive. A CNC can use quite a bit of air and I am sure a pressure drop would cause bad things to happen. You should have a specific machine in mind and find out the CFM requirements.
We had a pressure problem that caused all kinds of sanding problems. We ended up adding a second 10hp compressor to fix the problem. We are also expanding the shop and we are going to move one of the compressors to be closer to the use point. There is line drop and you have to plan for it.
I contacted manufacturer and found that it could be used for air; only exception being uv light. It must not be in direct sunlight.
I installed 1" pex through out and did loop several times with over 60' of width and 140' length and have used the line for over a year with no problems and love it. It is very easy to add new fitting or lines and it allows no flow noise. It is not particularly bothered by hot or cold temperatures. I do have a large cnc machine and when air came through the ceiling I did go to copper just from a being able to stay ridged stand point.
There are all kinds of new pex pipe available and even larger sizes now with the cost of copper. Easy to run and easy to fix or repair. The flexibility is a little of a bother initially but you get use to it.
Hope this helps.