QUOTE(charliew @ Dec 4 2011, 09:45 PM)
I have a big cabinet that I made from 3/4 plywood so I could get motorcycle frames and big stuff in it. It's lined with sheet metal. I used the parts from scatblast including their dust collector and their biggest window. It has a angle iron frame stand that the bolts go through the plywood but not the sheet metal. I've never had a static problem. I've used both my friends factory cabinets and haven't had a static problem there either that I felt or saw. I did see something neat the last time I blasted though. I was blasting old chrome on some tractor parts and it gave a real neat glow till the chrome layer was off. It also happened on a chrome lined ram end for a hydraulic cylinder.
Charlie, I used to live close to you (Taylor) and I'd bet the humidity is a factor. I love TX, the people and the food but I don't miss the weather. That glow sounds like St. Elmo's fire.
QUOTE(Jake Raby @ Dec 5 2011, 05:08 AM)
The ESD is greatly dependent upon the atmospheric conditions as well as the media that's being used... This time of year it's always worse in my units.
What's ESD, Jake? "electro _____ _____"?
QUOTE(Mark Henry @ Dec 5 2011, 06:33 AM)
The main reason factory cabinets do not suffer this problem as bad is they have the vacuum system mounted on the unit or beside plumbed with metal ducting. Thus the whole system is grounded together. I wouldn't be surprised if commercial unit also had a ground wire running up the hose to the gun.
Not a big issue in sandblasting, but huge in woodworking. Dust collecting systems in large woodworking operations are a known fire hazard due to static discharge igniting the highly flammable wood dust. This is the reason big commercial wood dust collectors are outside the building and metal ducting is code. It's not a huge problem with small (hobby) wood dust collectors due to small volume, but I always empty mine the same day I use it.
Now it makes sense. I don't know why the smallest things overtake my minimalistic mind.