Hey,
Thank for the reply, you're correct, I do believe it 1x1x1/8. It seem strong enough, the frame is light but because of the Z axis is some really tuff and heavy it almost a good 15pound by itself, the frame is like 5-8pound.
But I don't mind it being heavy, as it will help to push down the Z when drilling into marterial.
As for the bolt, it just one of those 1/8 self drill bolt for metal.
