Build dust separator more powerfull and useful

[NortonDommi]

It is called a Thein Separator and they wok very well. Shorter than a vortex cone separator and nearly as efficient. This one has been going strong for many years and also has been well used with a homemade Holy Moley: I extended the air out tube through the top part purely for some extra rigidity no other reason. Very cheap to build and when used to dig holes I can swap out the catch bucket as they fill up.