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ATM a pier for the realm
I have to agree with Ken. Keep it simple. I would use a set-up like this:
Get a 2'X2' concrete patio flag stone or 30" round patio stone. Attach
a base-plate that
is 1/2" thick 12" square. The 4 corner bolts come up thru the bottom. Use
all stainless
fasteners and washers for a good hold. Now the pier has been welded to both
bottom and top
plates. Use hot-rolled (commonly known as black-iron) steel for both plates
and pier. Make
the pier 3" pipe.Keep in mind that all pipe in this country is measured
from the INSIDE.
The top plate has your mounting holes. They can be threaded or just
drilled to take thru bolts. Depending on how big a scope you have and
weather you want to install a wedge or
not.When this is all done, take the pipe,(now having plates on each end) to
a shop that does
sand-blasting and have them go over it real good with the sand-blaster.
Then paint it whatever color you like.
The beauty of this system is of course in its simplicity, cost and
transportability. The large
round,(or square) stone can be managed easily by 1 person.The rest of it
can be separated
and worked on as needed. The welding and sand-blasting can be done by the
same shop.
It fills all your requirements for cost, ease of manufacture, and
portability. To install this rig
just find a spot that can be leveled. The bed should allow the base to sink
in about an inch.
This is the only time you will need additional help. Rather then expect the
pier to remain
level, I would just get it as close as you can. Then adjust for any deviation
at the equatorial head. I would think the whole set-up would cost under
$100, a one-time
out-lay. Design it well, do it once, and it should give good, long service.
regards, Ron