On Oct 11, 9:50*am, "Karl Townsend"
wrote:
I'm probably buying a used high tunnel or greenhouse this week...

The hoops are made of tubing and the ends have been drove in the ground.
Pulling these out without crushing will be a trick. I've got to do it 50
times. Worth making some sort of contraption. I know the O.D. is nominally
1.6" but not sure of exact number.

I could drill the O.D. between two steel blocks and then use 1/4" bolts to
clamp together. Then a loop of light chain to go around a long 2x4 for a pry
bar. This would work but it would be slow.

Better ideas?

Some ideas:

* On Mar. 4th, Winston described modifying a hydraulic lift table to
do a similar job: http://tinyurl.com/ylcwvv8

* There are some designs of “fence post pullers” described on the web.

* If the supports disassemble in sections, you might have access to
the inside of the conduit to allow you to put a chain inside it with
an expanding anchor (or plug) and be able to pull it out with a
backhoe.