As requested, sketch of gas spring tool with dimensions. I used two sizes of square tubing, 1" and 5/8". The curved section is 1/2 of a 1" galvanized pipe although I think 3/4" will work better. Make the 1/2 pipe piece wider than the 1" handle (about 1/4" each side), the extra width will help hold the gas spring head. All the bolts are 1/4" except for two, 1/8" machine screws that hold the 1/2 round piece to the handle (heads countersunk).
