When I built my loader, I was going to use the compression fittings but ended up getting hydraulic tubing with thicker wall that I was going to use (1.5 vs 2 mm), machined the fittings my self and welded them on with my old trusty rectifier stick welder with 3/32" 6013 rods.
I also made a quick and dirty bender for the tubing that worked surprising well.
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