Spring benders are cheap and work well. Same for tubing cutters.
The tubing flair unit should be the best you can get.
The ones at a refrigeration supply are about $30 and will last a lifetime .
The $1.99 at the hardware store may never work for tight joints.
Diesel or brake fluid is east to contain compared to refrigerants.
The refrigeration folks also have much more robust flair nuts , get a handful while at the shop.
Do it only once , if its done right!
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