DOMINOX guides
The rules for copper, torch work and refrigerant come from the bodies that wrote them: the Copper Development Association, OSHA and the EPA.

From cut to joint: preparing copper tube
A square cut, a clean edge, then the flame.
Read the guide
Torch work near wood and insulation
Move it, shield it, and keep an extinguisher in reach.
Read the guide
Before you open a refrigerant line
The charge goes to a recovery machine, never to the air.
Read the guideThe tools these guides use
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CT-650
CT-650 Tubing Cutter with Deburring Tool
One cutter from 3/16 to 2 inch copper, with a deburring pen in the box.
3/16-2in
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212JF
212JF Stainless Heat Deflector Shield
Clips to the torch tip and keeps the flame off the wall behind the pipe.
304stainless
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CT-308
CT-308 Refrigerant Recovery Plier
Clamps on a sealed copper line and pierces it, so the charge goes to your recovery machine.
4-8mm