Components are good quality and solid.
Nice build quality on the unit.
A guide to explain the tools would be helpful eg: the Annealing rods. They are for softening metal to make it easy to rework.
Search Spot weld puller on Trev’s Blog on YouTube for a great review of this unit and how he uses it. He’s a master metal worker.
The heavy earth strap is a pain to use. Finding a position to attach it where it doesn’t cause panel damage or fall off mid job was impossible. Swap that for a clamp or magnet would be a much better solution.
The auto/manual mode is not explained and works only randomly. In auto, the puller should energize automatically but I found I have to switch the unit off completely when switching back to manual/trigger mode.
The wavy tool and claw are great for pulling creases in panels where you don’t have access. I used it on a door where I couldn’t access the inside as it was too shallow but for areas where I had access, I got instantly pro results using a basic teardrop dolly and slapping file which cost less than $100 and will last forever whereas all electronics have a limited life.
The single ended spot welding sounds like a nice idea but is not strong enough for welding two 0.8mm car panels together but might be ok for welding thin metal tabs on battery packs? Single sided spot welder cost thousands for a reason. Buy a two sided spot welder if that’s what you need or plug weld the panels instead.
So, if you can’t get to the back of the panel, this will help get the panel to a better point using less filler but if you can, do what the pros do. Use a slapping file and dolly and be done with it!
Damien 
