One of the biggest misconceptions is whether or not you need an auto-darkening soldering cap (speed glasses). I'm not going to lie to you, if you can afford it and don't plan on abusing it, having an auto-darkening welding cap is a good thing. If you are going to have it rolling in the back of your pickup, you should seriously consider a standard welding cap.
When you first start learning how to weld, using speed glasses can be a real advantage because you can see what's going on. This may be more important for learning how to tack weld than learning how to wire feed weld, which only requires pulling the trigger. In addition, you can set everything up before you drop the hood. The benefit of seeing what is happening while the rod is welding is that you can lower the hood and know exactly where the rod is when you scrape to try to start the arc. If you don't have this feature, you won't know where to start your arc unless you have experience. Another advantage of the Auto Blackout Hood is if you are doing a lot of production welding. If you are starting and stopping a lot of things, or doing seam welding for a long period of time, it will be handy to not have to lift the hood every time you need to find the next weld spot.
Automatic blackening caps range in price from $100 all the way up to $400. It all depends on your budget and what you want to get out of it. Most of them have the ability to set the shade of the lens to be used. Some will even go down to shade 5 so you can use it to make cuts with a torch.
Standard welding hoods can be as low as $5, tens of dollars or more at garage sales. The standard welding hood is very affordable and if you happen to damage it, it's no big deal because it costs so little.
I have personally used auto-darkening caps, but to this day, I choose not only because I think they are a bit expensive but the simple fact that I really don't need one. Some people would have you believe that you need a tanning mask, but I disagree. I see it as a luxury, not a necessity. Spend your money on your welder and welding rod and make sure they are up to snuff. It's a better place to spend your money. The more you practice welding, the more you'll realize that your rod or torch is nothing more than an extension of your hand, and that it's easy to figure out where it is at all times, even if you're not looking. After all, practice makes perfect.
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