Strong Hand Tools Hole Plug Magnet XL, Hands Free Weld, Pivoting Magnetic V-Pad Base, Spring Loaded Arm, Heat Dissipating Copper Pad, Length: 8.9", AGK450, Strong Hand Tools

I'm a beginner welder and restoring our '65 C10. Filling a LOT of unnecessary holes in the firewall and floor along with some here an there. This thing worked AWESOME! The magnets are SUPER powerful and the adjustment makes it that more a joy to use.

Did the job plugging some holes in plate steel.

Works as it should. Magnets are strong and after you get it set right it’s a handy tool for those welds that need a backer.

Of the four different types of copper weld backers I bought, this is my favorite. The magnets are strong, and the mechanism allows them to fit surfaces at different heights and angles. The size and shape of the copper plate allows it to fit into smaller spaces than the large flat plates, yet is large enough to do the job. The spring steel support allows me to adjust the pressure. The low price makes it a best buy, in my opinion. I've been using it to help me plug burn-through holes when working on the floor pan of my car (I'm not a very good welder), and it has been a godsend.

Not a permanent plug but will stick to metal and help fill your hole

I use this with a couple of magnets to hold it in place to fill in small holes on thin aluminum jon boats with a TIG welder. This is an amazing tool if you do not have one you need to get one and get a couple of small high-powered magnets to go with it if you plan on using it for aluminum or stainless. Put this tool on one side and the magnets on the other side of the aluminum or stainless and it holds it in place quite well.

I don’t write a lot of reviews for Amazon, but this magnetic hole plug magnet is simply amazing. I’ve Stick, Mig and Tig welded for years and finally purchased this because I heard it was worth while. Wow! I can’t believe I have gone without using this for years. The copper backing pad does 3 things. First, it provides a backing material to help weld holes and gaps- so much nicer that trying to weld thin sheet metal gaps without- prevents burn through on edges and gaps. Second, the copper provides a conductive area to assist in continuity of welding gaps. When using a gas mig, it doesn’t splatter, spit or jump. It joins the edges seamlessly. I was joining gaps of 1/8” that look amazing with this tool. Third, the copper backing provides a surface area to keep the weld beads from over shooting which helps reduce grinding and clean up. I am shocked at how great this tool is and how I should have bought it years ago. I’m replacing the floor pans on my 1966 Mustang and there is a huge amount of welding, gaps to fill and grinding. I had to share. Really, this is worth the money no doubt.

Good for filling holes in thin meter (trailer fenders)