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4- and 8-inch Magnetic Copper Butt-Weld Backer Set is rated 2.9167 out of 5 by 12.
Rated 4 out of 5 by from Awesome product Been using these restoring my MGB. Worth the price. Makes life a lot easier welding. Makes a good backing, heat sink. wish the magnets were larger and stronger.. but they are acceptable. If the surface is not flat, you can clamp them in place Nice heavy pieces. very well made. Everyone in the autobody class I am in borrows them. Once they use them, they buy them. Wish I got a commission from Eastwood!! The peices are great. More shapes (long and thin, or wedge shapes would be helpful for those closed in and hard to reach areas. These are a must have for your welding toolbox
Date published: 2010-03-11
Rated 3 out of 5 by from Needs improvement I had the magnets pull out after getting the copper hot from welding too and the magnets seemed to have lost their magnetism after that also. The copper is heavy and works well to weld against but as has been stated, they don't bend and I find thier use limited. I bought 2 large, flat magnets to hold the plates in place and have also used clamps to hold them. I will be purchasing the flexible wedges for use on fender repair for better contour conformity.
Date published: 2011-03-30
Rated 3 out of 5 by from Seemed like a good idea ... These consist of a nice piece of heavy copper. They works well on very flat surfaces only. It will not conform to surfaces that are not flat so magnets will not adhere to the workpiece. The magnets are held into hole in the copper by a pressure fit. I got mine so hot that he copper expanded and some of the magnets fell out. When I tried to press them back in the magnets broke into pieces.
Date published: 2010-07-04
Rated 3 out of 5 by from a fix for these plates I like others have had the magnates fall out the first use. They also lost their grip during the first use. I ordered some 1/4" super strong ones off line and when they came in I put them in. I also used a center punch to add 4 divots around each side of the magnates to hold them in. So far this works well. Remember to not get them hot with continuous welding.
Date published: 2014-11-29
Rated 1 out of 5 by from Poor Magnet quality, Pricey, Used for about 5 mins and the magnets fell out, left unsuable. poor quality and obviously never tested by Eastwood. why would you degrade your brand with this type of poor quality product???
Date published: 2013-04-05
Rated 2 out of 5 by from Good copper backer but..... First Eastwood product I've been disappointed in. magents are useless after about 2 minutes of welding. Heavy copper plate though.....
Date published: 2011-07-25
Rated 3 out of 5 by from so-so The magnets wore out after a short time in use. No longer magnetized.
Date published: 2011-05-14
Rated 1 out of 5 by from needs stonger magnets Got my copper Butt-weld Backer set today and after the first use the magnets became weak. As soon as you start to weld the plate falls off. The metal is completely clean and should hold but doesn't. These plates are a great idea but they need work. Very disappointed especially for the price you pay.
Date published: 2014-07-27
  • 2015-04-17T09:59CST
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4- and 8-inch Magnetic Copper Butt-Weld Backer Set

Item #22993 Brand: Eastwood

Hands-free support when doing butt-welding or welding holes


Magnetic Copper Backer Set helps you weld without burning holes Two magnetic copper backing panels provide hands-free support when doing butt-welding or welding holes in sheet metal.
  • Prevents warping and weld burn-thru
  • Welding material won't stick to copper
  • 4" and 8" copper panels are magnetic; no hands or clamps needed

More info...

About 4- and 8-inch Magnetic Copper Butt-Weld Backer Set

Use this hands-free, no-maintenance, backing support when butt-welding and welding holes in sheet metal or whenever an open area needs to be bridged with a weld. Magnetic panels hold tight on their own, and your welding material won't stick to the copper. 1/8"-thick solid copper, with high-strength, high-heat magnets. Made in the USA.


4" magnetic copper backer and 8" magnetic copper panel

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