I posted a YouTube video of a DIY Paller Buster build using 3/4 inch pipe and fittings. Here is a picture of my attempt...
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I say attempt, because it's still a work in progress. The problem is that I have an inexpensive Flux Core welder from Harbor Freight for my welding, and I really don't know how to weld. So, this pallet buster has been welded, and rewelded at least twice. Here is the picture of where the welds are...
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OK. some of you guys might tear into me for such crappy welds, and I admit they don't look very good. Worse yet, they have not held very well. With all the downward force on the pallet buster to pry up the boards, I have managed to break the weld(s) more than once. Here is what happens when the weld breaks....
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When the tongs get out of alignment, it is a lot harder to use the pallet buster to pry up the boards. It still works on the easy boards, but if I get a tough pallet, it's not so good. So, this will have to back to the garage for more grinding down and rewelding.
In my defense, each time I have rewelded this pallet buster I have done a better job. Maybe I'll get to the point where it won't break? I hope so.
Some thoughts, in general, in using the pallet buster.
1) It works great on easy pallets with boards that are solid.
2) Most pallets are not easy and the boards have cracked ends.
3) A small cracked end on the pallet board turns into the entire board cracking in half when you pry it up with the pallet buster.
4) If the end of the pallet plank is cracked, you will be better off cutting the board with a circular saw, wasting that last 1 1/2 inches, but saving the remainder of the board.
5) if you cut off the ends of the pallet planks, you can usually pry up the middle part of the pallet without breaking the board. That is because you can get both tongs of the pallet buster under the board when you pry it up.
6) If you only need shorter pieces of wood, cutting off the boards with a circular saw will typically give you 2 ~18 lengths of useable board. Since I am currently making planters with 16 inch boards, I don't need a pallet buster for that middle section. Just cut the wood with a circular saw and be done with it.
7) If you need boards that are longer than ~18 inches, you can usually use the pallet buster on the middle section and pry that up, giving you a ~36 inch useable board.
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Recommendation: I found that the pallet buster was busting more wood than saving boards. Lots of the pallets I have brought home have planks that just split and crack in half using the pallet buster. The tool works great on easy pallets with good wood, but any cracked ends result in cracked boards. No sense in breaking down the pallets in a few minutes with this tool if you end up with firewood. For $20 in parts, if you can weld it yourself, it may be worth it to you. I would not recommend buying one of these tools for $50 or more online. I just don't think they work as good as shown in most videos. At least, not with the quality of pallets I get for free.