Easy
Story:
I bought a bunch of tools at an auction lately and some of the concrete tools had old hard concrete plastered all over them. Obviously, they didn't take care of them very well. I also bought a 4' bull float with five 6' extensions and that one was pretty bad as well.
After building a little frame out of 2x4s and placing some plastic in the middle, I put the tools in the trough and poured 6 liters of white vinegar in it. All I had to do is let it soak for 10 minutes and scrub off the old concrete with a paint scraper and a wire brush.
The acidity of the vinegar dissolved the concrete to the point where it came off really easily. Best trick ever!
Videos:
Pictures:
Tools:
Air nailer
Compressor
Knife
Paint scraper
Wire brush
Materials:
Two 2x4s
12" x 60" plastic
6 liters of white vinegar
Cost:
$5
Time:
1hr
Conclusion:
It worked really well and the tools are back to how they should be
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