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Boulder buster blasts open rock.
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Previously:
https://www.homemadetools.net/forum/...244#post116078
https://www.homemadetools.net/forum/...414#post101520
https://www.homemadetools.net/forum/...220#post116000
Wow what the heck was that? Looks like the boulder Willie E. Coyote tried to drop on the Roadrunner....
A shame to break such a nice rock....
the concept of how the boulder buster works is pretty clever, and has a number of applications
I think this Sierra Blaster may be using a slightly different method? 42-second video:
https://www.youtube.com/watch?v=2-UplezD3bg
Looks like they're marketing this not as explosives, but as a "cartridges and boosters" solution that qualifies for a fairly easy ATF exemption (video plus quiz that you can retake multiple times plus affidavit of responsibility).
More: SierraBlaster