Scioly.org

dholdgreve wrote:...How far we have progressed... I went to competition with my Son many years ago near one of the great lakes... The sand used for Boomilever was literally right off the lake shore. There was no dust, because it was still soaking wet. It was so wet that every scoop hit the fill bucket with a thud! There were enough roots in it to grow potatoes!

I remember using my hands for a competition because the sand was so wet... there was an audible *plunk* when the sand was dropped so just went to the good ol' hand dump method...

A few years back I asked the boom supervisor at Nats where to get the "black sand", you can find the stuff if you look up "blasting abrasive".

https://www.amazon.com/Black-Diamond-Bl ... g+abrasive

^I bought that and it worked great.

As far as airborne particles, we just sifted out the smaller particles to select for the largest bits. The larger pieces worked best in the auto-loader, and didn't fly around.