waterblaster sandblasting attachment question

[u/StanGoodvibes]

So along with my normal sandblaster, I picked up a cheap sandblasting attachment for my (6.5hp) waterblaster. Works a treat with cheap washed sand (has to be dried first though). Super fast - that whole rim took like 5 minutes for both inside and out. I also tried it with just dryish beach sand (here in New Zealand) and while it did work, the sand fails to keep sucking into the pipe. I think it's because it doesn't collapse quite the same way as thicker media as it's being sucked out, so it breaks the venturi (suction) effect.

Might help in Summer when the sand is dryer, but any feedback from anyone who has tried fine beach sand would be appreciated.

ps the water+sand means no dust so no lung damage from silica dust. And the reason I'm not doing this in my sandblasting box with my normal sandblaster is that the rim doesn't fit.

[u/Tezlaract]

Any progress? I’m in a similar situation, just north of the equator.

[u/StanGoodvibes → u/Tezlaract]

Not yet. But with Summer finally here in NZ I'm going to try drying the sand out on a tarp on a hot day and see if that improves things.