Best way to dry blasting grit?

Build a plastic tent around them if you haven't got a small enough room/store to put them in, then use a dehumidifier (with permanent drain or big bucket) to really dry the air out. If the area isn't very warm, put in enough heating so that the temperature stays above 20C to keep the dehumidifier working well. If the bags are spaced out a bit they'll dry out quite quickly.

Mark Rand RTFM

outside

downpour,

summer,

chamber

enough heating

Of course, Mark, I must be suffering from brain fade !! I have a large commercial dehumidifier, the 40 bags are currently in a Portakabin, and I did actually get round to fixing the roof before the weather broke, so as I write this water is being pumped out and is dripping into a bucket - a couple of pints already !!!!!

...doh as Hommer would say

AWEM

Just what you need for the small home-workshop blasting cabinet, a tonne (or are they 50kg bags?) of grit...

Mark Rand RTFM

They are an odd weight. Certainly more than 25 Kgs and less than 50 kgs - 40 Kgs comes to mind - so I suppose that must be 1.6 tonnes. I know that the portacabin tilted slightly when I loaded it in . I run the manual cabinet on re-usable grit, but this is once only 'expendable' for the big blasting pot. Intended for motorway bridges and the like. In practise I tend to scoop it up and re-use it - probably goes though twice or three times on average but gets very fine and dusty.

Portakabin is nice and toasty with the dehumidifier running, all those watts of recovered heat. I've wired a humidistat in this afternoon to save on the electricity bill. Down to 55% RH with it raining outside.

AWEM