Basically, my school just replaced their 5000 square metre astro turf pitch and they've given me a load of the old turf. Problem is that its caked in sand, like properly caked in it, the bristles are about 2 cm and all of it is filled. Any tips on getting it all out? I've tried pressure washing it but to get it out completely i'd have to spend a really long time and i don't think my washer is powerful enough, I was thinking letting it dry out and trying to beat it out? Anyone had the same problem before?
I know this probably should have been in build a jib but there's be barely any activity on there for a while.