Blasting Wood inside a cabinet to raise the grain for Richard

This Video is for Richard, he wants to blast wood inside a Blast Cabinet.
As he was told to use aluminium oxide I started with the finer grade (80/120) which raised the grain and left a lovely finish. Richard wants a more ripped look so I tried with a more course grade of aluminium oxide (40 mesh). That didn't seem to be as rough as the sample he sent so I then tried garnet and finally the iron silicate.