Okay, as a take-off on the earlier thread about cleaning walnut media (summary: why?) I am trying to find the best deal on media. Ground walnut shell is sold as a blasting media in various size granulations and is quite a bit cheaper than that sold as "casing polishing media". I assume it is the same material, just repackaged. The question is, which grit size would be best?
In a 50 lb bag it comes out to about $1/pound. The following grit sizes were listed on the site I was looking at (http://www.kramerindustriesonline.com/blasting-media/walnut-shell-grit-comparison.htm):
Extra Fine 40/60
Fine 20/40
Medium 12/20
Coarse 8/12
Extra Coarse 4/6
The numbers are the mesh size - which means nothing to me. However there were photos and it seems the Medium or Coarse would be about the same as commercial tumbling media (see photos below). Which do you think would be best?
Coarse
Medium
In a 50 lb bag it comes out to about $1/pound. The following grit sizes were listed on the site I was looking at (http://www.kramerindustriesonline.com/blasting-media/walnut-shell-grit-comparison.htm):
Extra Fine 40/60
Fine 20/40
Medium 12/20
Coarse 8/12
Extra Coarse 4/6
The numbers are the mesh size - which means nothing to me. However there were photos and it seems the Medium or Coarse would be about the same as commercial tumbling media (see photos below). Which do you think would be best?
Coarse
Medium