Using three different types of tumbler media to polish aluminum
1) Corn Cob
2) Green Pyramids – Item #43204 A from Eastwood
3) Ceramic Course V-Cylinder from McMaster – #4918A911
Check out our self drilling screws for drilling steel up to 1/2″ thick! More info here https://www.constructionfastening.net/Self_Drilling_Screws_For_Thick_Steel_s/150.htm
Video isn’t that good of quality, but you get the idea! This is 1/2″ steel and we are using a 14v cordelss drill in high gear. Elapsed time under 40 seconds. You can also install these with an impact driver, but sometimes the drill is faster as they don’t start impacting These self drilling screws will find all kinds of uses!