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Rock Art => Tumbling => Topic started by: bobby1 on October 06, 2016, 11:39:15 AM

Title: Tumbling Grits
Post by: bobby1 on October 06, 2016, 11:39:15 AM: I have some tumbling grits labeled 3F and 4F. How do these designations relate to the 220, 400 and 600, etc grit system?
Bob
Title: Re: Tumbling Grits
Post by: gemfeller on November 05, 2016, 10:40:15 AM: I'm bumping this old thread because I'm curious too. I have some 4-F grit I've used over the years and need to replace it soon but don't know what size to buy to match it. Any info out there?
Title: Re: Tumbling Grits
Post by: wheatguy on January 12, 2017, 09:59:17 AM: I'm curious about this too. I wonder if the 'F's' are similar to the F system of black powder grain size in muzzleloading...
Title: Re: Tumbling Grits
Post by: hummingbirdstones on January 12, 2017, 12:23:38 PM: I am clueless on this subject, but I did a search and I found this link. I don't know if this is helpful or not since it was a woodworking forum. :dontknow:

http://www.sawmillcreek.org/showthread.php?32287-Rottenstone-and-Pumice-Where-in-the-Scale
Title: Re: Tumbling Grits
Post by: Grayco on March 03, 2017, 02:01:20 PM: Quote from: bobby1 on October 06, 2016, 11:39:15 AM
I have some tumbling grits labeled 3F and 4F. How do these designations relate to the 220, 400 and 600, etc grit system?
Bob

From;
https://books.google.com/books?id=vRCndp0gvDcC&pg=PA31&lpg=PA31&dq=What+is+3F+grit&source=bl&ots=_V2I0z1lHb&sig=7_ZotPQqcfOT-2P_EVFSGgGyu9k&hl=en&sa=X&ved=0ahUKEwjgvcXDqLvSAhUUz2MKHfCNBRYQ6AEIOzAE#v=onepage&q=What%20is%203F%20grit&f=false
Title: Re: Tumbling Grits
Post by: gemfeller on March 03, 2017, 02:19:22 PM: Thanks for that! I've searched and searched for an answer to the point it's become a challenge. Congrats for finding this clear explanation.
Title: Re: Tumbling Grits
Post by: bobby1 on March 03, 2017, 09:22:38 PM: Thank You! I have been searching for a long time for this info. I have Pansy Kraus's book but I haven't read it thoroughly. Finally the answer!
Bob