grit question?

lowkey off to a rocking start Member since April 2008 Posts: 18	grit question? May 22, 2008 11:23:30 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by lowkey on May 22, 2008 11:23:30 GMT -5 I bought 80 grit, the Question is 80 verses 60/90 which do you use?or which is used for what rough?
	Praise be to God! Did you have saw therapy today?

thomtap starting to spend too much on rocks Member since December 2007 Posts: 237	grit question? May 22, 2008 11:28:33 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by thomtap on May 22, 2008 11:28:33 GMT -5 If you are using a rotary tumbler either will work. The 60-90 might be a bit faster, but not much. If you are using a vibe you should start with 220 or so. Thom

chassroc
Cave Dweller

Rocks are abundant when you have rocktumblinghobby pals

Member since January 2005
Posts: 3,586

grit question? May 22, 2008 14:00:35 GMT -5

Quote

Post by chassroc on May 22, 2008 14:00:35 GMT -5

There is a company called Jasco that sells single grade grit and insinuates that it produces more consistent results; I don't know if that is true but I'm thinking it matters little until you get very experienced and keep prodigious records and photographs highly magnified.

Most of us run the coarse stage until the rocks are well formed and rounded and if that takes more time with single graded grit than a range of grit sizes is probably not as significant as just getting well formed rocks.

After saying all that, I am starting to wonder if single grade grit does make a difference. Anyone taking notes and pictures out there?
csroc

deb193redux In Memoriam RIP Daniel Bontempo (1959 - 2022) Member since September 2007 Posts: 6,010	grit question? May 22, 2008 14:29:15 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by deb193redux on May 22, 2008 14:29:15 GMT -5 I heard single grade was more useful for lap'ing. In tumblers it is just more expensive, but not harmful.

johnjsgems gets rocks for Christmas Member since August 2007 Posts: 6,959	grit question? May 22, 2008 15:07:33 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by johnjsgems on May 22, 2008 15:07:33 GMT -5 What deb193 said
	John at JS Gems www.jsgemslapidary.com

Condor driving up their electric bill Woodward Agates Member since February 2005 Posts: 2,772	grit question? May 22, 2008 20:59:44 GMT -5 Quote Select Post Deselect Post Link to Post Member Give Gift Back to Top Post by Condor on May 22, 2008 20:59:44 GMT -5 To me they are about the same except for the price. Graded are a little more expensive. Condor
	Walking through the land where every living thing is beautiful. Why does it have to end? (Thom Pace, theme song to Life and Times of Grizzly Adams.)

johnjsgems
gets rocks for Christmas

Member since August 2007
Posts: 6,959

grit question? May 23, 2008 10:15:40 GMT -5

Quote

Post by johnjsgems on May 23, 2008 10:15:40 GMT -5

Graded grits cost more than mixed grades. 60/90 is a mixture of 60-90 grit, average 80. I doubt you would notice a difference in a tumbler. Where it might make difference is in higher grades. 220 graded is finer than 120/220. Flat lappers generally say it matters and buy 220, 400 and 600 grit. Tumbling grit runs longer and runs while breaking down so mixed grade works just fine.

John at JS Gems

www.jsgemslapidary.com

« Prev
1
Next »

rocknrob: That was one heck of a windstorm that thankfully missed me. I guess Seatac almost hit 60mph gusts. I bet those were some fun landings Nov 20, 2024 21:55:16 GMT -5

Post by lowkey on May 22, 2008 11:23:30 GMT -5

Post by thomtap on May 22, 2008 11:28:33 GMT -5

Post by chassroc on May 22, 2008 14:00:35 GMT -5

Post by deb193redux on May 22, 2008 14:29:15 GMT -5

Post by johnjsgems on May 22, 2008 15:07:33 GMT -5

Post by Condor on May 22, 2008 20:59:44 GMT -5

Post by johnjsgems on May 23, 2008 10:15:40 GMT -5

Chat Box v.2