lablover2484
starting to shine!
Member since September 2008
Posts: 39
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Post by lablover2484 on Oct 9, 2008 17:49:10 GMT -5
I bought some 30 grit because the 80 just didnt seem to be doing any good, Am I just impatient? Is 30 to rough to use? help!!!!
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Post by deb193redux on Oct 9, 2008 18:39:15 GMT -5
It will shorten barrel life.
Also you only get slightly more use out of 30 than 60 because when it breaks it does not break in half but rather into 3-5 pieces. While 30*2 and 60*2 would yeild 60 and 120 grit and still be useful, the reality is that 30*5 and 60*5 are both too fine to do much rough grind, so both grits peter out after the 1st break.
Getting the load right will hasten the grind, but it is a long process. Get the water right, the range of rock size right, and a good slurry - and you will see results.
But, if you are impatient by nature, cut shapes on a tile saw and polish in a vibe tumbler. Takes weeks instead of months. heck, maybe even 12days or less.
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jhaddad8
off to a rocking start
Member since December 2012
Posts: 13
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Post by jhaddad8 on May 25, 2013 21:29:26 GMT -5
How do you know h
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Post by Toad on May 25, 2013 21:48:44 GMT -5
Ha!
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Post by deb193redux on May 25, 2013 22:28:09 GMT -5
? ? ?
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Post by paulshiroma on May 25, 2013 23:33:50 GMT -5
Patience, young Jedi ... Seriously, this is a take your time hobby; borderline, load and forget about it. Daniel's suggestion of trimming prior to starting is excellent. FWIW, I use 46-70 sized grit as my starting stage (45-70 if you're into guns LOL). Lids take a bit of a beating.
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quartz
Cave Dweller
breakin' rocks in the hot sun
Member since February 2010
Posts: 3,352
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Post by quartz on May 26, 2013 1:07:16 GMT -5
My opinion, the rougher the grit, the bigger the barrel you need to use it efficiently. We start out w/16 grit in our 5-gallon barrels, but found it didn't work so well in our 1 3/4 gallon units. 80 works best for us in this and smaller ones. Haven't tried the 46 grit yet. Jamesp says 46 is good stuff, and I trust him. You didn't say what size you are runnig [assuming a rotary], so try it all if you can, be patient, and watch closely.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,564
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Post by jamesp on May 29, 2013 7:12:56 GMT -5
It is a slow process.I decided on 46 for 6 and 8 inch barrels.May be various opinions and not a huge difference in time savings w/coarse grits mentioned.A 6 pound barrel can often keep up with finish(220 500 and polish)work of two 12 pound barrels coarse grinding. Tumbling small slabs and pregrinding will save a lot of time.A take your time hobby..
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