jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Oct 17, 2017 5:10:11 GMT -5
Mission is to tumble polish soft rocks like our oversea neighbors. Like fluorite and calcite. A synopsis from another thread. Using a vibe and AO 80 to speed the abrasive steps by having 75% Mohs 7 media to assist breaking down the AO 80. 2 tablespoons of 0-1/2 grade pumice were added at beginning also. Black obsidian is a about the best candidate for seeing the effects of abrasion on photos because of the way it pits. All photos are similar in magnification. Obsidian after 4 and 12 hours. See pencil marks to highlight pits Obsidian after 4 and 24 hours. Pits in pencil marks gone. Light beginning to reflect on 24 hour sample. Light reflection at 4, 7, 12, 24, 32 and a seperately polished obsidian. So the obsidian is showing the effects of the abrasive as it breaks down. An indicator stone. This piece of obsidian was pulled from 7 to 32 hours and then put back from 32 to 52 hours. Note pits were not totally removed at pressure points at corners. Folly of skipping abrasive steps. Illustrates the disappearance of the pits. Mohs 7 coral(and other Mohs 7 stones) are not one to show such exaggerated pits. But it's reflectivity increases. 52 hours is where it got weird. Glass at left has OK polish, obsidian at right has a poor polish. But the fluorite at top has a decent polish. At least heading in the right direction. A hair comb in the reflection of another piece of fluorite in the batch And the little piece of orange coral is way shiny at 52 hours and ready for final polish. The green fluorite is the easiest color of fluorite to polish. Purple and blue not so easy. The sheen obsidian in this test is one of the easiest to polish obsidians. Was happy to get semblance of a shine on the fluorite. More tests to come: screened kaolin with silica removed slurry various abrasive grades of pumice slurries perhaps screened lime slurry perhaps sugar slurry research on other slurry compounds to be tried
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Post by Garage Rocker on Oct 17, 2017 5:21:37 GMT -5
Nice summary, looking forward to seeing final results and conclusion. You're up and at it early today, ready to tackle the world. I love it!
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Oct 17, 2017 5:25:03 GMT -5
Nice summary, looking forward to seeing final results and conclusion. You're up and at it early today, ready to tackle the world. I love it! Early to rise makes (old) man wise. My buddy stole all my fire pit work. I tease him about building counterfeits. Too much spare time Randy. Am behaving though.
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Post by Garage Rocker on Oct 17, 2017 5:34:22 GMT -5
I'm assuming you are talking about your employee handling the labor and not a competitor. I guess that wouldn't be much of a buddy though, if it was someone taking business from you. Counterfeit James fire pits, built by James. Now that would be something.
Idle hands are the devil's workshop.
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jamesp
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Member since October 2012
Posts: 36,154
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Post by jamesp on Oct 17, 2017 6:04:25 GMT -5
The fluorite did not follow the path of the obsidian at all. The obsidian lost it's pits between 12 and 24 hours. Fluorite was pitted from 4 hours to 32 hours. Only in the last 20 hours(probably much less) of 52 hours did it start to loose it's pits and get a smooth surface. No pictures were taken because it was so pitted. Hinting that a finer abrasive may be all it takes to take it from coarse grit to polish. For instance AO 500 may (and should) cut much more material away than harder obsidian. Going from 46 grit to 500 may be possible. Looks like time is being wasted from 120 to 500 grit. Looks like 120 220 400 is butchering it. Fluorite at 32 hours(and probably 40 hours) of 52 hours (gave up on it at 32 hours) Obsidian at 24 hours of 52 hours
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Oct 17, 2017 6:12:33 GMT -5
I'm assuming you are talking about your employee handling the labor and not a competitor. I guess that wouldn't be much of a buddy though, if it was someone taking business from you. Counterfeit James fire pits, built by James. Now that would be something. Idle hands are the devil's workshop. Embarrassing. The Alan Hope counterfeits are looking much better than the James' originals. And he now looks fit as a fiddle and I'm becoming lard ass.
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jamesp
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Member since October 2012
Posts: 36,154
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Post by jamesp on Oct 17, 2017 6:23:43 GMT -5
That's it. No more photos for this test. Weird outcome but quite successful. Did purchase el cheapo AO 220 on Ebay because it seems the AO 80 is redundant. Too aggressive for the soft fluorite. Looks like 220 will remove the deepest pits in fluorite in a few hours. AO 320 would have probably done the job quicker but could not find it. Will do a quick pit removal test with AO 500. Probably not course enough. AO 220 from Ebay, $24 for 10 pounds including shipping www.ebay.com/itm/10-LBS-White-Fused-Alumina-Aluminum-Oxide-220-Grit-Sand-Blasting-/111849277529?hash=item1a0abc8859:g:rmIAAOSwBLlVE6ONStarted 9AM 10/17 2 tbsp garnet 300 2 tbsp 0-1/2 pumice 1 tbsp AO 14,000 1 tbsp Borax Will garnet 300 remove Mohs 7 shine and if how long. How long to remove polish from polished glass. Will garnet 300 remove bruises on added bruised obsidian Garnet 300 breakdown time Will AO 14,000 survive to polish. Polish reusable so how long does it last. Seperation test to see if garnet 300 is rounded or disintegrated. Brown medium 4 hour slurry, Mohs 7 still loosing polish to worse than matte, both heated and not heated flat Polished glass totally with dead flat finish. Obsidian totally flat no reflection
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Post by orrum on Oct 17, 2017 7:25:59 GMT -5
I want to tbe flourite! I have a batch of rough I am afraid to try so keep on mad scientist Jim!!!
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Oct 17, 2017 8:54:34 GMT -5
I want to tbe flourite! I have a batch of rough I am afraid to try so keep on mad scientist Jim!!! It sure is better if you don't have fractured fluorite Bill. The fractures show up loud and clear.
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Post by Garage Rocker on Oct 17, 2017 9:21:33 GMT -5
I'm assuming you are talking about your employee handling the labor and not a competitor. I guess that wouldn't be much of a buddy though, if it was someone taking business from you. Counterfeit James fire pits, built by James. Now that would be something. Idle hands are the devil's workshop. Embarrassing. The Alan Hope counterfeits are looking much better than the James' originals. And he now looks fit as a fiddle and I'm becoming lard ass. Alan Hope may have the brawn, but we know who runs the show...
Hahaha! Can you tell I love the Far Side? And messing with you?
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Post by Garage Rocker on Oct 17, 2017 9:22:54 GMT -5
So, I haven't decided? Is my crow being warmed up just yet? Looks like you're getting there with the fluorite. Getting nervous.
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Post by captbob on Oct 17, 2017 9:52:22 GMT -5
Alan Hope may have the brawn, but we know who runs the show...
Hahaha! Can you tell I love the Far Side? And messing with you?
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Post by Garage Rocker on Oct 17, 2017 10:01:08 GMT -5
If only there was any money in making Photoshop goofs.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Oct 17, 2017 10:11:32 GMT -5
So, I haven't decided? Is my crow being warmed up just yet? Looks like you're getting there with the fluorite. Getting nervous. I should have the right to serve it as I please. Leaning towards raw for the abuse. Trying garnet 300 grit. Hopeful it breaks down quicker, it should. In 2 hours it wiped out the polish on Mohs 7 rocks. Garnet is a feisty abrasive for it to have done that. It also can not be felt between finger and thumb at 2 hours. Must have become 500 or finer already. Running garnet and AO polish. At same time. When the garnet has broken down the AO 14,000 should be there to impart polish. AO polish is reusable, so it should be there when the garnet has disintegrated. 2 abrasives with 2 different hardness at the same time. Coarse the softer of the 2. Will see.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Oct 17, 2017 10:18:51 GMT -5
Embarrassing. The Alan Hope counterfeits are looking much better than the James' originals. And he now looks fit as a fiddle and I'm becoming lard ass. Alan Hope may have the brawn, but we know who runs the show...
Hahaha! Can you tell I love the Far Side? And messing with you?
I'm eating it up w/a spoon. And getting some funny photo shops from a pro.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Oct 17, 2017 10:20:42 GMT -5
If only there was any money in making Photoshop goofs. If only everyone enjoyed them as much as captbob you'd make myllions.
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Post by Garage Rocker on Oct 17, 2017 11:15:46 GMT -5
So, I haven't decided? Is my crow being warmed up just yet? Looks like you're getting there with the fluorite. Getting nervous. I should have the right to serve it as I please. Leaning towards raw for the abuse. I don't mind a gag at my own expense either...
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,154
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Post by jamesp on Oct 17, 2017 11:28:51 GMT -5
I should have the right to serve it as I please. Leaning towards raw for the abuse. I don't mind a gag at my own expense either...
Two more with a crow theme. point specific, scared to know what manipulations the Garage is capable of. Bet your sons have to keep you in line.
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Deleted
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Member since January 1970
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Post by Deleted on Oct 17, 2017 20:38:11 GMT -5
Hmmm...
Randy is a ginger. Interesting.
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