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Post by mohs on Sept 30, 2012 2:01:24 GMT -5
I’m working a piece of obsidian I sanded it out on the expando wheel to the 220 grit . Then I went to finish it on the Pixie starting at the 280 grit Nova. Grind grind grind and coming off that wheels still scratches. So I take it back outside and work it over again on the exando sanding. 100, 120, 220 grit… Bring the piece back in the house to finish on the Pixie. Again scratches! Again I go back out side start the same process. Bring it in and work on the Pixie. No Luck! Its late! This as been going on for hours! I’m lousy grinder!. But NO! I can’t rest with this catastrophe ! I get back up and take the cab outside. This time I work the cab through all stages of grits on the expando. 220, 320, 400, 600, 1200. I started noticing scratches disappearing at 320 phase. UH HHA! My 280 grit Nova wheel is toast ! Geesh I didn’t figure THAT out quick enough.  Now I can sleep sweet dreams   O yeah Ed |
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itsandbits
freely admits to licking rocks
Member since March 2012
Posts: 825
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Post by itsandbits on Sept 30, 2012 2:09:21 GMT -5
glad you fiigured it out :<)
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Post by mohs on Sept 30, 2012 10:11:32 GMT -5
Thanks Man! I had noticed a worn spot but figured the whell still had life Perhaps it does but my skill may not be sufficient enough to get the most out a uneven running wheel Anyway time for a new one its not particularly in my budget but the grind must go on I has set a goal of 100 rock'n hearts by February I'll need all the help I can get with work, weather, skill level ect... Attachments:
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The Dad_Ohs
fully equipped rock polisher
Take me to your Labradorite!!
Member since September 2012
Posts: 1,860
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Post by The Dad_Ohs on Sept 30, 2012 10:15:09 GMT -5
nice heart... do you plan to sell them or are they gifts??
either way I wish you luck.. your grinding skill may be lousy... but its a whole lot better than mine is !!!!!!!
Keep on... keeping on !!
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Post by Pat on Sept 30, 2012 12:34:22 GMT -5
Good heart, of course!
That's quite a sore on that wheel. Sweet dreams!
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Post by mohs on Sept 30, 2012 13:45:35 GMT -5
Yep it definitely as a boo boo  I think much of its wore outness in the the time frame came from inexperience but it is 18 months old and a lot rocks have been ground on it I don't relish the thought of dismantling the machine to replace the wheel never done it before but had all kinds of early problems with he pump that I got corrected so I'll finger it out O the joy ;D Thanks Pat! |
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Post by mohs on Sept 30, 2012 13:53:34 GMT -5
nice heart... do you plan to sell them or are they gifts?? either way I wish you luck.. your grinding skill may be lousy... but its a whole lot better than mine is !!!!!!! Keep on... keeping on !! Hi Mario Well I am hoping this season to start a web site although I... mostly barter and gift them but cost is starting to eat into my rock bottom so hopefully some supplemental income I need to start a wear a Rock'n Heart Day Ha Ha as far as skill goes rock polishing a trick thang once I get all the bugaboo figured out I'll do a tutorial O & I've encountered just about every strange problem known to a rock grinder so it should be great tut Ha Ha anyway I just put the finishing touches on the sweet dream heart picture coming stay tunE  |
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Charles
starting to spend too much on rocks
Member since May 2012
Posts: 161 
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Post by Charles on Sept 30, 2012 14:32:30 GMT -5
GREAT LOOKING heart. Love it. Haven't been able to follow everything lately, but I saw this and thought I'd toss this out. When I was just beginning this hobby, addiction, or such someone saw me struggling in the club shop, tryng to figure out where some scratches came from. He showed me when sanding and polishing, rotate the stone 90 degrees each time. For instance on the 220 or 280 diamond wheel, this was before diamonds were invented , if the stone is an oval, sand on the 220 length ways and then when you move to the next wheel, sand the stone on the short axis. On the next wheel go back to the long axis. This way each time you check the stone after sandidng and new scratches show up you know which wheel they came from. Hope this helps, it has me on several occasions, I found a few years ago this even works on my pixie, Charles |
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Post by mohs on Sept 30, 2012 20:54:04 GMT -5
That's a great method Charles
well explained !!
actually I was trying that technique
and it works well
I just got myself confused
staring at irritating scratches that weren't disappearing
a bad dream
then I woke up
I think Ha ha
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Post by mohs on Sept 30, 2012 20:59:22 GMT -5
 the finished product... sort of I'm pretty happy but its over ground so much it is very thin luckily I have no shortage of obsidian so I'll get plenty of chances to improve Thanks for reading my ramblings means a lot to me ED |
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Post by kap on Sept 30, 2012 21:50:47 GMT -5
Ed I find that obsidian is the one that gives me the most trouble if I have any wheel stage problems. But you done a great job in the end.
Keith
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Post by mohs on Sept 30, 2012 22:57:15 GMT -5
Yes- obsidian with it glassy surface
reflects back every little everything
and when it scratches it magnified
the one half of that heart isn't obsidian
actually I think its ..
well I'm not sure what it is ?
Thanks Keith !
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Post by johnjsgems on Oct 1, 2012 11:56:36 GMT -5
Even if you wore through to the foam in wheel center the outer edges would still work (yes, I get them at cost and still too cheap to replace if there still is a little diamond left). If you are trying to sand on the bare spots you are likely scratching the obsidian with the foam or the glue they use.
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Post by mohs on Oct 1, 2012 12:31:48 GMT -5
Hi John
I think the wheel still lots of life life
work around the bald spot
I'm going to be ordering a set of Nova from you
or maybe just that one wheel
Is the dismantling of the Pixie
well,,,, is it an easy thing to do
after its done a few times?
Ha Ha
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Post by johnjsgems on Oct 1, 2012 14:17:51 GMT -5
A little harder than the Genie but you can handle it. I have not looked at one in years but as I recall you need an allen wrench to remove the bearing caps and then taking wheels off is pretty straight forward.
John
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Post by christopherl1234 on Oct 1, 2012 21:39:18 GMT -5
Your gonna need a long allen wrench. I always like to take the bottom off too. Makes it easier for me. Flip the whole thing upside down and got to work.
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Post by mohs on Oct 1, 2012 23:50:29 GMT -5
Thanks Chris!
I may wait till I can afford to buy a wheel
or, maybe not.
I might just dissemble it for the fun of it
O yeah
Ed
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Post by Roller on Oct 2, 2012 0:37:42 GMT -5
this might be worth a shot here .. something very simlar had happened to me once and i noticed my wheel was starting to go !!! but i quit for the day and came back to it the next day and hit it with a sanding stick and tried a different rock and it was working good again .. of course ten rocks later it was not polishing again .. i have repeated so far about 4 times and once in awhile i just need to let the wheel cool down if that makes any sense at all .. eventually i will need to replace but its been working for me .. or maybe im just crazy who knows ...lol ps wash stone in between wheels ..
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Post by johnjsgems on Oct 2, 2012 8:00:57 GMT -5
Yes Greg, you are probably crazy but you are in good company as we all play with rocks. Using a dressing stick may work but not recommended as particles of the stick can embed in the wheel. I think what you are experiencing is letting the wheel dry out. I use my Genie very seldom but grind and the machine sits a long time before using again. I've never had a wheel glaze over. I know a guy that grinds full time that either dresses or reverses his wheels every few hours because he notices them slowing down. I don't know why but it seems to be the case. In this case though the problem is he has worn through the diamond surface and is seeing either the seamless belt or foam underneath. No amount of dressing will bring the diamonds back.
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Post by mohs on Oct 2, 2012 8:58:39 GMT -5
LOL John!!! I love it !
I woke up early this morning just to play with this rock heart. ;D
I'm outside re-sanding it. I took the time to dop it last night,
I just feel that I can get a smoother grind out of this obsidian
on my sanding wheels.Wish me luck. It's a real thin heart.
Really appreciate the advice guys!!!
Ed
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