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Congratulations to Bobby1 and his Brazilian Agate Cab!

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Another cabochon contest coming soon!

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 1 
 on: Today at 09:16:30 AM 
Started by 55fossil - Last post by 55fossil
    Beautiful dendritic jasper. This material is super soft, almost like cutting chalk. Just wondered if this is a variety of Sonora jasper or something else. Picture of two cabochons I cut.

 2 
 on: Today at 08:14:44 AM 
Started by R.U. Sirius - Last post by Slabbercabber
You really should have sealed bearings for anything used in lapidary.  As to the second, even having spent my life designing machinery, I've never encountered anything like those.

 3 
 on: October 26, 2021, 03:50:02 PM 
Started by Samstheman - Last post by Samstheman
I have a few thunder eggs I cut open also

 4 
 on: October 26, 2021, 01:42:05 PM 
Started by R.U. Sirius - Last post by lithicbeads
New lortone machines are not lasting bearings included. I have never been more disappointed with a machine as the lortone cabber I bought a few years ago.

 5 
 on: October 26, 2021, 12:19:47 AM 
Started by Samstheman - Last post by irockhound
pics opened and resaved thru photoshop to correct stretching for you, Hope you don't mind

 6 
 on: October 26, 2021, 12:07:37 AM 
Started by Enchantra - Last post by irockhound
YAY!!!!!!!!!!!!!!!   :hello2: :hello2:

 7 
 on: October 25, 2021, 10:03:30 PM 
Started by R.U. Sirius - Last post by R.U. Sirius
I've started refurbishing two Lortone arbors, and discovering along the way just how much I don't know about these kinds of mechanisms. I would really appreciate it if someone here could clarify these few basic questions!

The first arbor is Lortone NS-8. Insert bearings in rubber cushions are held directly in the cast aluminum body.  I found cheap replacement inserts that fit into cushions just fine, but they come with lubrication holes, whereas the original inserts were sealed. Is it a good idea to use lubricated inserts with these old rubber cushions? If so, do I periodically lubricate them by taking them out and placing them in a mount with grease nipples just to refill them with grease? If not a good idea, I will just shell out 2x$20 for a pair of new sealed bearings preinstalled in new rubber cushions.

The second arbor is Lortone NA-8. Bearings (again with rubber cushions) are in flanged aluminum housing with four holes. Is it possible to pull out and replace the bearing/cushion assembly without deforming the flimsy-looking housing?  Or should I be buying a complete replacement? Would this be acceptable - https://www.bearingscanada.com/mobile/product.aspx?ProductCode=kit7427&404 ?

Many thanks in advance for sharing your thoughts!

 8 
 on: October 25, 2021, 07:24:34 AM 
Started by Enchantra - Last post by lithicbeads
Hi !

 9 
 on: October 24, 2021, 07:39:05 PM 
Started by Enchantra - Last post by socalagatehound
Hurray!!! Glad you're back!!!  :headbang: :headbang: :headbang:

 10 
 on: October 24, 2021, 02:28:05 PM 
Started by Enchantra - Last post by Enchantra
Thanks Y'all!   :headbang:

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