Hand Polishing
#1
Posted 18 January 2007 - 10:18 PM
Hand buffing is a simple polishing of the very surface of the glass, to remove light scratches, hazing or fogging of the glass. Since it requires less glass removal, it's not as difficult a process.
The biggest downside to hand polishing and buffing is the expense... Since the process is labor intensive, it is usually quite costly. This makes it a selective process, reserved for marbles that are reasonably restorable and worth the expense of the process in order to save the pontils.
The following are restorers who hand polish and buff...
(Please note that this is an open listing space... Members of this board do not necessarily know, or endorse the restorers listed... Please seek recommmendations or visit the "Feedback file" for individual reputations.)
#2
Posted 19 January 2007 - 04:08 AM
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(1-3/8" single pontil cloud)
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(1-5/8" single pontil cloud)
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(2-1/8" onionskin with floating blizzard mica)
#4
Posted 06 February 2007 - 09:13 PM
#5
Posted 07 February 2007 - 04:55 AM
newby2007, on Feb 7 2007, 03:13 AM, said:
All you need are the pads and a bowl of water. ALWAYS keep the marble and the pads wet when polishing. Cut off most of the sponge back of the pads so you can bend them around the curves of the marble. Start with the first pad with the heaviest grit. This one is used to grind down the damage. Grind it till there are no chips left or faint scars (depending on how far you want to go). Don't touch the pontils with the pads when you want to keep them. Then work your way done to the finest pad and you have nice polished marble. It takes some practice but it works very well. Make sure you don't grind on the same part too long or the marble will go out of round.
#6
Posted 01 April 2007 - 03:35 PM
JVVmarbles, on Jan 19 2007, 10:08 AM, said:
before:

after:

(1-3/8" single pontil cloud)
before:

after:

(1-5/8" single pontil cloud)
before:

after:

(2-1/8" onionskin with floating blizzard mica)
#7
Posted 01 April 2007 - 03:35 PM
JVVmarbles, on Jan 19 2007, 10:08 AM, said:
before:

after:

(1-3/8" single pontil cloud)
before:

after:

(1-5/8" single pontil cloud)
before:

after:

(2-1/8" onionskin with floating blizzard mica)
#8
Posted 01 April 2007 - 03:59 PM
#9
Posted 03 April 2007 - 03:04 PM
AnimalFigurinesGallery.com
#10
Posted 06 May 2009 - 08:12 PM
I use the Glassworks Diamond pads,(8 Grits) and a final with Aluminum Oxide.
I do not add any coatings, or chemicals.
Just the natural glass,
If interested, P.M. or E-mail me
doublet2a@verizon.net
Thanks
Tim
#11
Posted 15 May 2011 - 09:25 PM
#12
Posted 01 September 2011 - 09:05 AM
Ok, I am trying to restore my marbles by hand. I am using the diamond pads and have grinded the marble down to where I want it (see pic). The problem that I am having is getting rid of the milky frosting and get the bright glass look back into the marble. I have a pound of Cerium Oxide in powder form, mixed it with water to make a paste, and tried to hand buff with no luck. I then used a dremel tool with polishing pad and the marble was getting too hot and I was affraid it was going to crack, so I stopped. What is the secret ? or what am I doing wrong ? The diamond pad grit that I was using was a 1800 grit. Do I need one that is finer ? I would really appreciate any help on my restoration project. Regards, Grant
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#13
Posted 03 September 2011 - 07:33 AM
tormar9496, on 01 September 2011 - 09:05 AM, said:
Ok, I am trying to restore my marbles by hand. I am using the diamond pads and have grinded the marble down to where I want it (see pic). The problem that I am having is getting rid of the milky frosting and get the bright glass look back into the marble. I have a pound of Cerium Oxide in powder form, mixed it with water to make a paste, and tried to hand buff with no luck. I then used a dremel tool with polishing pad and the marble was getting too hot and I was affraid it was going to crack, so I stopped. What is the secret ? or what am I doing wrong ? The diamond pad grit that I was using was a 1800 grit. Do I need one that is finer ? I would really appreciate any help on my restoration project. Regards, Grant
Did you use all the steps with the pads? probably you did one of the steps too short so scratches remain. I've been working with the pads for years and it works very well.
#14
Posted 03 September 2011 - 02:31 PM
#15
Posted 04 September 2011 - 06:37 AM
lstmmrbls, on 03 September 2011 - 02:31 PM, said:
I just use the finest grit pad for about 2 hours and the surface becomes really shiny! but as I said earlier, follow the earlier steps precisely, when you use a step for too short a time, you won't get all the scratches out.
#16
Posted 04 September 2011 - 07:51 PM
#18
Posted 07 September 2011 - 04:35 AM
tormar9496, on 01 September 2011 - 09:05 AM, said:
Ok, I am trying to restore my marbles by hand. I am using the diamond pads and have grinded the marble down to where I want it (see pic). The problem that I am having is getting rid of the milky frosting and get the bright glass look back into the marble. I have a pound of Cerium Oxide in powder form, mixed it with water to make a paste, and tried to hand buff with no luck. I then used a dremel tool with polishing pad and the marble was getting too hot and I was affraid it was going to crack, so I stopped. What is the secret ? or what am I doing wrong ? The diamond pad grit that I was using was a 1800 grit. Do I need one that is finer ? I would really appreciate any help on my restoration project. Regards, Grant
The cerium oxide needs to be mixed with water to make a slurry - kind of like what oozes through your fingers when throwing a clay pot on a potters wheel. If it drys out too fast and heats up after only a couple of seconds, you're running the Dremel too fast. Using the small diameter, thick Dremel polish pads (about 1/2" in diameter and about 1/2" thick white, wool-like material for the threaded mandrel) are better than the thin polish pads because they can be soaked in water first and wont dry out so fast. You might want to add an old sewing machine electric foot pedal to your Dremel (the foot pedal plugs into the wall receptacle and the Dremel into the foot pedal) to have variable speed from zero rpm to whatever your tool's max is. Let me know how all this works since I haven't actually tried it out yet but I've laid it all out on a flow chart and I think I got it pretty well figured out.
That marble looks great. Do you have the 3500 grit pad? I forget who makes the ones I'm getting but they're made in Canada and there's 8 grits from 70 - 3500. There are also cerium oxide impregnated hand pads I considered but at the point where the abrasion is so low for polishing I don't think I want to make 500,000 - 1,000,000 revolutions by hand when I can use a Dremel.
I figured out the difference: 500,000 circles by hand @ 180* rpm = 46 minutes (brutal!) vs (approx) 35 seconds by Dremel at 20,000 rpm though I'm not sure if either is sufficient to polish to a wet finish. If it winds up taking 1,000,000 or more revolutions, its a no-brainer (like it wasn't already! lol)
* One could hand polish much faster than 180 rpm but for how long? I sorta did a medium speed test and came up with 3 rps which I multiplied out to the minute/hour.
#19
Posted 08 September 2011 - 06:20 AM
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