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Campfire Outfitter
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OP
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I have this beautiful antique kerosene lamp. When they moulded the lamp they left a little rim of glass going around the middle of the finger grip. This little rim sticks up about 1/16 of an inch. It digs into your finger when you hold the lamp. I am a carpenter not a glass worker I don't know how to fix it. Is there some kind of round file that I can use to grind down this little rim? I just tried my ceramic stick knife sharpener, it doesn't work.
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Joined: Feb 2010
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Campfire Ranger
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Campfire Ranger
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I’d think a diamond file.
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Campfire Outfitter
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Glass is made up from sand so i think some fine paper might wear it down.
A little at a time.Grits i have no clue about but it's worth a try.
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Joined: Jun 2019
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Campfire Outfitter
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Use a variable speed Dremel tool and a diamond dust coated burr. Slow speed, gentle pressure, and don't let the heat build up. Getting the glass hot will make it crack. Doing the cut under a slow stream of lukewarm water in the kitchen sink might be a good idea. Jerry
Ignorance can be fixed. Stupid is forever!
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Campfire Tracker
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Wet sand with wet/dry paper. Start with 80 or 100 grit and work up.
Old Corps
Semper Fi
FJB
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Campfire Tracker
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I’d leave it as it is, mold line helps to validate authenticity. Additionally, it will have to be polished after being removed or it will look worse than it feels now. If you must, Aluminum Oxide backed sandpaper will do the job.
"When the going gets weird, the weird turn pro." Hunter S. Thompson
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Joined: Jun 2001
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Campfire Outfitter
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A coarse diamond file. You will have many uses for it later, sharpening hoes, shovels, lawn mower blades... 10 bucks at AmazonJohn
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Joined: Dec 2019
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Campfire Ranger
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Campfire Ranger
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Slowly.. There is some sort of abrasive paste they use for grinding lenses... It might be enough to soften the edge a bit..
-OMotS
"If memory serves fails me..." Quote: ( unnamed) "been prtty deep in the cooler todaay " Television and radio are most effective when people question little and think even less.
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Campfire Tracker
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It can be done with a Dremel tool and tungsten bits, but it should be done in water.
One shot, one kill........ It saves a lot of ammo!
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Campfire Tracker
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Vibrating sander, do it all the time for table top edges not a big deal... 400 grit + or -
Padded VA Hospital Rooms for $1000 Alex My ignoree,s will never be Rock Stars on 24 hr campfire.....Like me!!!! What are psychotic puppet hunters?
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I’d try the dremel approach with a small drum sanding attachment.
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Campfire Savant
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I’d try the dremel approach with a small drum sanding attachment. That, keep it cool.
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Campfire Kahuna
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Campfire Kahuna
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Use a variable speed Dremel tool and a diamond dust coated burr. Slow speed, gentle pressure, and don't let the heat build up. Getting the glass hot will make it crack. Doing the cut under a slow stream of lukewarm water in the kitchen sink might be a good idea. Jerry Do as HRL suggests.
Paul
"I'd rather see a sermon than hear a sermon".... D.A.D.
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molɔ̀ːn labé skýla
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Don't sand it, don't grind it. Instead, take a propane or MAPP gas torch (a mini torch would work perfect) and heat it until the glass starts to melt - it will smooth right out. It should only take about 15-30 seconds of direct heat. Then cut the flame and let it cool naturally at room temperature. Seriously, it will work like a charm.
That's how we "polished" the ends of glass rod and tubing in the chemistry lab, except we usually used alcohol burners instead of torches.
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Glass edges (glass panes) are normally ground with diamond wheels at high speed water cooled. However you can easily de-burr an edge like that with a Dremel and small sanding drum just keep it moving as to build up little to no heat. Emery cloth will likewise knock that edge off wrap it around a flat tool like a file and knock the burrs off. probably no need to use too coarse a grit work down and polish if needed. worked in the glass industry 3 1/2 decades.
One man with courage makes a majority....
~Molɔ̀ːn Labé Skýla~
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Campfire Outfitter
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I have this beautiful antique kerosene lamp. When they moulded the lamp they left a little rim of glass going around the middle of the finger grip. This little rim sticks up about 1/16 of an inch. It digs into your finger when you hold the lamp. I am a carpenter not a glass worker I don't know how to fix it. Is there some kind of round file that I can use to grind down this little rim? I just tried my ceramic stick knife sharpener, it doesn't work. A Dremel with a round burr or stone is your friend.
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Joined: Jan 2004
Posts: 11,418 Likes: 2
Campfire Outfitter
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Campfire Outfitter
Joined: Jan 2004
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Don't sand it, don't grind it. Instead, take a propane or MAPP gas torch (a mini torch would work perfect) and heat it until the glass starts to melt - it will smooth right out. It should only take about 15-30 seconds of direct heat. Then cut the flame and let it cool naturally at room temperature. Seriously, it will work like a charm.
That's how we "polished" the ends of glass rod and tubing in the chemistry lab, except we usually used alcohol burners instead of torches. That’s the first thing I thought of as well.
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Joined: May 2010
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Campfire Tracker
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Campfire Tracker
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Don't sand it, don't grind it. Instead, take a propane or MAPP gas torch (a mini torch would work perfect) and heat it until the glass starts to melt - it will smooth right out. It should only take about 15-30 seconds of direct heat. Then cut the flame and let it cool naturally at room temperature. Seriously, it will work like a charm.
That's how we "polished" the ends of glass rod and tubing in the chemistry lab, except we usually used alcohol burners instead of torches. That’s the first thing I thought of as well. Wouldn’t this subject the glass to severe thermal shock?
"When the going gets weird, the weird turn pro." Hunter S. Thompson
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Campfire Outfitter
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You can heat it up but the chance a piece like that could have a small defect in it is pretty high and could easily break or shatter hardly worth the effort. Just sand file or grind it in a careful manner it will only take a few minutes....
One man with courage makes a majority....
~Molɔ̀ːn Labé Skýla~
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Campfire Tracker
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Don't sand it, don't grind it. Instead, take a propane or MAPP gas torch (a mini torch would work perfect) and heat it until the glass starts to melt - it will smooth right out. It should only take about 15-30 seconds of direct heat. Then cut the flame and let it cool naturally at room temperature. Seriously, it will work like a charm.
That's how we "polished" the ends of glass rod and tubing in the chemistry lab, except we usually used alcohol burners instead of torches. That’s the first thing I thought of as well. Wouldn’t this subject the glass to severe thermal shock? Yes it would.
One shot, one kill........ It saves a lot of ammo!
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