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Post by Drummond Island Rocks on Jan 26, 2020 22:41:33 GMT -5
I played around with some jamesp glass over the weekend. This stuff sure does grind quick and takes an easy polish. A little extra care required at the hard wheels and at the groove grinder to avoid chipping though.  Thanks for looking Chuck |
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Post by rockpickerforever on Jan 26, 2020 23:21:01 GMT -5
I played around with some jamesp glass over the weekend. This stuff sure does grind quick and takes an easy polish. A little extra care required at the hard wheels and at the groove grinder to avoid chipping though. Thanks for looking Chuck Nice polish on those, the groove wraps are really nice. Good job! |
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Post by knave on Jan 26, 2020 23:23:16 GMT -5
Just look at that psychedelic bling. Groovy man..
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Post by fernwood on Jan 27, 2020 5:33:39 GMT -5
Groovy glass pendants. Love them.
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Post by toiv0 on Jan 27, 2020 6:42:30 GMT -5
Yep I think also think groovy in a groovy kind kind Of way. Your groove wraps fascinate me.
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Post by RocksInNJ on Jan 27, 2020 7:00:41 GMT -5
It would be cool to hang them on the tree at Christmas. You wouldn’t need any lights lol and you’d have a groovy disco tree.
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jamesp
Cave Dweller 
Member since October 2012
Posts: 36,607
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Post by jamesp on Jan 27, 2020 7:17:45 GMT -5
Those are perfect Chuck. I love your groove wraps and hope you will make more for me in the future.
Wife, nieces, cousins and aunts have been bugging me for some glass pendants.
My MOL had one of your Norena groove wraps and wore it regularly. Her name was Norene.
This particular glass does like to micro-chip when sawing and drilling with diamond cutters at edges.
I had to chamfer drilled holes due to similar chipping.
Drills appear to be ~100 grit diamonds and are simply too course.
Concrete, tile, porcelain, glass saw blades range from 50 to 150 grit diamonds.
The 150 grit glass blades chip by far the least but cut slow.
No concern since the chipping should be difficult to see.
I apologize for the bubbles too. I know they had to create problems.
I have no idea why that glass polishes quickly because it is soft.
Most hand blown glass is much harder yet both are common soda-lime glass.
Thanks again.
Jim
P.S. The drums that fit on those glass grinders do come in fine medium coarse grit.
Not sure about the blades.
Same game - coarse for shaping stained glass, fine for a more finished edge.
I will look at the blades at the glass supply to see if they are made in finer grits.
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Post by Drummond Island Rocks on Jan 27, 2020 7:59:07 GMT -5
Those are perfect Chuck. I love your groove wraps and hope you will make more for me in the future. Wife, nieces, cousins and aunts have been bugging me for some glass pendants. My MOL had one of your Norena groove wraps and wore it regularly. Her name was Norene. This particular glass does like to micro-chip when sawing and drilling with diamond cutters at edges. I had to chamfer drilled holes due to similar chipping. Drills appear to be ~100 grit diamonds and are simply too course. Concrete, tile, porcelain, glass saw blades range from 50 to 150 grit diamonds. The 150 grit glass blades chip by far the least but cut slow. No concern since the chipping should be difficult to see. I apologize for the bubbles too. I know they had to create problems. I have no idea why that glass polishes quickly because it is soft. Most hand blown glass is much harder yet both are common soda-lime glass. Thanks again. Jim P.S. The drums that fit on those glass grinders do come in fine medium coarse grit. Not sure about the blades. Same game - coarse for shaping stained glass, fine for a more finished edge. I will look at the blades at the glass supply to see if they are made in finer grits. Thanks Jim- The chipping is not really an issue. As soon as I noticed it I just adjusted. Don't cut as close to the template line leaving more stock to remove and then use the 220 hard wheel to finesse the shape. Also only use the 220 hard wheel on the doming. 80 grit diamond wheel not used at all. The glass is soft so the 220 wheel cuts it like butter anyway. I do have the edge grinding cutters for my glass grinder. Probably not a bad idea to use that next time. Chuck |
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,607
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Post by jamesp on Jan 27, 2020 8:29:56 GMT -5
Leaving extra material at chipped edges for removal with finer abrasives has been my ploy. Prior to tumbling.
Slabbing up a big brick of glass is best done with an aggressive saw blade due the large task.
And a powerful high speed tile saw with high water flow.
Final preform cuts are best done with a slower cutting fine glass blade.
Using the 220 wheel for shaping makes perfect sense. And should not wear a sintered 220 cab wheel significantly.
$12 eight inch electroplated imported 100 grit lapper diamond wheels do have a life when shaping mass quantities of this glass though.
I have noticed almost zero wear using sintered diamond wheels on soda lime glass.
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Post by rockjunquie on Jan 27, 2020 8:30:52 GMT -5
Very nice! You guys make a groovy team.  |
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,607
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Post by jamesp on Jan 27, 2020 9:31:38 GMT -5
Very nice! You guys make a groovy team.  |
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Post by hummingbirdstones on Jan 27, 2020 9:47:51 GMT -5
Those pendants are outta sight!
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,607
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Post by jamesp on Jan 27, 2020 9:54:22 GMT -5
Chuck Snowflake is glass. Does it have chipping issues ? From looking at your precision groove on this pendant chipping must not be an issue. Add the beveled edge on the back side.  |
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Post by Drummond Island Rocks on Jan 27, 2020 10:12:48 GMT -5
Chuck Snowflake is glass. Does it have chipping issues ? From looking at your precision groove on this pendant chipping must not be an issue. Add the beveled edge on the back side. The groove bit is 220 so it is not really prone to chipping. With the glass and obsidian I do cut the grooves with a slightly modified approach. With rocks I will often hog to depth and cut the groove in one pass. With the glass I will make several shallower passes around until I get the desired depth. Really should do that with rocks too. Same approach as machining wood or metal. Chuck |
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,607
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Post by jamesp on Jan 27, 2020 11:24:23 GMT -5
I see. Obviously you scored a fine groove on the above.
Hogging once or multiple passes - gives me nerve issues.
Precision stuff man.
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