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1st Nov 2018, 04:17 AM #1Intermediate Member
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Machined souvenirs - Turner's Cubes and Balls
Hello everyone! My name is Ivan. I'm new to this forum, but metalworking is my hobby for the last 12 years.
I've built CNC Lathe recently and make these metal puzzles that every chipmaker knows.
2.5" - 63mm ball, seven levels totally
b2p5_1.jpgb2p5_2.jpgb2p5_3.jpgb2p5_5.jpgb2p5_6.jpg
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1st Nov 2018, 04:23 AM #2Intermediate Member
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2" - 50mm, six levels
CSC_3779.jpgCSC_3783.jpgCSC_3784.jpg
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1st Nov 2018, 04:26 AM #3Intermediate Member
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1-1/4" - 31mm, four levels
CSC_3663.jpgCSC_3662.jpgB1_3.jpg
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1st Nov 2018, 04:28 AM #4Intermediate Member
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1st Nov 2018, 04:30 AM #5Intermediate Member
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2" cube, 6 levels
Cube5_1.jpg
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1st Nov 2018, 04:32 AM #6Intermediate Member
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Unseparated cubes, 2"
C_unseparated.jpgC_unseparated_glass.jpg
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1st Nov 2018, 04:34 AM #7Intermediate Member
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1" - 25mm cubes, four levels
C1_1.jpg
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4th Nov 2018, 01:17 AM #8Most Valued Member
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- Jul 2016
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They are some pretty good surface finishes, how much finishing work are you having to do? And how are you deburring all those complex inner surfaces?
Very impressive
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6th Nov 2018, 04:04 AM #9Intermediate Member
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Nice to see that at least one person noticed finishing done! Thanks!
Deburring and finishing is a real challenge. Since I tried to minimize manual work I experimented with my ball mill a lot.
DSC_0684.JPG
First, I run it with no media for 30min - 2hours with just the balls inside at quite high speed. The balls spin inside, all internal figures have multiple collisions. The burrs are being removed during this procedure.
Second, I run it for ~ 1 hour with dry polishing powder at low speed. This step removes aluminum chips, dust, grease, and slightly polishes the inside surfaces.
The cubes are not spinning easily . So I remove burrs from external cubes manually. Thanks God, the cube has just 12 ribs! Dry polishing works fine for cubes.
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6th Nov 2018, 04:15 AM #10Intermediate Member
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6th Nov 2018, 08:13 AM #11Most Valued Member
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- Nov 2007
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I like the idea of driving a tumbler in the lathe. Can you please provide some info on the polishing powder you use?
Chris
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6th Nov 2018, 08:53 AM #12Most Valued Member
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I'd be really careful using a tumbler in the lathe, because if the lid came off microscopic grit will kill your machine and embed all over the joint.
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6th Nov 2018, 09:17 AM #13Most Valued Member
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Good point. The lid on the one in the pic looks pretty secure. A plastic drop sheet would be good insurance. My main worry would be the motor overheating due to lack of cooling air for hours at a time.
Chris
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6th Nov 2018, 09:49 AM #14Intermediate Member
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6th Nov 2018, 09:51 AM #15Senior Member
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- Apr 2013
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- Toowoomba Qld
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Either some really good photography or some nice looking parts !
Would make awesome desk toys for the office, are you making them to sell or just to show off to your friends / family ?
Checking out the other clips on your youtube channel looks like you have had a few issues with birds nesting when at least doing the rough turning. Have you played around much with speeds & feeds and depth of cut to see if you can engage the chip breaker on the insert ? (or tried different chip breakers?)
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