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  #1  
Old 05-15-2015, 01:42 AM
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Default cube in a cube

https://youtu.be/AuS6HDHc7XE
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  #2  
Old 05-15-2015, 04:37 AM
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Interesting trinket. I am more impressed that he can do that with a super basic lathe with no power feeds and just a 3 jaw chuck. Not sure I would love the hot glue slinging everywhere as the workpiece heated up though
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  #3  
Old 05-15-2015, 07:41 AM
Lew Hartswick Lew Hartswick is offline
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I'm impressed, that is very nice machining. I wish there were good dwgs. of the tool shape used for the internal grooving and the dimensions.
Would make a good proj. for the really advanced students. :-)
...lew...
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Old 05-15-2015, 09:08 AM
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That is cool.

Cerrosafe would be a good alternative vs. hot melt glue, but a bit costly.
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Old 05-15-2015, 11:08 AM
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Quote:
Originally Posted by Lew Hartswick View Post
I'm impressed, that is very nice machining. I wish there were good dwgs. of the tool shape used for the internal grooving and the dimensions.
Would make a good proj. for the really advanced students. :-)
...lew...
Just for shits and giggles I started to make a drawing of the assembly. I haven't finished but as you get into it the geometry of the tools becomes fairly obvious. The only "tricky" one is the tool use to make the "undercut" which leaves a square corner inside the smaller circle--the rest is just drilling and boring.

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Originally Posted by Shade Tree Welder View Post
...Cerrosafe would be a good alternative vs. hot melt glue, but a bit costly.
The final operation after the glue is applied probably doesn't build up much heat which is why the glue works--for all we know he might be stopping along the way to allow the part to cool. Cerrosafe would be a perfect alternative, in fact it would probably hold the parts better; not that it seems to matter...
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Old 05-15-2015, 12:04 PM
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Quote:
Originally Posted by LKeithR View Post
The only "tricky" one is the tool use to make the "undercut" which leaves a square corner inside the smaller circle--the rest is just drilling and boring.
I know you know how to make one. I grabbed some frames from the video. It looks like he just welded a 'something' on to the end of a bar. I understand people always have a something that will works.
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  #7  
Old 05-15-2015, 06:35 PM
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Neat project. Thanks for sharing.

Brian
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Old 05-16-2015, 01:05 AM
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I was hoping someone would say "oh, I can do that".
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Old 05-16-2015, 06:10 AM
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Quote:
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I was hoping someone would say "oh, I can do that".
I'll have to put it on the to do list. I could do it, just when can I make time to do it. Do I have any takers to buy it when I am done for time and material?
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Old 05-16-2015, 11:15 AM
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Quote:
Originally Posted by RancherBill View Post
It looks like he just welded a 'something' on to the end of a bar...
I think it's just a cheap carbide tipped boring bar that he's ground to suit the application--notice how the shank has a slight taper...
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