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  #11  
Old 02-21-2018, 11:05 PM
Rlee1972 Rlee1972 is offline
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Might be basic looking to you Mr Martin but quite complex to me!

Hope to be able to use my rotary after the camp this year
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2018 Cobra Elite 5 x 10
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  #12  
Old 02-22-2018, 11:43 AM
de5 de5 is offline
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I had products that worked well on the rotary and made money, but I discontinued them for a number of reasons:

1. Lack of decent dust collection.
2. Each piece had to be moved to the lathe for sanding after machining and I didn't enjoy that.
3. I really didn't like working close to the chuck and tailstock, and because I use expensive exotic woods, I didn't want to add extra waste on the ends to move further away.
4. The rotary is pretty slow, but I don't consider that a deal breaker.

I might reconsider #3 and waste a little wood to bring this instrument back because I have had a lot of requests for it over the years.
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Cobra 404 ATC with 12 tool positions & 4th Axis (2012-present)
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  #13  
Old 02-22-2018, 02:31 PM
eph210 eph210 is offline
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Some of my products on the rotary axis require machining right to the ends of the stock. In order to keep a safe distance from the headstock and tailstock I have ends that I attach either by bolting on or I use hot glue to attach them. My walking sticks have a 1/4-20 threaded insert in either end that allows me to bolt on the extra ends. Other items like bowls and mugs are too large to fit in the jaws anyway so the glued on ends work well. Releasing the hot glue is readily accomplished using isopropanol.
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  #14  
Old 02-22-2018, 07:16 PM
rcnewcomb rcnewcomb is offline
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Location: San Jose, California, USA
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Quote:
Originally Posted by eph210 View Post
Some of my products on the rotary axis require machining right to the ends of the stock. In order to keep a safe distance from the headstock and tailstock I have ends that I attach either by bolting on or I use hot glue to attach them. [...snip...] Releasing the hot glue is readily accomplished using isopropanol.
Great tip, Euan. Thanks!
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  #15  
Old 02-22-2018, 11:12 PM
de5 de5 is offline
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That's a good idea Euan. Will you elaborate a little bit on how you do this...type of inserts, etc. Is it a problem keeping everything centered?
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Charlie Hind
Cobra 404 ATC with 12 tool positions & 4th Axis (2012-present)
(2006-2012 - K2 CNC... sold in 2012 to buy the Cobra)
WinCNC
www.hindocarina.com
http://facebook.com/hindocarina
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  #16  
Old 02-23-2018, 01:13 AM
eph210 eph210 is offline
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My walking sticks are three part style, a handle and a 2 part shaft. My customer likes that for shipping. I cut the blanks to 24" long and then clamp them vertically on a bracket on the side of the Stinger where the rotary would normally reside. I use the Stinger to cut a stepped hole on each end for the insert. I use the longest flanged insert that I can get from Lee Valley.
I made the end blocks on the Stinger so that the hole is in the centre and chose a bolt so that the unthreaded section of the bolt fills the hole. In order to prevent the shaft from loosening I apply some hot glue to the mating faces at the headstock end.
If the end blocks are made accurately, everything rotates around the insert position.
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  #17  
Old 02-23-2018, 09:32 AM
de5 de5 is offline
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Thanks for that Euan. I didn't know about the alcohol trick. That will come in handy!
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Charlie Hind
Cobra 404 ATC with 12 tool positions & 4th Axis (2012-present)
(2006-2012 - K2 CNC... sold in 2012 to buy the Cobra)
WinCNC
www.hindocarina.com
http://facebook.com/hindocarina
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