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  • On 05/01/2015 03:11 PM, neffk@^$1 [multimachine] wrote: Couldn't you make a drill bit with just a little knowledge and a grinder? It could be as long as you need to get through the spindle. It wouldn't have to have the spirals, especially for use on a lathe. You'd have to back it out more often to remove chips but it's better than impossible. Could probably get away with medium...
    David G. LeVine May 1
  • On 04/28/2015 11:49 AM, neffk@^$1 [multimachine] wrote: I didn't mean to stress a certain type of metal. I only meant to generate some non-wheel-bearing discussion. Also, I've been learning about the topic lately and much of the literature is about white metals, so that's been the un-intentional bias in my writing over the last few days. White "pot metal" has been used as a...
    David G. LeVine Apr 28
  • On 04/27/2015 02:46 PM, stan2778@^$1 [multimachine] wrote: What lathe? It isn't built yet. How do you get the line boring tool shaft through a solid piece of shaft? How do you drill a pilot hole lengthwise in a 12"piece of 1 1/2" cold rolled in Somalia or Ecuador? STAN Let us assume that you have a headstock with no spindle, and a bed with a carriage. A drill bit can be mounted to...
    David G. LeVine Apr 28
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  • On 04/27/2015 12:50 PM, neffk@^$1 [multimachine] wrote: I've been thinking about how to bore out the spindle. Anyone have advice regarding the maximum depth that could be bored in 3rd world conditions? Assume that it's all aligned, there's a tool rest and there's a tailstock with a chuck. Seems like keeping the spindle short makes the operation easier. Many older designs have a...
    David G. LeVine Apr 28
  • On 04/25/2015 05:03 PM, Lance Eggleston gbof@^$1 [multimachine] wrote: I had the end of my left ring finger torn off in a machine accident last week. What data would you need to create a protective and prosthetic end piece? It would be soft and flexible to slide onto and grip the stub, but firm enough to apply pressure to lift things like a book Talk to http://www.siladyne.com...
    David G. LeVine Apr 25
  • On 04/25/2015 08:13 AM, ozzysamuk@^$1 [multimachine] wrote: Hi I'm involved in the early stages of a project to build a mobile workshop to make farm tools. Interested in if anyone has made a 'lightweight' version of the Multimachine? Or has ideas on how you could reduce the weight of the two engine blocks. Are there bits we could cut off? In many cases the parts can be weight...
    David G. LeVine Apr 25
  • On 04/25/2015 03:11 AM, Ian 1 ian_new@^$1 [multimachine] wrote: The dynamic and static loads on lathe bearings are totally different to those experienced in IC big-end bearings (and automotive wheel bearings for that matter ), so I think it is probably a little unfair to use automotive applications as a way of assessing lathe bearing viability Actually no. If a bearing will...
    David G. LeVine Apr 25
  • On 04/24/2015 06:35 PM, stan2778@^$1 [multimachine] wrote: Also I Don't see how any standard gap-bed lathe I've seen would do both sides of a brake rotor in one setup. I do not believe it can, BUT a follower on the "other" side can ensure parallelism in two passes. Dave 8{) -- “Just because someone's a member of an ethnic minority doesn't mean they're not a nasty small-minded...
    David G. LeVine Apr 25
  • On 04/24/2015 03:51 PM, stan2778@^$1 [multimachine] wrote: 20" left swing, 2" bore, 10" x20" right. Scaleable? For a cheap lathe which will do almost everything, shorter will be better. How thick are most brake drums, flywheels, etc? I would bet most are under 5" (125mm), so a 10" (250mm) bed would be more rigid, cheaper, etc. Look at the number of "gap bed" lathes out there...
    David G. LeVine Apr 24
  • On 04/24/2015 03:08 PM, neffk@^$1 [multimachine] wrote: I'm afraid the blade wouldn't be durable enough. KLN For a short-lived jig to level one bed? I would think so. For a long term piece of precision tooling, you are correct. Dave 8{) -- “Just because someone's a member of an ethnic minority doesn't mean they're not a nasty small-minded little jerk.” Terry Pratchett
    David G. LeVine Apr 24