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CNC Lathe versus Manual Lathe


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CNC mill spindle turning tips and a discussion of CNC versus manual machining.



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  1. Hi Mr.Cliff, thank you for this very inspiring video, I plan to use my cnc vertical milling as a mill turning. however, I still have something I want to know according to the mill turning. I will be very happy if you would share your experiences about your mill turning.
    The first thing is, is it safe for the spindle since we put a heavy spinning load (the chuck) in the spindle? because if the load is not balanced, it will cause vibrations and I think this is not good for the spindle (correct me if I'm wrong). how could you overcome this issue, or might be the tormach's z-axis construction has strong and rigid enough to overcome this issue.
    Second, how could you securely attach the chuck in the spindle? I saw you used a different R8 collet directly attached to the chuck base, so it means that you have to remove the original R8 collet every time you want to use the chuck right? do you use a power drawbar on your PCNC1100?
    will be very happy if you don't mind to make a new tutorial video about making the chuck base with R8 collet, and how to set it up in the PCNC1100's spindle. 🙂
    I think that's all for now. I really love your videos, very inspiring and helpful. 🙂

  2. Currently have T 770 with RapidTurn and a South Bend 8 inch with DRO . To make parts for the Fly Reels I make I actually use all three machines. Just have to figure which operations I am going to do with which machine to get best accuracy, finish and speed is for me a secondary issue. It's also nice to still do some manual turning. Love your videos and explanations.

  3. Thanks for that video. I was about to purchase a lathe and convert it to CNC but now seeing your mill doing such a good job of turning parts this weekend will be spent looking for a large collet chuck for my CNC mill. Are you in NZ. Cheers Dave.

  4. While I've never run a CNC and you did say "for simple parts" your obviously correct as long as you have a REPEATABLE quick change tool post that can be trusted to replicate its tool position during tool changes to take advantage of that tool specific DRO setting. Start adding radiused parts, tapers etc and I'd think CNC would soon drop the parts count to where CNC is faster. And maybe there a bit specialized, but for small parts a proper and well set up screw machine would change that parts count by a lot. Randy Richards demos of his turret set up on his lathe changes things again. Tooling cost is another factor so it gets a little complicated to say 100% for sure at what point CNC is automatically the best choice.

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