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Type: Posts; User: atomarc

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  1. Replies
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    Re: MD001 cnc conversion

    Beautiful enclosure..well laid out and organized.

    Stuart
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    Re: New ballscrews?

    Yes..hope for experienced kids on the assembly line (floor).:banana:

    I hadn't noticed the note in the description of the ball screw about each nut being individually loaded for that particular...
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    Re: New ballscrews?

    The ball screw you linked in the original post is most certifiably a Chinese unit, a clone of hundreds of other floating around the net. This is not to say you can't get respectable backlash with...
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    Re: New ballscrews?

    Any ball screw of hobby size made in China will be a rolled screw, and I'm very doubtful that with a single ball nut, the backlash could be anywhere near 6 tenths. Any screw with double nuts can be...
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    Re: Re-ball ball nuts

    I'll make a few comments, maybe helpful, maybe not. Does your application have room to double nut your ball screw? This gives you the ability to "dial" out any backlash. My second thought would be to...
  6. Thread: What is this?

    by atomarc
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    3,426

    Re: What is this?

    Did you look closely at the link I supplied..that Morse taper shank unscrews which means you can screw in a shaft of your liking. I'm now understanding you don't have the capabilities to machine any...
  7. Thread: What is this?

    by atomarc
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    3,426

    Re: What is this?

    That gear reducer is a typical right angle unit which has a keyed shaft out of the side your chuck is attached to. If your setup was built/assembled by a hobbyist, the connection between chuck and...
  8. Thread: What is this?

    by atomarc
    Replies
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    3,426

    Re: What is this?

    Because the setup you had previously was custom made, not off the shelf, it's not realistic to expect to find off the shelf parts and pieces to swap a 3 jaw for a 4 jaw...you or someone else is going...
  9. Thread: What is this?

    by atomarc
    Replies
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    Re: What is this?

    Did you notice the link I included in post #24? https://www.amazon.com/TORRENS-Centering-Lathe-2-5inch-Premium/dp/B09C8MVDN8
  10. Thread: What is this?

    by atomarc
    Replies
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    Re: What is this?

    Had the original pictures shown the back of the reducer it would have been apparent that it was a hollow shaft unit and removing that shaft, along with the attached chuck, would have been even easier...
  11. Thread: What is this?

    by atomarc
    Replies
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    Re: What is this?

    While I'm not sure, I think this thread has gone off the rails. The original purpose of the thing was to machine little pieces of wood into God knows what. The funky little mini-chuck has morphed...
  12. Thread: What is this?

    by atomarc
    Replies
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    3,426

    Re: What is this?

    It's a mini lathe chuck, typically used for turning pens or very small wood items. ...
  13. Thread: What is this?

    by atomarc
    Replies
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    3,426

    Re: What is this?

    That style chuck doesn't come with the mounting bolts, they were added to attach to the gear reducer adapter plate (home made, it appears). The funky scroll system allows that chuck to be very low...
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    Re: Central Lubrification - Ways and Ball-Screw?

    We retained the small Zerks on the linear rail cars and grease them regularly or as needed.

    Stuart
  15. Re: Upgrading my CNC DIY Lathe just need a couple of answers please.

    My two cents...for a small lathe like that, you'll probably be using higher R PM's more than slow ones, but having said that, I think a sheave ratio to achieve the speed you've listed would be good....
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    Re: Mini-lathe crosslide issue

    It appears that the dovetail with the step was ground so only a portion of the flat surface rides on the mating flat surface of the carriage. I think its fine. If you roughly assemble the cross slide...
  17. Replies
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    Re: Mini-lathe crosslide issue

    Could you draw a picture from an end view showing the surfaces and that step. I'm having a hard time visualizing those two surfaces, the step, and how they're situated on the bottom of the cross...
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    Re: Mini-lathe crosslide issue

    It appears to me that you have positioned the component in that location for filming purposes only as that's not where it goes...I don't believe. Having said that, have you mounted its corresponding...
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    Re: STAY AWAY FROM ARIZONA VIDEO

    As noted above, Dave is a gentleman and as honest as the day is long. He has offered many of us help with no expectation of remuneration, if only to further the cause of the hobby for the sake of...
  20. Replies
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    Re: Central Lubrification - Ways and Ball-Screw?

    My two cents...we did a similar build on a G0704 (CNC) utilizing ball screws, but dumped the X and Z axis ways in favor of linear rails, and added one shot lube to the remaining Y axis as well as...
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    Re: STAY AWAY FROM ARIZONA VIDEO

    There must be either some type of mix up or some extenuating circumstance because Dave is a super, stand up guy in my experience. Lets hope it isn't a health issue.

    Stuart
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    Re: G0704 Tapered Bearing Upgrade

    Those bearings worked perfectly for our build..should do the same for you. We were judicious in the use of Kluber on the spindle bearings, took our time to run them in, fine adjust them and watch the...
  23. Thread: THE GRIZZ

    by atomarc
    Replies
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    Re: THE GRIZZ

    A little interesting side note. When we built the Grizz,, there was a 'top heavy' concern which we somewhat addressed by adding heavy plate to the bottom of the toolbox/base. On December 21st there...
  24. Thread: THE GRIZZ

    by atomarc
    Replies
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    132,005

    Re: THE GRIZZ

    jbothell,

    Thank you for the nice comments, it was a fun father and son project, and I certainly learned as much as my son did as this was my first foray into anything other than manual machining....
  25. Re: Will build a Benchtop mill including Castings! Comments appreciated.

    It's been 3 years and not a peep from the OP. Guess that's how things go in 'Hobby Town'...too bad, it looked like a viable little machine.

    Stuart
  26. Replies
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    Re: Enclosure for X2 or X3 Mill

    Wow..that's an interesting setup. It looks familiar to me, but I'm not sure why!:D

    Stuart
  27. Re: Ball screws are a bit crunchy. :) What to do?

    In reality, it's not that complicated to dissemble the ball nuts in entirety, clean the balls, clean the nuts and reassemble. It might seem daunting...but it's really quite easy. Doing it this way...
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    Re: Current ballpark cost build vs buy~

    Jeff,

    This may not be a reasonable comparison as I sort of went nuts on my project, but when it was all said and done, it was 11K.

    A person could probably purchase a small commercially...
  29. Re: Is it OK using double ball nut on BF20L Y axis?

    Suat,

    I was not trying to be 'snarky' in my response to your question. The pictures I found of a BF20L show no enclosure, so I had no idea following my suggestion would be so difficult for you. If...
  30. Re: Is it OK using double ball nut on BF20L Y axis?

    Do you not have the technical abilities to disassemble that axis and see for yourself if a double-nut will fit and allow full range of motion?

    Stuart
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