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  1. Re: Mark's EPOXY Granite 18"x20"x20" (700mmx780mmx780mm) vertical mill build

    Thanks! The ball screw track in the base is 6.5" wide by 7" deep. The ball screw is a 40 mm shaft and the nut is 4.75" diameter- 120 mm range. On the other hand, the 1.8 kw servos I am driving it...
  2. Re: Mark's EPOXY Granite 18"x20"x20" (700mmx780mmx780mm) vertical mill build

    Update:

    I was able to partially finish the shear panels on the machine's sub-base and got the front and back one's welded on. Did a test fit of the base on the sub base and it is really solid. ...
  3. Re: Mark's EPOXY Granite 18"x20"x20" (700mmx780mmx780mm) vertical mill build

    Update:

    I was able to get a 300 lb scrap piece of steel to make the bearing blocks. It is 3" thick. Moving it and cutting was interesting!

    393944

    Here is the design for the bearing...
  4. Re: Mark's EPOXY Granite 18"x20"x20" (700mmx780mmx780mm) vertical mill build

    Update:

    I am back to work on this build following moving from CA to WA and setting up my shop. I also have been an instructor at the Bainbridge Barn- a 20000 square feet 11 studio non profit...
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    Re: 13x40 Jet Lathe CNC conversion with vfd

    I used surplus ground ballscrews from ebay, diy bearing blocks and carriage assembly, DMM Tech Dyn 2 servos and drives. They have schematics for a lot of different servos and steppers and there are...
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    Re: 13x40 Jet Lathe CNC conversion with vfd

    ...
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    Re: 13x40 Jet Lathe CNC conversion with vfd

    I had random issues where mach would stop working. Threading with the smoothstepper didn't work although I think they may have finally gotten to it. The pokeys board was just wasn't stable so for...
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    Re: 13x40 Jet Lathe CNC conversion with vfd

    I had random issues where mach would stop working. Threading with the smoothstepper didn't work although I think they may have finally gotten to it. The pokeys board was just wasn't stable so for...
  9. Replies
    34
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    8,129

    Re: 13x40 Jet Lathe CNC conversion with vfd

    Update:

    I recently made some significant changes to this build. Scraped Mach 3 and 4 as I just couldn't get everything to run right, experience periodic random issues. I tried both a...
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    8,129

    Re: 13x40 Jet Lathe CNC conversion with vfd

    I just upgraded to Mach4 and it is working fine. A few bugs on homing but am really happy with how it cuts. Here is a link to a short video I recently made of it cutting in Mach 4 and fusion 360...
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    Re: DMM and Mach4 problems

    Thank you for the suggestion-
    I was able to correct the z direction by changing the direction pin to neg. The z axis limit issue still is the same with the switch going on and then Mach stops till...
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    Re: DMM and Mach4 problems

    Update:

    I have the DMM servos and drives working with Mach4 and the Smoothstepper. I was able to cut a 1/2-20 thread and made the gcode with fusion360 and everything cuts fine. Homing though...
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    Re: DMM and Mach4 problems

    Update:

    I got Mach4 working with the dmm tech bob and smoothstepper :)

    It appears to be a hardware issue with my old XP windows machine I was using for mach3. I took a cheap windows 8 box and...
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    Re: DMM and Mach4 problems

    Thanks for the suggestion but unfortunately, I can confirm that jumping the estop did not work. I have previously done that trouble shooting mach3. Considering that I can reset the estop running...
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    Re: DMM and Mach4 problems

    I followed the instructions from this video to setup the ess to communicate with it. It shows the correct led with a solid and fast flashing one also.

    ...
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    Re: DMM and Mach4 problems

    The servos work fine in mach3 and I used the same settings for pins 2 dir and 3 step for x and then mapped in mach4 after setting up in the ess config in mach4.
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    DMM and Mach4 problems

    I have a RF45 clone and a 13x40 lathe with DMM servos, drives and BOB. I just got Mach4 and added an ethernet Smoothstepper for the lathe. I configured the ESS and it works fine in Mach3 but I...
  18. Re: Large concrete, epoxy high speed vertical CNC mill.

    I am really looking forward to seeing you progress after the last machine. Post lots of pics!
  19. Re: Mark's EPOXY Granite 18"x20"x20" (700mmx780mmx780mm) vertical mill build

    Thanks for the interest. I moved and am setting up the new shop. I will start work on casting the X axis and Z column after I finish upgrading electrical service in the new shop; Going with...
  20. Re: PM45m(rf45 clone) cnc build log with factory 3hp variable speed

    I used enough washers so the they were half way compressed under load and just adjusted it till it released.
  21. Re: PM45m(rf45 clone) cnc build log with factory 3hp variable speed

    I forget the exact number but theres pics on this thread somewhere you should be able to count. Here is the one I ordered:

    McMaster-Carr

    Hope this helps.
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    Re: 6x12 weld steel hobbies build.

    Nicely done!
  23. Re: Mark's EPOXY Granite 18"x20"x20" (700mmx780mmx780mm) vertical mill build

    I am really not sure where you are coming from on some of your points. The base is stable massive and extremely strong. I reinforced the structure with rebar, 6" 3/8" bolts + the a2 tool steel is...
  24. Re: Mark's EPOXY Granite 18"x20"x20" (700mmx780mmx780mm) vertical mill build

    Sorry for the lack of posts. We had a change and I am moving up to Seattle area and am getting a larger shop to boot. All busy though getting the house ready for sale so it will be a few months. ...
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    Re: 13x40 Jet Lathe CNC conversion with vfd

    Thanks for the info- I will have to try this...
  26. Re: Mark's EPOXY Granite 18"x20"x20" (700mmx780mmx780mm) vertical mill build

    I have been busy and not able to work on things - hope to do more by the weekend.
  27. Re: Mark's EPOXY Granite 18"x20"x20" (700mmx780mmx780mm) vertical mill build

    Update:

    I got everything de-molded and was able to test fit the linear rails. I was able to indicate them parallel to 5 decimal places and about 7 thousands variance on height so the ground steel...
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    Re: 6x12 weld steel hobbies build.

    Great job- cuts nice
  29. Re: Mark's EPOXY Granite 18"x20"x20" (700mmx780mmx780mm) vertical mill build

    The bars are precision ground to .001" on all sides and are 1/2"x3"x36" O-1 from Starrett.
  30. Re: Mark's EPOXY Granite 18"x20"x20" (700mmx780mmx780mm) vertical mill build

    I forgot to mention do the alignment with the melamine on a flat surface before you tighten the steel plates down
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