Close



Page 10 of 10 FirstFirst ... 8910
Results 91 to 95 of 95
  1. #91
    The Engels also plan to offer an optional CNC router to their Kickstarter backers, which will allow the 3D printer to become a CNC machine. They are also considering making a laser cutter/engraver attachment available as well.

  2. #92
    Technologist
    Join Date
    Oct 2016
    Posts
    101
    Sadly the Kickstarter wasn't successful. But I guess it was inevitable, Dollo isn't the best option commercially... rather a

    So the Dollo rebuild: I took a 360W 12V PSU from my Tronxy X5S (going to convert that to 24V with DuetWifi at later time) and things are moving. I wired most things and running some movement gcode the wear the X and Y parts in a bit: https://www.dropbox.com/s/1r8aazwvh8...54.31.mp4?dl=0. Some 50000 movement lines, seems to work fine, no skipped steps and moving quite smoothly after few hours.
    Wiring is a mess, but I'll clean it up once I figure how...

    Got the hotend wiring PCB printed and mounted. It has connectors for the wiring so swapping hotends is easier, no need to rewire whole thing. I have similar connector on my Tronxy, been working fine for a while:
    2019-03-29 19.54.41.jpg

    Going with the old 21cm bed for now. Printed some adapters for the bed carriage to allow mounting the smaller bed on it. Need longer bolts to get the bed mounted on it:
    2019-03-29 19.55.04-1.jpg

    Tomorrow maybe try some printing...

  3. #93
    Technologist
    Join Date
    Oct 2016
    Posts
    101
    Mounted the bed properly, added part cooling fan and wired them properly. After leveling the bed and a couple of test prints I got this benchy printed:

    2019-03-31 16.58.55.jpg2019-03-31 16.59.00.jpg2019-03-31 16.59.18-1.jpg

    Looking quite good.

    Had some jamming problems on the first try, reduced retraction a bit and added filament oiler, no more jams. Also other Z-motor was binding occasionally due to the coupler being just a bit too tight fit, fixed that by wrinting some g-code to move the bed up and down and using a file to smooth out the coupler while moving.

    Need todo something about the wiring next and also mount the PSU to the frame.

  4. #94
    Technologist
    Join Date
    Oct 2016
    Posts
    101
    MKS Sbase is a nice board and Smoothieware seems to work fine. However, Smoothie lacks one feature that I consider a must with Dollo: mesh bed leveling i.e. the manual leveling. Smoothie only supports leveling with a sensor, but Marlin has that so I compiled Marlin 2 bugfix for MKS Sbase. Everything went better than expected and after leveling the bed, I tried to print some easter eggs. Suprisingly the result was quite bad, seemed like layer shifting.
    2019-04-15 22.12.32.jpg

    After tuning the accelerations, jerk/junction deviation etc. for few nights I started fiddling with the stepper parameters, like minimum pulse width etc. Finally changing minimum pulse width from 2ns to 3ns fixed the problems and the result are as good as they should be.
    2019-04-15 22.13.05.jpg2019-04-15 22.12.38.jpg

    Mesh bed leveling is a nice feature, but it's bit tedious if you need to do it often as you have to manually jog the z-axis. So I started thinking about a removable sensor that's basically a limit switch that you can attach to the X-carriage for the duration of the leveling sequence. Bltouch would be even easier, but it takes some space around the hotend permanently so removable sensor is a good compromise.

  5. #95
    Goood One Thanks

Page 10 of 10 FirstFirst ... 8910

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •