3D Printers. Who's got one?

Discussion in 'Shiny Things' started by dorkpunch, Jan 8, 2013.

  1. dorkpunch

    dorkpunch Oops...

    Joined:
    Aug 2, 2006
    Oddometer:
    5,532
    Location:
    Blackfoot, ID
    Playing around with some settings...

    <iframe width="560" height="315" src="http://www.youtube.com/embed/tbwkxFs1rzw" frameborder="0" allowfullscreen></iframe>


    Getting better.

    [​IMG]
    #81
  2. KiloBravo

    KiloBravo Armchair Adventurer

    Joined:
    Feb 7, 2011
    Oddometer:
    1,245
    Location:
    Alabamistan
    Nice - Inconel 718 is a gummy bitch to work with, that is one material it's better suited for 3D printing / sintering. I send CAD for prototypes to a 3D service that prints and returns them in like 3-4 days, then send the approved part and CAD file to have the titanium casting made, beats the heck out of machining.
    #82
  3. nulluser

    nulluser Been here awhile

    Joined:
    Nov 5, 2008
    Oddometer:
    145
    Here is one from today with a 0.5 mm layer height. I'm trying one that is 1.5 times bigger with a 0.25 layer height.

    I used goof-off to craze the plastic. The material is black PLA. Model is around 2.5" tall.

    [​IMG]
    #83
  4. dorkpunch

    dorkpunch Oops...

    Joined:
    Aug 2, 2006
    Oddometer:
    5,532
    Location:
    Blackfoot, ID
    What size nozzle are you using?

    Still playing around with settings. Here's another nose cone- this one from ABS. My nozzle is .35mm, layer height .25mm.

    [​IMG]

    The bottom was poor, but it was still spitting out some of the PLA that was stuck in the nozzle. Once it was all run out it cleaned up nicely. Really need to figure out a fan to cool the extrusion so I can get a clean point on the top.
    #84
  5. nulluser

    nulluser Been here awhile

    Joined:
    Nov 5, 2008
    Oddometer:
    145
    I'm using a 0.5mm nozzle. Waiting for the heated bed to try ABS, but I have heard of a lot of problems with it. Edges peeling up, and the part cracking. PLA is pretty forgiving.
    #85
  6. dorkpunch

    dorkpunch Oops...

    Joined:
    Aug 2, 2006
    Oddometer:
    5,532
    Location:
    Blackfoot, ID
    Playing around some more... trying some more detailed do-maboppies. Now I'm having some random step missing- carriage doesn't actually move but it thinks it did so it continues printing, in the wrong place.

    [​IMG]

    [​IMG]

    Very impressed with the quality so far- just keeps getting better. These two were printed with ABS- heated bed set at 75 deg and an acetone/abs slurry painted on. No visible warpage, looks great! If only I could get a print to finish...
    #86
  7. 42

    42 Bokononist

    Joined:
    Mar 20, 2009
    Oddometer:
    20,163
    Location:
    New York
  8. Bubwheat

    Bubwheat Long timer

    Joined:
    Feb 8, 2006
    Oddometer:
    1,747
    The best pic of the thread! Boy does good work!
    #88
  9. troidus

    troidus Long timer

    Joined:
    Sep 1, 2010
    Oddometer:
    23,140
    Try disabling nonessential services and startup apps.

    http://technet.microsoft.com/en-us/sysinternals/bb963902

    You could have trouble with antivirus, defrag, windows, java, adobe, or google updates, or other things that are interruping your print routines. In a pinch, try booting in Safe Mode and then see if it'll print without barfing on you.

    If it isn't a software problem, it could be interference with the motor drives. You may need to shield your cables, motors, or driver board.
    #89
  10. dorkpunch

    dorkpunch Oops...

    Joined:
    Aug 2, 2006
    Oddometer:
    5,532
    Location:
    Blackfoot, ID
    Thanks for the suggestions. Will look into it. Here's a sort-of review I posted on my blog if'n anyones interested.

    Well, with a few successful prints under my belt, I think its time to write a few of my thoughts down. These printers are incredible machines. It is something else to draw something up in Sketchup, click a few buttons, jiggle a few switches, and then sit back and wait for an actual thingamajig to come off the printer. My wife thinks its pretty funny, but me and the boys will sit and watch it print- back and forth, back and forth, for hours on end. My students have been totally enthralled with it- anytime it's running they want to stand around and gawk at it. Maybe they just want to avoid working on their assignments? Nah...

    Previous to this expereince, I had ZERO time playing with 3D printers. I did get an Associates degree in Manufacturing Engineering like 10 years ago, which had a fair bit of CNC experience, and that helped a bit. There is litterally thousands upon thousands of pages of information out there on the internet, and many different resources for setting up your own printer.

    What does all this mean? Well, I don't know how qualified I am to review the Mendelmax 2.0, but here's my take on it. Given my background I would consider myself as one with great skills when it comes to the mechanical end of things, but only mediocre when it comes to the electronics / software end of things. I will admit- this was a HARD project for me. It took a lot of time and I had to do a lot of research and trial and error to get prints. I do feel though that as this specific printer moves from the beta testing process into a more refined package for resale, many of my headaches will have been eliminated. Many of the issues I have had have already been adressed, and as more people build and use this printer the support group and information will expand exponentialy.

    As for print quality. Again, I don't have much to compare it to, so here's my take. From what I have seen, the quality coming off of my printer is excellent. There are hundreds of varialbes that affect the quality- type of plastic, size of nozzle, extruder, heated bed, design of parts, and on and on. In addition to the physical factors, it does take some practice and some skill to get the printer aligned and calibrated each time, and to know how to design prints to be successfull. It's all part of the huge learning curve. Again, thankfully, there is a lot of info and a lot of people out there willing to help you become successfull.

    I full intend to use the heck out of this machine in the classes I teach. I don't see any reason why it isn't up to the task of running just about continuosly day in and day out in a middle school setting. Sure, things will probably wear out or need adjusting, but it's a well built, well thought out design that can only get better- that's the beauty of REPRAP's or REPSTRAP's- everyone can littlerally print their own improvements. Heck, I've already got an idea to adapt some ideas from a MIG welder to my extruder to make it much quicker and easier (without tools) to change plastics.

    Can't wait to see where this thing takes me. For now, we'll call the assembly and testing done. Keep in mind I will still have to do the z-axis update when it shows up, and I still plan on doing a lot of posts here about how to set up prints, slic3r settings, different plastics, and other little tips and tricks I've picked up doing this.

    SO. Lets call it an even 18 hrs. to build, test, and get some decent prints off of this printer.

    I feel now that I've done it, this could be DRASTICALLY reduced- I think much more reasonable estimate should be 5-10 hours for the total newby, and possibly quite a bit less for the experienced builder with all the tools and know-how from previous builds.


    And a few parting shots of the printer:

    Some bling, both from Makers Tool Works and the school district...

    [​IMG]

    The "finished" printer. Still need to make a spool holder for the plastic among many other things...

    [​IMG]
    #90
  11. garandman

    garandman Wandering Minstrel

    Joined:
    Feb 5, 2007
    Oddometer:
    6,802
    Location:
    Dorchester, MA / Goshen, NH
    I'll send you this if you PM me your contact info.

    [​IMG]


    This "3D Printers in Education" Infographic may interest you as well.
    #91
  12. c.vestal

    c.vestal Rally On

    Joined:
    Feb 19, 2006
    Oddometer:
    4,991
    Location:
    COS
    I picked up a Lulzbot AO-100 a couple months ago.
    Love it. Making some obscure parts for my Rally Moto Kit.
    Already starting on printing brackets for my next printer.

    Lulzbot has a unique spool holder for the loose filament. I picked up some PLA from another vendor and it was in a plastic spool. I whipped up a holder for that.
    EDIT: photo added
    [​IMG]
    #92
  13. garandman

    garandman Wandering Minstrel

    Joined:
    Feb 5, 2007
    Oddometer:
    6,802
    Location:
    Dorchester, MA / Goshen, NH
    <iframe width="560" height="315" src="http://www.youtube.com/embed/X5AZzOw7FwA" frameborder="0" allowfullscreen></iframe>
    #93
  14. c.vestal

    c.vestal Rally On

    Joined:
    Feb 19, 2006
    Oddometer:
    4,991
    Location:
    COS
    do no know about "the world"... sure is changing "my world".

    It takes me about 40 min to make a switch holder for our Roadbook/Rally setups.
    [​IMG]

    It took me 30 min. to draw one up and get it printing... with improvements to the design.
    [​IMG]

    small imperfections will be gone with a thinner layer height.
    [​IMG]

    <iframe src="http://api.smugmug.com/services/embed/2393087084_rM9rtCN?width=640&height=360&albumId=27874258&albumKey=nLRR9X" frameborder="0" height="360" scrolling="no" width="640"></iframe>
    #94
  15. garandman

    garandman Wandering Minstrel

    Joined:
    Feb 5, 2007
    Oddometer:
    6,802
    Location:
    Dorchester, MA / Goshen, NH
    They're awesome for all sorts of motorcycle widgets. I ride with the Patriot Guard Riders and needed a flag holder, so I designed one up in SolidWorks and printed them out:
    [​IMG]

    And last year I kluged the housing for a gyro-stabilized camera mount for my SV650.
    [​IMG]

    We even ran FEA on the bracket to make it stiffer - and use less material.
    [​IMG]
    #95
  16. beechum1

    beechum1 Dandole Gas al Burro

    Joined:
    Oct 14, 2007
    Oddometer:
    9,602
    Location:
    Not home in Tijuana
    wow, that's a pretty fast feed rate compared to what I was expecting.
    #96
  17. dorkpunch

    dorkpunch Oops...

    Joined:
    Aug 2, 2006
    Oddometer:
    5,532
    Location:
    Blackfoot, ID
    Figured out my missed steps issues... Turns out you have to set each motor driver to the correct voltage (.47v). My X was cranked all the way up to .54. Got my first successful longish print! :clap

    [​IMG]

    [​IMG]

    Took about 2 minutes to build in Sketchup, and about 50 minutes to print. :lol3
    #97
  18. c.vestal

    c.vestal Rally On

    Joined:
    Feb 19, 2006
    Oddometer:
    4,991
    Location:
    COS
    Nice!

    Have you seen this website?
    http://www.thingiverse.com

    #98
  19. OaklandStrom

    OaklandStrom Long timer

    Joined:
    Sep 17, 2005
    Oddometer:
    1,623
    Location:
    East Bay
    I have experience with many of the Maker Grade 3d printers, and have seen them used in a public access shop. All of them are pretty fragile, and don't hold up well to semi-trained people. At this point, I'm hoping that the Replicator 2 and Replicator 2X are solid machines. The print quality on the 2 is better than all other units I've used (in that price range), and it seems faster. And it's made from metal, rather than laser cut plywood. It has built in shields, to block air movement.

    DPunch - make sure to cover the machine, or put it in a room with *no* air movement. It will mess up your prints if you don't.
    #99
  20. garandman

    garandman Wandering Minstrel

    Joined:
    Feb 5, 2007
    Oddometer:
    6,802
    Location:
    Dorchester, MA / Goshen, NH
    DorkPunch, what was the layer thickness and bead width on the little truck you printed?