3d Printing

Discussion in 'DIY' started by Dustin B, Apr 19, 2015.

  1. Dustin B

    Dustin B Well-Known Member

    Joined:
    May 10, 2007
    Messages:
    1,287
    Likes Received:
    59
    I should also say that although there have been a number of successful decent quality sub $500 printers it's still the 1-3k consumer stuff that is really working well. It always comes down to quality parts with these machines and good rails or extrusions, bearings, stepper motors, control boards, power supplies, precision machined extruder and hotend parts and frame parts all add up. That won't change. For the same reasons cheap speakers can't match ones with more expensive parts when both have the same level of design we aren't ever going to see really capabile 3d printers in the few $100 range anytime soon if ever.
     
  2. Dustin B

    Dustin B Well-Known Member

    Joined:
    May 10, 2007
    Messages:
    1,287
    Likes Received:
    59
    Buddy just ordered an Original Prusa I3 MK2 (won't have it for 6-7 weeks though). It's getting really good reviews and can be ordered kit for for about $700 and assembled for $900. Also will soon offer the ability to print up to 4 materials from a single nozzle. Here's a recent review of it.

     
    CJ likes this.
  3. Brian Bunge

    Brian Bunge Active Member

    Joined:
    May 12, 2007
    Messages:
    2,551
    Likes Received:
    1
    I had forgotten about this thread. This is a timely post though, as I just ordered a Prusa knockoff (aNet A8) from ebay. My cousin has the same printer and has gotten some amazing prints from it. Once I get the hang of it with some small projects I hope to try to print some small computer speaker enclosures. I just cannot decide if I want to make small spheres or something more angular. The printer has a build volume of 220mm x 220mm x 240mm so I should be able to build something interesting once I figure out the software.
     
  4. Dustin B

    Dustin B Well-Known Member

    Joined:
    May 10, 2007
    Messages:
    1,287
    Likes Received:
    59
    I'm starting to make the transition from Sketchup to Fusion 360 for creating the models to 3d print. I'll still use Sketchup for planning reno's and most wood working projects, but anything I'll be 3d printing will be done in Fusion 360 now. Since the only 3d modelling software I ever learned was Sketchup it hasn't been an easy transition, but I'm making progress in figuring it out.

    Fusion 360 is free for enthusiasts and startups. You can go to the enter a license section of the program and they list an option for free as long as you aren't using it for a business bringing in 100K or more a year.
     
  5. Dustin B

    Dustin B Well-Known Member

    Joined:
    May 10, 2007
    Messages:
    1,287
    Likes Received:
    59
    Got my first Fusion 360 model almost completed. Just have to tweak a few hole sizes and then split the shroud into a few different parts I'll have to glue back together to make it easier to print.

    A360

    Hopefully I'll get the part printed this weekend.
     
  6. John F

    John F Active Member

    Joined:
    May 8, 2007
    Messages:
    2,195
    Likes Received:
    14
    Why the switch from Sketchup to Fusion 360?
     
  7. Dustin B

    Dustin B Well-Known Member

    Joined:
    May 10, 2007
    Messages:
    1,287
    Likes Received:
    59
    My brother pointed me to it. He's a professional animator and uses Maya at work. He had some home building projects and so decided to look into Fusion 360 since both programs are made by Autodesk. He asked me about it and sent me this video link.



    I hadn't really looked into any other modelling software and just completely bought into Sketchup being significantly easier to use. I now know that in some ways it is and in some ways it isn't. Like I said above for basic stuff like room layouts and making room design decisions and most wood working projects I'll keep using Sketchup. But for 3d printing Fusion 360 is far superior. It treats things as solids by default. Loads of the tools are specifically designed for the tasks you'll most want to do when designing parts (fillets, chamfers, join/subtract/intersect, shell, joints are crazy cool). The parametric modelling aspect slows you down a bit, but with some forethought it allows you to make models that you can have a handful of variables be editable and have designs that scale to different specs trivially. And has some different modes that will make doing more free form things like hand grips way easier. If you really get into it you also get access to FEA analysis tools that could help you figure out if your part design will be strong enough. The list could go on.

    The interface between the mounting plate and the donut at the bottom would have been impossible in Sketchup without a bunch of addins (and I hacked an addin to get some basic Solid Tools in the free version). All that stuff is just there in Fusion 360 and designed into the program, not a plugin, so they work way better too. If you're doing any part design for 3d printing give it a try.
     
  8. Dustin B

    Dustin B Well-Known Member

    Joined:
    May 10, 2007
    Messages:
    1,287
    Likes Received:
    59
    Print has started. A little over 2 hours to complete. 3a618981d2431e8a0c98eb4edc70b7ed.jpg
     
  9. Dustin B

    Dustin B Well-Known Member

    Joined:
    May 10, 2007
    Messages:
    1,287
    Likes Received:
    59
    Well printed not too bad but I got the support material settings in Slic3r all wrong. I'd spend hours trying to separate the supports and likely wreck the one part doing it. Trying again now with different orientation of the parts and support material settings.
    3818cc45e5e7eb04e2a2e012b5de6c12.jpg 33116b568d2638c9aaf5a5219f975cea.jpg

    Sent from my XT1563 using Tapatalk
     
  10. Dustin B

    Dustin B Well-Known Member

    Joined:
    May 10, 2007
    Messages:
    1,287
    Likes Received:
    59
    Printer jambed during second attempt. Fixed that and on the third the middle section of one piece was curling up and catching the nozzle. Tweaked the model a bit and tried again. Still happened but not as bad. Print finished and should work but some parts of it curled pretty bad. I've come to the conclusion I'll have to add some of my own supports in the model for parts like this. The generated ones just don't cut it.
     
  11. John F

    John F Active Member

    Joined:
    May 8, 2007
    Messages:
    2,195
    Likes Received:
    14
    When I started printing I had zero problems with curling, and I printed some fairly wide pieces. Lately, I've been having problems with curling. I thought it was heat related: I don't have a heated bed and I moved the printer into a cooler room.

    I've only printed with PLA. I've been thinking about upgrading to another printer with a heated bed and that can handle more materials.
     
  12. Dustin B

    Dustin B Well-Known Member

    Joined:
    May 10, 2007
    Messages:
    1,287
    Likes Received:
    59
    I've got a heated bed. I've printed PLA and PETG so far. I've had no issues with curling until this print. There was none on the first attempt. All the curly is occurring where the printer is bridging across support material. When the support was extensive but impossible to remove no curling. When I changed the support generation to something removable I got this curling. I think if I modeled the part to have a single solid wall at the corners and curves doing this that extends down to the print bed the problem would go away.
     
  13. Dustin B

    Dustin B Well-Known Member

    Joined:
    May 10, 2007
    Messages:
    1,287
    Likes Received:
    59
    Well it's definitely a v1. Some significant issues that need to be solved. Mostly how difficult it makes doing anything to the extruder. That it doesn't sit level without the help of the thread on the right side. A bunch of dimensions on it are slightly off and I misalligned it a bit gluing it together with fastcap 2p10 (you really do only get a few seconds to get it aligned).

    However it is functional and it moves way more air on to the part and does it much more evenly. ad4d99e9511f3a314dd0dccee1475fb6.jpg

    Sent from my XT1563 using Tapatalk
     
  14. Dustin B

    Dustin B Well-Known Member

    Joined:
    May 10, 2007
    Messages:
    1,287
    Likes Received:
    59
    Finally starting to play with my 3d printer some more and making some progress into getting it to a point where I'd be confident to just start any print and let it go. Next steps have been designing and printing a new blower shroud and a bracket for adding a BL Touch bed leveling sensor. Getting a lot better at using Fusion 360. Here's a link (A360) to the model of my x carriage with the new shroud design and the BL Touch bracket. I modeled the carriage, the bracket, the shroud and the blower. Capable of doing the other two items now but used models someone else had done for the hotend and the BL Touch to save some time.

    And here is a video of the BL Touch doing it's thing with a bed leveling run:

    https://photos.app.goo.gl/eScPedXkg9hVuKh68
     
    Last edited: Oct 5, 2018
  15. Dustin B

    Dustin B Well-Known Member

    Joined:
    May 10, 2007
    Messages:
    1,287
    Likes Received:
    59
    Ended up deciding to take the upgrades to my printer a little farther. Here's a Fusion 360 model mostly complete of my printer with all the new parts.
    A360

    I modeled a new Wade's extruder that adds a french cleated bracket that allows me to move the springs off the guidler (the door on the extruder that has a bearing that pushes the filament against the hobbed bolt the big gear turns that feeds the filament). It also has a bracket that sticks out the front with a zip tie hole behind it that all the wires leaving the x-carriage can be tied too. Here's a picture with the new extruder and the final blower shroud and bl-touch mount attached.

    1mFKmcjMJw41sXUWPhr16Jn5IyGWclYEyeBGX1uf61QmRGSSFFekMO3JU55ZcIzpWEv64iq6OUpM9ujOcLI=w720-h960-no.jpg

    Printing the new x motor mount now. 7 hour print. Many more like it to go before I've got all the parts for the upgrades. Big ones are moving to T8 lead screws with a 2mm lead so that each step of my motor is a 0.01 height change (should also up my z axis speed by 2.5x). Changing to 16 tooth gt2 pulles on the x and y motors to change there resolution to 10 microns from 12.5 at the cost of max printing speed that I'll never set my printer to go to. Everything is beefed up significantly and designed to start hiding the wiring (got some 20x20 extrusion groove covers and some cable rap). Both the x and y axis belts get new connectors to the x carriage and y bed that are more solid and won't allow any backlash. They also both get screw adjustable belt tensioning. Z mounts are beefed up and will have dust covers for the motors and integrated pocket holes for attaching the printer to the mdf base.

    After these plan to do a new power supply mount with a nicer switch and detachable power cable as well as an enclosure for the control board. Control board might get some TMC2130 stepper motor drivers and a cooling fan. Then further down the road might replace the x carriage with a new one using a Bondtech BMG extruder. After that would be a new y bed using 120v heater and a BuildTak build plate system.

    Also might get a Raspberry Pi to run octoprint for controlling it so it doesn't need to be hooked up to my computer.
     
  16. Carl V

    Carl V Well-Known Member Donor Top Poster

    Joined:
    May 8, 2007
    Messages:
    9,965
    Likes Received:
    428
    Wow! What is on your immediate printing horizon? This can’t be just idle curiousity?

    Oh and how are those SEOS speakers coming along? I mentioned your speakers in cj’s HT speaker thread.
     
  17. Dustin B

    Dustin B Well-Known Member

    Joined:
    May 10, 2007
    Messages:
    1,287
    Likes Received:
    59
    What spurred getting back into this was actually the new project I'm on at work. We ended up deciding to use a Raspberry Pi for it and needed a custom enclosure for it. Getting paid to use work time to learn Fusion 360 got me over the hump I was having in understanding how to use it. Work has bought a couple printers and we are going to 3d print the cases for the pilot. Now that I'm confident in my ability to use Fusion 360 what I wanted to do to my printer wasn't so daunting anymore (plus making that model of my printer helped me get even better at Fusion which helps for the work case design too).

    After the printer is upgraded and working great there are a number of things I want to make. Some custom cell phone mounts for our cars. New brackets to hold the bottom of a blind in place on a door. My dad could use some custom mounts for all his trailer monitoring stuff in his truck. He wants something for his portable standing desk. I have a number of things in mind for my garage related to wood working. There are RC car things I'll make.

    A big one will be parts for a 4 way adjustable masking system for the new theater room. The speakers are still in their packaging. Talking with drafters now. The major structural change will happen spring summer 2019. Then after the bedroom portion is completed I'll get started on the theater. Once that room is mostly complete then I'll get around to finally building the speakers
     
  18. Carl V

    Carl V Well-Known Member Donor Top Poster

    Joined:
    May 8, 2007
    Messages:
    9,965
    Likes Received:
    428
    You have a lot on your plate.
     
  19. Dustin B

    Dustin B Well-Known Member

    Joined:
    May 10, 2007
    Messages:
    1,287
    Likes Received:
    59
    Ya. The list is long. But I fully expect it to take many years to get through it.
     

Share This Page