English
Forums
English forum
Original Prusa i3 MK3 & MK3S & MK3S+
How do I print this? (Printing help)
Support Improvement
 
Notifications
Clear all

Support Improvement  

    Last Post
  RSS
arjan.s2
 arjan.s2
(@arjan-s2)
New Member
Support Improvement

New mk3 user here!

Recently I printed out the hammer head of Thor's Hammer. It used supports around the base and for the sides.

When it finished, it actually came out a better than I was expecting. The top 3/4ths of the model were near perfect. However the bottom part had a bunch of deformities, many around where the supports are, as shown in the picture be

https://imgur.com/wC915Kc

I was thinking to simply increase the density of the supports or something, and possibly flipping the model over (Which I should have done in the first place), but if anyone has had this issue before and have successfully fixed it, do you mind pointing me in the right direction?

My temperature settings are 215, 70 for first layer; 200, 60 for the rest.

Thanks!

Posted : 05/07/2018 3:53 am
bobstro
 bobstro
(@bobstro)
Illustrious Member
Re: Support Improvement

If that's your bottom layer, you may have a few things going on:

  • Ideally, you want your bottom layer to be as flat as possible. Anything not flat is printed on air, so that's where support comes in. If that is the detailed surface of your model, definitely rotate it so the detail is up.

  • If the round part was the only part actually in contact with the bed, you should tweak your Live-Z. The "Life adjust" method works very well and is easy to understand. Download the gcode printable files from that thread.

  • The flat part of the underside may have printed as bridged, which is, by nature, rough. Again, try to avoid bridging on detail surfaces by having them oriented up, or to the sides.

  • The angled parts are a bit droopy, again due to lack support. Angles greater than 45-60 degrees are tough for a 3D printer to handle. Again, rotation will help. If you have similar angles at the bottom, make sure they have support.

  • Printing too hot for the filament can cause drooping.

  • Cooling can also help with overhangs and bridging.

    • My notes and disclaimers on 3D printing

    and miscellaneous other tech projects
    He is intelligent, but not experienced. His pattern indicates two dimensional thinking. -- Spock in Star Trek: The Wrath of Khan

    Posted : 05/07/2018 4:44 am
    arjan.s2
     arjan.s2
    (@arjan-s2)
    New Member
    Topic starter answered:
    Re: Support Improvement

    Alright, I'll try to reprint it later with a different orientation. Thanks for the advice!

    Posted : 05/07/2018 6:27 am
      All forum topics
      Previous Topic
    Next Topic  
    Share: