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Angle calculator for smooth surfaces in resin printing

Posted on July 4, 2022June 15, 2024

This angle calculator can be useful for printing flat smooth surfaces on resin 3D printers
using the best angle when some planes should be printed best,
but cannot be printed horizontally/flat due to the fact that the model must be somehow angled.

Resolution , screen size mm, print height mm

37 thoughts on “Angle calculator for smooth surfaces in resin printing”

  1. Karl Hu says:
    April 15, 2023 at 4:29 am

    Only works on flat faces.

    Reply
    1. RC87 says:
      April 15, 2023 at 2:30 pm

      Yea. It’s the whole point of this calculator, isn’t it? 😉

      Reply
    2. dviewy says:
      June 13, 2025 at 1:17 pm

      lol

      Reply
  2. eisbock says:
    June 16, 2023 at 7:23 pm

    Why is the optimal angle different for different printers?

    Reply
    1. RC87 says:
      June 16, 2023 at 7:35 pm

      It’s simply due to the different build plate sizes, resolutions, and thus pixel sizes, which are the parameters for calculating this angle.

      Reply
  3. Krogis says:
    July 15, 2023 at 5:55 pm

    This is great! The pulldown menu is so much quicker when calculating between machines. I’m going to share this calculator to more people.

    Reply
  4. Andrew E Waterhouse says:
    September 2, 2023 at 10:30 am

    This is amazing. I was trying to figure out my Saturn 3 Ultras pixel width and was getting confused. This is of great assistance. Thank you!

    Reply
  5. Nasigoring says:
    October 6, 2023 at 1:53 am

    This is great. Thankyou!!

    Reply
  6. SKleen75 says:
    November 20, 2023 at 7:57 pm

    So, since my Saturn 3 Ultra has rectangular pixels 19 to 25 μm, do i use two different angles? One for every direction i align my print to? Or do i use a average like 21?

    Reply
    1. RC87 says:
      November 20, 2023 at 9:39 pm

      probably two different angles would give better results on those two different axes

      Reply
  7. Joe says:
    December 17, 2023 at 6:21 pm

    (Generally speaking) Does thing angle give the best chance at printing without supports? Or is it purely an asthetic thing

    Reply
    1. RC87 says:
      December 17, 2023 at 7:37 pm

      It’s an aesthetic thing

      Reply
  8. Wayne Rogers says:
    May 18, 2024 at 4:25 pm

    No Epax?

    Reply
    1. RC87 says:
      May 18, 2024 at 8:26 pm

      Hmm, I’ll try add soon

      Reply
  9. Jonathan says:
    May 25, 2024 at 6:09 am

    Are you going to add the Phrozen Sonic Mega 8K S?

    Reply
  10. wds says:
    June 15, 2024 at 3:54 am

    能否添加一下土星4U的

    Reply
    1. RC87 says:
      June 15, 2024 at 12:00 pm

      Saturn 4/4U

      Reply
  11. Ryan says:
    June 16, 2024 at 4:53 pm

    Please make one for Nexa XIP and XIP Pro

    Reply
    1. RC87 says:
      June 17, 2024 at 1:25 am

      ok

      Reply
  12. Pingback: Useful References and Links for 3D Printing | A Blog in Miniature
  13. Rick says:
    August 19, 2024 at 4:09 am

    Thank you!

    Reply
  14. Edward says:
    August 19, 2024 at 9:44 pm

    Super dumb question. On the build plate, is X front-to-back and Y side-to-side?

    Reply
    1. RC87 says:
      August 19, 2024 at 11:22 pm

      X is from side to side (let’s say along the longer edge of the build plate) and Y is front to back

      Reply
  15. Tomáš Otáhal says:
    September 4, 2024 at 8:00 pm

    This tool is great, the only thing I miss is the indication of the longer and shorter side of the build plate when the pixel is not square. This is to make it clear which axis of the build plate is suitable for which angle.
    That would be great!

    Reply
    1. RC87 says:
      September 6, 2024 at 7:36 pm

      So far all printers that I analysed have the same coordinate system. And every manufacturer (for printers I’ve adopted in my calculator) is using just X,Y without any clarification where is X,Y on their printers, but like I said, so far it is all the same coordinate system. So, I don’t want to make any custom clarifications on that topic, which might be wrong for some future printer.

      Reply
  16. Raul says:
    September 6, 2024 at 2:23 pm

    Hi ! I don´t saw the Elegoo Mars 3 model. Can I use the same for Mars 3 pro ? Thank´s in advance.

    Reply
    1. RC87 says:
      September 6, 2024 at 7:26 pm

      Probably yes, but I’ll try add that printer later

      Reply
  17. RCA says:
    September 8, 2024 at 9:04 pm

    Great calculator!!
    I would appreciate it if both angles could be copy&pasted
    At the moment only one angle can be copied or am I somehow missing something?

    Reply
  18. Gary says:
    September 19, 2024 at 12:45 pm

    Thanks for making this! This is very helpful.

    Reply
  19. user-914522 says:
    October 14, 2024 at 3:02 pm

    awesome

    Reply
  20. Rich says:
    November 2, 2024 at 12:51 pm

    I have an old Mars (original Mars…Mars1?) that I still use, could you add that in there please?

    Reply
    1. RC87 says:
      November 4, 2024 at 2:54 pm

      Sure, I’ll try to add that model

      Reply
  21. Peter says:
    November 3, 2024 at 8:25 am

    Amazing tool. Very useful, thank you so much for sharing this with the public and for your effort and time put into this.

    It’s so to see how many people today just take things for granted, and complaining about something that they even got for free.

    Reply
  22. Eric says:
    December 17, 2024 at 2:59 am

    Thank you for taking the time to gather the data and present this tool. Looking forward to testing out on a base I need to print.

    Reply
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  24. C.B.S. says:
    March 8, 2025 at 1:08 am

    Could this be used to determine the WORST angle to use?
    Like if I wanted to make a model to test AA on a printer would using the vertical angle # but from the horizontal plane produce the most pronounced layer lines?

    Reply
    1. RC87 says:
      March 10, 2025 at 3:27 pm

      No, it can’t be determined that way. The worst angle is not a discrete value, everyone evaluates it differently.

      Reply

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