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RRF 2.03 pressure advance causes 20% overextrusion

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  • undefined
    bot @jschall
    last edited by 4 Sept 2020, 22:11

    @jschall here's the windows build I run day-to-day:

    https://github.com/n8bot/PrusaSlicer/releases/tag/v2.3.0-alpha0-n8pmis

    It's almost the latest PS master branch, but the latest changes they made to the master branch aren't useful so those aren't included yet. (waiting for the seam painter to actually work, not just paint meaninglessly)

    *not actually a robot

    undefined 1 Reply Last reply 4 Sept 2020, 22:14 Reply Quote 0
    • undefined
      jschall @bot
      last edited by 4 Sept 2020, 22:14

      @bot What's the difference between that and the n8_precision_minus_infill_support branch?

      undefined 1 Reply Last reply 4 Sept 2020, 22:20 Reply Quote 0
      • undefined
        bot @jschall
        last edited by bot 9 Apr 2020, 22:23 4 Sept 2020, 22:20

        That release is the n8_precision_minus_infill_support branch.

        I copied and pasted the description from a previous release hastily, so it might have said the wrong thing.

        The previous releases work fine, too, but this one enables better support placement (PS ignores some "thin" support regions which prevents some support from appearing) and also prevents the solid infill from "auto-adjusting" the width by ~1 micron, which was annoying in some cases but not important to "fix."

        There are other releases there, too.

        The two main things I think you'll like are the resolution change, and the decimal precision changes. Fixes extrusion rate problems.

        Edit: Also, you might need some .DLLs from MS Visual Studio redistributable. Let me know if/which ones you need I can send them too.

        *not actually a robot

        undefined 1 Reply Last reply 4 Sept 2020, 22:29 Reply Quote 0
        • undefined
          jschall @bot
          last edited by 4 Sept 2020, 22:29

          @bot ah ok.
          It is complaining about vcruntime140_1.dll, but I've already installed the visual c++ 2015 redistributable...

          undefined 1 Reply Last reply 4 Sept 2020, 22:35 Reply Quote 0
          • undefined
            bot @jschall
            last edited by bot 9 Apr 2020, 22:38 4 Sept 2020, 22:35

            @jschall Yup, that's the one. See this post: https://forum.duet3d.com/post/170901

            I uploaded the .dll for someone previously, but it's named as .stl. just rename it .dll and put it in the prusaslicer folder or wherever.

            I also just updated the release to include that .dll. I hope that doesn't break a EULA. oh well.

            *not actually a robot

            undefined 1 Reply Last reply 4 Sept 2020, 23:54 Reply Quote 0
            • undefined
              jschall @bot
              last edited by 4 Sept 2020, 23:54

              @bot
              Got it running. Doesn't work in VirtualBox anyway because no opengl 2.0+ support. So, I ran it in WINE and it works fine. Extrusion amount looks about right.

              1 Reply Last reply Reply Quote 0
              • undefined
                Edgars Batna @jschall
                last edited by Edgars Batna 9 May 2020, 11:13 5 Sept 2020, 10:43

                @jschall said in RRF 2.03 pressure advance causes 20% overextrusion:

                @bot I tried to build PrusaSlicer before and gave up because of ridiculously huge numbers of dependencies on cutting edge versions of everything.

                They have "noob guide" now. It's basically how it should be built, not really for noobs, but for anyone with a little bit of sanity left. I'm wondering why they even bother with having a guide; the steps can be semi-easily compressed into a batch file. Maybe they take pride in memorizing random things...

                1 Reply Last reply Reply Quote 0
                • undefined
                  jschall
                  last edited by 7 Sept 2020, 21:04

                  Good to see "Detect thin walls" still sucks just as much as ever.

                  undefined 1 Reply Last reply 8 Sept 2020, 05:17 Reply Quote 0
                  • undefined
                    bot
                    last edited by 7 Sept 2020, 21:22

                    Haha. Yeah. There's lots of "fun" things going on in PrusaSlicer. There definitely needs to be a huge refactoring, IMO. Many features need to be removed, or re-considered in the context of other newer features.

                    *not actually a robot

                    1 Reply Last reply Reply Quote 0
                    • undefined
                      Phaedrux Moderator @jschall
                      last edited by 8 Sept 2020, 05:17

                      @jschall said in RRF 2.03 pressure advance causes 20% overextrusion:

                      Good to see "Detect thin walls" still sucks just as much as ever.

                      Still better than Cura. 😀

                      Z-Bot CoreXY Build | Thingiverse Profile

                      undefined 1 Reply Last reply 11 Sept 2020, 17:50 Reply Quote 1
                      • undefined
                        jschall @Phaedrux
                        last edited by 11 Sept 2020, 17:50

                        @Phaedrux Really? Cura seems to do way way better than PrusaSlicer when slicing things with thin walls. Also it has support for coasting which is super important on my ender3 v2s that don't frigging work with linear advance...

                        I just hate Cura's interface. Hard to be worse.

                        undefined undefined 2 Replies Last reply 12 Sept 2020, 21:47 Reply Quote 0
                        • undefined
                          oliof
                          last edited by 12 Sept 2020, 09:25

                          Superslicer has something like coasting iirc

                          <>RatRig V-Minion Fly Super5Pro RRF<> V-Core 3.1 IDEX k*****r <> RatRig V-Minion SKR 2 Marlin<>

                          1 Reply Last reply Reply Quote 0
                          • undefined
                            Phaedrux Moderator @jschall
                            last edited by 12 Sept 2020, 21:47

                            @jschall I find Cura falls apart faster than super Slicer on thin walls. In Cura you're forced to use 2 walls. The master build of Cura has the option of trying to replace one of those wall passes with a travel move, but it rarely seems to work well. At least the gap fill in Slic3r has a lot more leeway with regards to wall thickness. It's true that on the really thin side the walls just don't get extruded at all, but it seems to be a lot more forgiving. Cura will print the thin walls but it's usually well over extruded.

                            Z-Bot CoreXY Build | Thingiverse Profile

                            undefined 1 Reply Last reply 13 Sept 2020, 22:19 Reply Quote 0
                            • undefined
                              Veti @jschall
                              last edited by 13 Sept 2020, 13:33

                              @jschall
                              have you watched https://www.youtube.com/watch?v=7W5pPm0lZDE? it mentions the problems with the titans.

                              undefined 1 Reply Last reply 13 Sept 2020, 22:28 Reply Quote 0
                              • undefined
                                jschall @Phaedrux
                                last edited by 13 Sept 2020, 22:19

                                @Phaedrux Cura has something called "compensate flow" and I think it reduces the flow on one of the two walls so that the total extrusion volume is correct for the wall thickness.

                                undefined 1 Reply Last reply 13 Sept 2020, 22:28 Reply Quote 0
                                • undefined
                                  Phaedrux Moderator @jschall
                                  last edited by Phaedrux 13 Sept 2020, 22:28

                                  @jschall Yes that's the setting I'm thinking of. Doesn't it seem silly to replace a one of the walls with a travel move though? It's still taking the time to move around the entire perimeter it's just not extruding anything. Not very elegant.

                                  For best results it also wants you to use outer wall first, which means overhangs suffer in addition to the extra ooze from the empty travel moves.

                                  Z-Bot CoreXY Build | Thingiverse Profile

                                  undefined 1 Reply Last reply 13 Sept 2020, 22:31 Reply Quote 0
                                  • undefined
                                    jschall @Veti
                                    last edited by jschall 13 Sept 2020, 22:28

                                    @Veti

                                    Yeah totally agree.

                                    Bowden is fking stupid. The whole premise of bowden is to REMOVE a motor that needs to output LESS THAN 1W OF MECHANICAL POWER in order to SAVE MASS on something that weighs in at like 500 grams. Hey, here's an idea: how about instead of that, we stop using half-pound 1970s-era stepper motors?

                                    undefined undefined 2 Replies Last reply 13 Sept 2020, 22:54 Reply Quote 1
                                    • undefined
                                      jschall @Phaedrux
                                      last edited by 13 Sept 2020, 22:31

                                      @Phaedrux said in RRF 2.03 pressure advance causes 20% overextrusion:

                                      Doesn't it seem silly to replace a one of the walls with a travel move though? It's still taking the time to move around the entire perimeter it's just not extruding anything.

                                      Not really, because the only case where it isn't extruding anything is the case where the wall thickness is exactly equal to the line thickness. But yeah, could be optimized.

                                      What slicer does the absolute best with thin walls? I bought Simplify3D and was horribly disappointed. Cura so far seems to do the best job overall.

                                      1 Reply Last reply Reply Quote 0
                                      • undefined
                                        Phaedrux Moderator
                                        last edited by 13 Sept 2020, 22:33

                                        I'd say super slicer does a reasonable job. It seems to have the option to connect the thin wall to the other adjacent perimeters whereas prusa slicer treats the thin wall section as a separate extrusion path entirely.

                                        Z-Bot CoreXY Build | Thingiverse Profile

                                        1 Reply Last reply Reply Quote 0
                                        • undefined
                                          jschall @jschall
                                          last edited by jschall 13 Sept 2020, 22:54

                                          @jschall said in RRF 2.03 pressure advance causes 20% overextrusion:

                                          @Veti

                                          Yeah totally agree.

                                          Bowden is fking stupid. The whole premise of bowden is to REMOVE a motor that needs to output LESS THAN 1W OF MECHANICAL POWER in order to SAVE MASS on something that weighs in at like 500 grams. Hey, here's an idea: how about instead of that, we stop using half-pound 1970s-era stepper motors?

                                          Here's a servo that outputs more torque than the geared titan extruder. It costs a whopping $10 - which is cheaper than the stepper. It weighs 58g vs 280g for the stepper. It includes the gears, which add not-insignificant mass as well. I'm not trying to say you can buy that servo and stick it on an extruder and it will work unmodified - it won't. I'm pointing out from a first principles point of view that you can cut out 80% of the mass of the extruder, without bowden, and it doesn't have to be expensive.

                                          https://hobbyking.com/en_us/hobbykingtm-high-torque-servo-mg-bb-w-proof-12-8kg-0-22sec-58g.html?queryID=76697295b4ca978c54e06a560255a667&objectID=47699&indexName=hbk_live_magento_en_us_products_hbk_price_stock_2_group_0_desc

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