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    RRF 2.03 pressure advance causes 20% overextrusion

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    • botundefined
      bot @jschall
      last edited by

      @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

      jschallundefined 1 Reply Last reply Reply Quote 0
      • jschallundefined
        jschall @bot
        last edited by

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

        botundefined 1 Reply Last reply Reply Quote 0
        • botundefined
          bot @jschall
          last edited by bot

          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

          jschallundefined 1 Reply Last reply Reply Quote 0
          • jschallundefined
            jschall @bot
            last edited by

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

            botundefined 1 Reply Last reply Reply Quote 0
            • botundefined
              bot @jschall
              last edited by bot

              @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

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              • jschallundefined
                jschall @bot
                last edited by

                @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.

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                • Edgars Batnaundefined
                  Edgars Batna @jschall
                  last edited by Edgars Batna

                  @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...

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                  • jschallundefined
                    jschall
                    last edited by

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

                    Phaedruxundefined 1 Reply Last reply Reply Quote 0
                    • botundefined
                      bot
                      last edited by

                      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

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                      • Phaedruxundefined
                        Phaedrux Moderator @jschall
                        last edited by

                        @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

                        jschallundefined 1 Reply Last reply Reply Quote 1
                        • jschallundefined
                          jschall @Phaedrux
                          last edited by

                          @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.

                          Phaedruxundefined Vetiundefined 2 Replies Last reply Reply Quote 0
                          • oliofundefined
                            oliof
                            last edited by

                            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<>

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                            • Phaedruxundefined
                              Phaedrux Moderator @jschall
                              last edited by

                              @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

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                              • Vetiundefined
                                Veti @jschall
                                last edited by

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

                                jschallundefined 1 Reply Last reply Reply Quote 0
                                • jschallundefined
                                  jschall @Phaedrux
                                  last edited by

                                  @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.

                                  Phaedruxundefined 1 Reply Last reply Reply Quote 0
                                  • Phaedruxundefined
                                    Phaedrux Moderator @jschall
                                    last edited by Phaedrux

                                    @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

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                                    • jschallundefined
                                      jschall @Veti
                                      last edited by jschall

                                      @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?

                                      jschallundefined deckingmanundefined 2 Replies Last reply Reply Quote 1
                                      • jschallundefined
                                        jschall @Phaedrux
                                        last edited by

                                        @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.

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                                        • Phaedruxundefined
                                          Phaedrux Moderator
                                          last edited by

                                          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

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                                          • jschallundefined
                                            jschall @jschall
                                            last edited by jschall

                                            @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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