MK3's conservative acceleration/jerk settings
I think the MK3's acceleration/jerk settings are too conservative, whats the solution?
Re: MK3's conservative acceleration/jerk settings
You have to clarify what do you mean? Meanwhile, here are a couple of options of varying usefulness:
A) You think the acceleration settings are too conservative. One solution is that you stop thinking that.
B) You can add M204 and M205 commands to you gcode before printing starts to change the relevant settings. You could also do M500 to save the new values permanently. This may lead to increased ringing or uglier prints, obviously.
C) You can figure out better arguments than "I think" and present them to Jo or someone else at PR, and see if that convinces them to change things.
D) You can compile your own firmware, unclear how this would help.
E) You can buy another printer, possibly a MK2S if that is what you're comparing the acceleration settings to?
F) If you try the higher acceleration and find print quality suffers, you can print/add modifications to your printer to make it more stable, which would make it be able to handle higher acceleration.
😀
Re: MK3's conservative acceleration/jerk settings
Hey, let's keep politics out of the forum. No talking about conservative jerks!
😆
Re: MK3's conservative acceleration/jerk settings
You have to clarify what do you mean? Meanwhile, here are a couple of options of varying usefulness:
A) You think the acceleration settings are too conservative. One solution is that you stop thinking that.
B) You can add M204 and M205 commands to you gcode before printing starts to change the relevant settings. You could also do M500 to save the new values permanently. This may lead to increased ringing or uglier prints, obviously.
C) You can figure out better arguments than "I think" and present them to Jo or someone else at PR, and see if that convinces them to change things.
D) You can compile your own firmware, unclear how this would help.
E) You can buy another printer, possibly a MK2S if that is what you're comparing the acceleration settings to?
F) If you try the higher acceleration and find print quality suffers, you can print/add modifications to your printer to make it more stable, which would make it be able to handle higher acceleration.
😀
How you think in a nutshell:
A) Actually be helpful
B) Be a smartass
Re: MK3's conservative acceleration/jerk settings
You have to clarify what do you mean? Meanwhile, here are a couple of options of varying usefulness:
A) You think the acceleration settings are too conservative. One solution is that you stop thinking that.
B) You can add M204 and M205 commands to you gcode before printing starts to change the relevant settings. You could also do M500 to save the new values permanently. This may lead to increased ringing or uglier prints, obviously.
C) You can figure out better arguments than "I think" and present them to Jo or someone else at PR, and see if that convinces them to change things.
D) You can compile your own firmware, unclear how this would help.
E) You can buy another printer, possibly a MK2S if that is what you're comparing the acceleration settings to?
F) If you try the higher acceleration and find print quality suffers, you can print/add modifications to your printer to make it more stable, which would make it be able to handle higher acceleration.
😀
How you think in a nutshell:
A) Actually be helpful
B) Be a smartass
1. Clarify your question with more than one line of text, so that others might understand your line of thought better.
2. Conservative can mean many things especially in this context. So what is it that you mean?
All jokes aside. Acceleration and jerk settings are dictated by hardware. If setup cant live up to the standards that the manufacturer set, which most often is set way too high, then print quality will only suffer. The majority of printers I've seen and dealt with in this price bracket needed heavy tweaking to deliver reasonable results. The Mk3 delivers great results as it is and only needs minor tweaking to deliver exceptional ones.
Unless you, come hell or high water, want speed then I'd suggest sticking to the 'conservative' settings that PR has delivered. As imho they are quite realistic.
Re: MK3's conservative acceleration/jerk settings
I think the MK3's acceleration/jerk settings are too conservative, whats the solution?
Get a core XY instead and increase it? they're realistic for a Cartesian with a direct drive extruder and moving bed....
Re: MK3's conservative acceleration/jerk settings
How you think in a nutshell:
A) Actually be helpful
B) Be a smartass
I was actually quite serious in all my points except the first one. I suppose it can be hard to understand when I only write a single line of text in each of them.
Let's look at them one by one, and yes, I'm trying to be helpful here, but since I don't know exactly what you are talking about, I have to make guesswork until you clarify. Which you haven't.
A) Is trolling. Yes. It could have been a reflection about how you phrased your comment and maybe you were just worried about what PR was doing, and if someone reassured you, then you would stop worrying. It could have been, but I admit it wasn't.
B) If you have an MK3, and you think the acceleration and jerk values are too low and that your MK3 could handle higher values, this is how you would increase it. Temporarily or permanently.
C) If on the other hand you don't have an MK3, but you maybe are looking into buying one, you may be wondering if the lower acceleration settings could lead to for you unacceptable print times. In this case you should contact support, the live chat on shop.prusa.com has worked well every time I've tried it. Tell them your question about the acceleration, and see what they respond. Maybe they comment, like other people have in this thread, that these values for acceleration is nominal for this type of printer. Maybe they will say that they are aware of the problem and that PR is working on a fix? Maybe you've already contacted them. I don't know, because you haven't told us.
D) Maybe you actually know about current issues PR are having with the firmware and the stepper drivers. Maybe you already know how they had higher acceleration values in earlier versions, but lowered them because of ... either ringing or layer shifts, I don't remember. Maybe you have found a solution to their problems and want to implement it in the firmware. If this is the case, the prusa section on github should be your target. I don't know if this is the case, however, because all you've said is that the firmware settings are "too conservative".
E) As others in this thread have said, maybe this type of printer isn't for you. Maybe you actually want a CoreXY or some other type of printer. This obviously depends on whether cost is an issue for you, and if you have bought an MK3 already or are just doing research before your purchase. If you tell us which it is we can help.
F) Maybe you have an MK3 and want to see if you can increase the print speed. Preferably without sacrificing too much print quality, which maybe you found suffering when you did point B above. You could try swapping out the bearings. You could try adding extra bracing to reduce vibrations. You could try to decrease gantry weight. All these and more are possible.
All these are "solutions". They are quite different from one another because you were very vague in your initial post. Had you been more clear from the start, I would only have had to write one of these points. The payment for me writing five solutions instead of just one is me having fun while writing. At your expense. If you don't like that, do better next time!