Hypercube Fusion movement help
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I wouldn't worry about the overshoot as long as the temp holds steady.
I wouldn't even worry too much about having specific tuned values for each temp. If you print PLA at 200 and PETG at 240, you could split the difference and tune to 220 and have very good results. As long as the heat up time is quick, the overshoot isn't too bad, and the temps are stable during use I would call it good.
More important would be having accurate thermistor values giving you accurate temp readings to begin with. That's where a good quality thermistor like the Semitec from E3D that gives you actual values to use makes the most difference. The fit and finish of the cartridges also ensure good physical connection to the heater block.
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@Phaedrux changed the tune but also just purchased the E3D gold V6 which I will change out as soon as it arrives.
I think I have everything else setup correctly but there is 2 things I would like to change if possible.
I would like to add the original Z axis optical sensor to the bottom of the bed movement so that will stop the bed from going any further. Is that something that is possible to do even though I am using the a Z probe as the bed leveling and endstop ?
The other thing I would like to change is how fast the Z axis actually moves as I put the bed to the bottom the other day and hit home and it took almost 4 mins to home which is way to long for my liking but I am not sure what I need to change in the config or home files.
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@RAM said in Hypercube Fusion movement help:
The other thing I would like to change is how fast the Z axis actually moves as I put the bed to the bottom the other day and hit home and it took almost 4 mins to home which is way to long for my liking but I am not sure what I need to change in the config or home files.
Here is a copy and paste from my homeZ which does exactly that.
; FAST home Z
G1 Z-740 F450 H1; Lower bed again
G91 ; relative
G1 Z5 F300 ; lower bed 5mm again
G90 ; back to absolute;Slow home Z
G1 Z-10 F60 H1You'll need to play around with those values but hopefully you get the idea.
Or if you use a Z probe, you can change the speed using M558. So in the above example, for fast homing use M558 F450 then for the slow homing use M558 F60 ( or whatever speeds you want).
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@deckingman thank you very much for that.
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@RAM said in Hypercube Fusion movement help:
I would like to add the original Z axis optical sensor to the bottom of the bed movement so that will stop the bed from going any further. Is that something that is possible to do even though I am using the a Z probe as the bed leveling and endstop ?
Technically the endstop will only stop movement during a homing move. You could setup the switch to act as an emergency stop though, but if the M208 is set correctly, the firmware will prevent moving the axis beyond the maxima anyway.
It can be handy to have a Zmax endstop in combination with a probe because it allows you to home the Z axis after a power failure and a print on the bed prevents you using the probe.
Here's an example of doing just that with an Ender 3.
As for the speed of your Z axis, from your config.g it looks like you're using the default values which are very conservative for safety.
M566 Z12.00 ; set maximum instantaneous speed changes (mm/min) M203 Z180.00 ; set maximum speeds (mm/min) M201 Z20.00 ; set accelerations (mm/s^2)Try these settings
M566 Z60.00 ; set maximum instantaneous speed changes (mm/min) M203 Z600.00 ; set maximum speeds (mm/min) M201 Z200.00 ; set accelerations (mm/s^2)You'll need to make these changes to the limits before you'll be able to use higher speeds the way Deckingman shows.
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@Phaedrux Thanks I will change the values once I get my head round the bed mesh leveling which is bending my brain at the moment. but on the plus side thanks to you and everyone else in the Duet forum that has been so helpful I am hoping I will be able to do my 1st test print this weekend.
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@RAM said in Hypercube Fusion movement help:
How much $$ to do the star wars for the dark side theme
Because I was on a roll today....
; 0:/macros/Musical Tunes/Vader.g ; Imperial March (Vader's Theme) G4 P500 M300 S392 P400 G4 P410 M300 S392 P400 G4 P410 M300 S392 P400 G4 P410 M300 S311 P300 G4 P310 M300 S466 P100 G4 P100 M300 S392 P400 G4 P410 M300 S311 P300 G4 P310 M300 S466 P100 G4 P110 M300 S392 P800 G4 P810 M300 S587 P400 G4 P410 M300 S587 P400 G4 P410 M300 S587 P400 G4 P410 M300 S622 P300 G4 P310 M300 S466 P100 G4 P110 M300 S370 P400 G4 P410 M300 S311 P300 G4 P310 M300 S466 P100 G4 P110 M300 S392 P800 G4 P810 M300 S784 P250 G4 P260 M300 S392 P300 G4 P310 M300 S392 P100 G4 P110 M300 S784 P400 G4 P410 M300 S740 P300 G4 P310 M300 S698 P100 G4 P110 M300 S659 P100 G4 P110 M300 S622 P100 G4 P110 M300 S659 P100 G4 P110 G4 P300 M300 S392 P100 G4 P110 G4 P100 M300 S554 P400 G4 P410 M300 S523 P300 G4 P310 M300 S494 P100 G4 P110 M300 S466 P100 G4 P110 M300 S440 P100 G4 P110 G4 P300 M300 S311 P100 G4 P110 G4 P100 M300 S370 P450 G4 P460 M300 S311 P300 G4 P310 M300 S466 P100 G4 P110 M300 S392 P400 G4 P410 M300 S311 P300 G4 P310 M300 S466 P100 G4 P110 M300 S392 P800 G4 P810 -
@Phaedrux You have way too much time on your hands.
My excuse is that I'm now retired, what's yours?
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@deckingman hey maybe I'm semi retired myself.
And well it's not like it's an original composition or anything. I just googled for imperial March Arduino code and the hard part of finding the notes and their durations was already done for me. Then it was just a matter of transcribing those into a list and using find replace to swap the notes for frequencies (I have a handy chart for that already) and changing the duration to milliseconds and building up the gcode command around it. To my surprise it worked the first time. -
@Phaedrux thanks so much for that, it will be getting added to my simplify3d endscript.
I would also like to thank you guys so much for helping me get the printer to the stage that it is at
It finally prints
The 20 x 20 x 20 calibration cube measuring it is.
X 20.34
Y20.34
Z 20.00I don't know if it acceptable on the X & Y axis or if they need to be tweaked and if they do is there a guide I could follow.
Leveling the bed was an absolute nightmare and took me about 5 hours to get it to where it is now.
I ended up realising that for some reason the mesh bed leveling is showing upside down for some strange reason but I have no understanding as to why it is the way it is.The other strange thing I cant work out is when I was starting to heat up for printing the estimations based on (file progress) was showing time that was going up.
I don't know why I keep getting the stringing at the top of the print when it finishes.
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I wouldn't focus too much on the details of such a tiny object. Print something larger or scale that object up to get a better sense of what's going on. Even printing two of them at a time helps.
It looks slightly over extruded, which could explain the larger measured size. But it could also just be from overheating such a tiny object.
Have you calibrated the extruder and filament flow yet?
https://duet3d.dozuki.com/Guide/Ender+3+Pro+and+Duet+Maestro+Guide+Part+4:+Calibration/40#s165
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@Phaedrux I did do part of that but i couldn't work out the formula for the Step 11 Find Maximum Extrusion Rate.
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@Phaedrux got my little maths genius to work it out for me.
I am hoping this is right.
100mm extrusion without slipping was 4mm per second
4 x 3.14 x 1.75/2)2 = 9.61625 so for safety 9Then 0.4 nozzle, 0.2 layer height
9/(0.2*0.4) = 112.5 mm per second printing speed if I am not mistake.If i am wrong could you please I form me where I have gone wrong.
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Yes that seems to check out.
Though 112mm/s may be too fast from a thermal management or mechanical movement perspective. As in, if you print that fast, the molten filament may not have enough time to cool before the next layer leading to surface quality issues. So for small objects with short layer times you may need to slow down or set a minimum layer time. For larger objects it may be perfectly fine.
Or the mechanics of the printer may not be able to handle it without ringing or shaking. You can test for this by creating a gcode file that goes through some series of movements without extrusion, and then use the speed factor to alter the speed for each iteration. You'll be able to see/hear/sense when things are running smoothly, or if there is a resonance or harsh movement. The same thing can be done to find good values for acceleration and jerk.
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@Phaedrux I did do a print at that speed and apart from it warping the print quality was really nice even the supports came out good, it wasn't very high as it was just a clip in led support for the 3030 extrusion frame as it really needs some lighting so I can see what is happening with the print.
I did notice that I have to increase the z height by baby stepping by 0.05 even though I have the mesh bed compensation loaded and I have set the a probe up exactly as dc42 says on his wordpress page and it seems to run a new probe sequence at the start of every print. But if all I have to do to get a perfect 1st layer is put up with adding 0.05 and letting it run the probing everytime then that is fine by me.
Compared to my old printer which was a hictop i3 3dp11 with no bed probing and now looking back only able to get so so print quality, my hypercube fusion is pure enjoyment. It is quite, smooth, fast & the prints are really nice.
I just can't wait for my new E3D gold v6 to arrive to see how much of a difference it will make. I will probably also change to a genuine BMG or see what Bowden setups E3D has to offer to try and improve the printer even more.
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@RAM said in Hypercube Fusion movement help:
I have to increase the z height by baby stepping by 0.05
You can modify your G31 Z value with that 0.05. Consider it a final tuning.
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@Phaedrux oh cool I wasn't sure if I could do that as I didn't know if the probe would go out of sync, it never seems to give me the value below 2.5mm I think it is at 2.56 at the moment. I will change it so it reads 2.61
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@Phaedrux when I add the 0.05 do I just add it in the config.g or do I need to run the whole z-prove calibration again 1st then add it ?
The reason I ask is I added it but it didn't seem to help. I run the bed mesh again and adjusted the bed slightly so could that have caused the issue where it didn't work ? -
@RAM the calibration just finds you the value. You can adjust it afterwards no problem.
Did you add 0.05 to the g31 z or subtract it? If you did one, try the other.
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@Phaedrux I added it but now my new E3D 24v Gold V6 has arrived I will go through the whole calibration process again when it is fitted.
On a different thing would you say it is better to have the dual a setup so it will level the bed or is it more aggravation then it is worth the time of setting it up ?
