Re: Tower!3D Activation Unlock Code And Serial
Sofie Kovalcheck
I just learned how to do this. In Cura up on the menu click Extensions, Post-Processing, Modify G-code. Add a ChangeAtZ script. Specify Trigger for which layer in the slice you want to change temp. Check Change Extruder 1 Temp and type what temp you want. Always add them highest temp at the bottom then lower the temp going up. Then when you slice it again this is added in the gcode. Don't forget to delete them before you print something else. I just did one with Hatchbox PLA from 220 to 180.
They print the text in the side of the tower.. I guess I should have known this since an STL can't have temp commands encoded, but since it was in a library of cal objects I expected that it was gcode.
I should say don't forget to delete before slicing. But there is a little hammer and wrench icon that will show up next to the slice button telling you there are Post Processing Scripts active that will be added.
I've setup the scripts in the ChangeAtZ (experimental) script. Octoprint is ignoring them however. In fact, Octoprint is ignoring the temp settings from my Cura profile for any of the calibration objects. What am I missing?
However, even when I run this test print with post processing set up like the video above I get night and day results with no noticeable change in extrusion per block. The video also doesn't tell the viewer what presets should the extruder be put on 0-1mm. He doesn't explain that if you have a direct extruder that even 0.25 change will be drastic compared to other extruder types that will vary from 5mm to 7.5mm. He doesn't state about zhop setting or about relative extrusion setting. I think some of these videos are helpful but if your not explaining all that's needed your just giving the viewer a pass to take 2 steps back and get discouraged. I personally haven't found any good video about retraction towers at all other than this link below that more or less just explains why stringing happens. but there is not one extensive video out there that explains how to configure and calibrate a new real. Anyone can tell you to calibrate your temp, extrusion, flow and speed but If you dont teach the steps in between its pretty useless.
I have two photos both ran with post production extruder tower scripts one started at 0mm and the other started at 1mm with relative extrusion on. there is no step up no change in extrusion at all and both prints are horribly different with a very minimal change of 1mm. how ever on the first print starting at 0mm it was suppose to raise extruder level by 1mm every block and at 5mm there is still the same stringing. When started at 1mm stringing is mostly 99% gone this states to me that the post processing script is not working at all. I can tell the temp tower worked because I can physically watch on the LCD the temp change.
Hello group. I am very new to 3d printing. I received an old Davinci 1.0a a couple years ago. I first had to install a E3d hot end. Then muddle my way through the Repiter firmware setup. I eventually was able to print with the machine. My prints are OK, not great. So in my attempt to better my results I have downloaded a couple different Temp Towers from Thingaverse. I have also downloaded and installed the newest version of Prusa (v 2.4.1 I think) I can slice my .STL file and load the G code to my printer. The print will print, but the temps are not changing from the temps that I designated in Prusa. I designated 270* for first layer and 270* for remaining layers. The temps stayed @ 270 for all layers. Not surprising as that is what I told the Prusa to do. So I then changed my temps to 270* first layer and default (200*) for remaining layers. Print again did as it was told 270* first then 200* for remaining. I had to cancel the mess it was printing after confirming the temps.
There are several ways to do it. Depending on on familiar you are with using macro's to simpler select and click. Probably the easiest is the select the layer and add gcode.
Temp towers usually start at the hottest you want to check. So set the filament profile up like that and then slice. Once you have sliced you can use the layer slider on the preview to add in custom gcode. Normally you can click the plus icon on the slider to insert a colour change command but you can also right click the plus and select custom gcode. Then you just enter in the gcode for your new desired temperature for example M109 S220 to set and wait for 220 . You can add in the desired temps at each level of your temp tower model.
In the slicer, we will adapt the gcode to vary the temperature automatically. This depends on the slicers that is going to be used, here we will use two of the most used slicers: CURA and PrusaSlicer.
Click on add script and add "ChangeAtZ" and check the option "Change extruder 1 Temp" which is where we will enter the temperature of the second step. We also enter the height of 16 mm which is where the first step ends and the second begins, i.e. the place where we want the temperature change. Make sure to select the 'Apply to' drop-down menu's 'successive layers' option in order to apply the effect to multiple layers.
In the window write the temperature change command, which is M104, then indicate the new temperature, which is written in numerical format and placing an "S" in front of the number. For example, in case of PLA, in this first step the temperature should be changed to 220 degrees, so the code to entered would be: M104 S220.
The same procedure is used to change temperature for all subsequent steps. In other words, the step change layer is selected and a temperature modification is added.For example, the step change layer is selected and a temperature modification is added.
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At the rate PrusaSlicer development is going, niceties like that might be in the cards for the future. Until very recently, we were hoping to get basic functionality covered in most slicers. At least the procedure is more-or-less portable between slicers.
FYI, in the current alpha releases for the next version of PrusaSlicer there is supposed to be functionality for this. I haven't downloaded and played with the 2.2.0 alpha builds yet (as of this writing, development is up to alpha2, check here: for the latest release), but the release summary for 2.2.0 alpha1 (scroll down a bit on the above link) shows a screenshot of adding a temperature change gcode at a specified layer using the GUI.
Another thing that can help is based on the fact that some temperature tower comes in parts and we have to mount the desired parts.
Since the PrusaSlicer does not allow to put an object in the air, we need to add the other objects using the left-click and choosing to add a part.
I'm glad you like it. One thing that puzzled me for a while was that int(layer_z / 8) gave an error. Presumably for simplifying the parser, expressions inside function calls need to be wrapped in parentheses.
I've been checking out Supermerill's latest fork, re-branded as SuperSlicer. He added some auto-generated calibration items. I haven't had a chance to try printing any of them yet (still busy printing COVID shield parts), but apparently the auto-generated temperature tower is based on the gaaZolee's Smart Temperature Tower that I use and @gutenbar took a screenshot of, above.
Great question. M109 would work too, but keep in mind this g-code statement gets executed at every layer change - even on layers where the temperature won't actually change. The firmware is slow and can pause unnecessarily long with M109 even when the temperature is already at the target - this could introduce artifacts at the pause point. For 5 degrees or less, M104 is fast enough where it won't matter.
It's so you can do a few more things that aren't temperature-dependent. You just minimize the amount of time it takes to get to the final M109 temp. For a temp tower, the amount of time to increase/decrease temps to the next increment are minimal and will usually happen within one layer, so it works well for temp towers. Otherwise, you have to move the nozzle away while the nozzle temp changes to avoid melting part of the print.
For startup gcode, there's no reason to do it if you're not putting anything in between, yet there's no reason not to have both in case you later want to stick something in there. On other printers, I will do something like:
There are plenty of things to do in start gcode that don't require extruding filament. The 24V Mk3 heats up fairly quickly, but 12V systems will be slower. You could do something like home X & Y in between for example. It's really just a personal preference.
Bit tedious. Cura has a couple of great calibration print generator plugins. Does prusa have anything? Bambu really ought to do some basic temperature and retraction towers or distribute projects for a selection of them.
I did not even know that was a thing. But this is exactly what I needed for temperature changes. Also do you know if there is a way to change the infill density based on the layer hight? Would you apply this same method?
I just ordered an A1 and it will be my first ever 3D printer. While that is shipping I am prepping some calibration files. One of those files is the Temp Tower. I got the g-code to run under the Post-processing scripts section. BUT I wanted to use the M109 command " M109 - Wait for Hotend Temperature" h t t p s colon // marlinfw dot org/docs/gcode/M109 dot html Which I found when doing to research.
In case this helps someone else new to Bambu and Studio and has some doubts about using custom code for fear of hurting somehting, I just did what @Zero said above in Studio on my P1S and it worked perfectly.
M109 worked well. One user said it would not hold for the temp to rise but I set M109 one layer short of where I wanted it to start. I was raising 5C at a time and by the time the layer was printed, it was at temp. So it worked really well.
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