Temp change in slicer  

RE:

You usually need a dedicated custom gcode per layer, or just find models on printables that already have that prepared as 3mf file for your specific printer model.

RE: Temp change in slicer

It's been a while so I don't know if the state of art has changed, but I loaded in one of my temperature towers and you can see from this screenshot how I inserted custom gcode where I wanted temperature changes to happen. I started with the high end of my tested temperature range on the bottom of the tower, going to cooler temperatures on the way up. That way if I got to a temperature that was too cold to print reliably (happened a couple times with some more extreme towers) the fail happened after the good print. (Click on image to get the full size)

As I recall, I intentionally used the M104 gcode so the print wouldn't be paused waiting for the temperature to change. In practice the cold filament entering the melt chamber while printing usually cooled the extruder by the target 5°C delta by the time the first layer after the M104 finished printing.

For reference, the temperature tower models that I use I originally got from Thingiverse, I haven't looked to see if they were mirrored anywhere else (though I notice that the temperature tower in OrcaSlicer is supiciously similar without attribution that I've noticed). It includes a couple completed towers and the individual temperature-labeled blocks to build one's own tower in the slicer (which I've done a few times). Here's the repository: https://www.thingiverse.com/thing:2729076

I think this repository was written before slic3r-PE had the capability to add custom g-codes at specific layers because the description shows a couple techniques for using custom gcode in the printer profile. (These techniques should also work in the current generation of PrusaSlicer if you don't like adding custom gcode in the slice preview.)

RE: Temp change in slicer

I wrote some code (well the AI did mostly) to parametrically generate a temperature tower and upload to the printer: https://forum.prusa3d.com/forum/english-forum-general-discussion-announcements-and-releases/filament-calibrator-standalone-gui-for-calibrating-3d-printer-filaments/#post-784955
Can give this a try. I use it for my own stuff (being that I wrote it).

RE: Temp change in slicer

One of my most popular models is my "improved temp tower" https://www.printables.com/model/39810-improved-all-in-one-temperature-and-bridging-tower

Comes preconfigured for pretty much all current Prusa models.

I also offer a "customizable temp tower" https://www.printables.com/model/216967-customizable-all-in-one-temperature-and-bridging-t  

With both models you can see how the gcode is being modified to print at the correct temperature. In the full models, it's in the 3mf file. For the customizable model, the OpenSCAD script spits out the necessary gcode and instructions how to add it.

RE: Temp change in slicer

Posted by: @foxrun3d

One of my most popular models is my "improved temp tower" https://www.printables.com/model/39810-improved-all-in-one-temperature-and-bridging-tower

Comes preconfigured for pretty much all current Prusa models.

I also offer a "customizable temp tower" https://www.printables.com/model/216967-customizable-all-in-one-temperature-and-bridging-t  

With both models you can see how the gcode is being modified to print at the correct temperature. In the full models, it's in the 3mf file. For the customizable model, the OpenSCAD script spits out the necessary gcode and instructions how to add it.

 

This tower looks like the one in hyiger's calibration suite. I was going to bug him about properly attributing the origin of the model, but he attributes his as the "classic OpenSCAD design"... 

RE: Temp change in slicer

Mine is also a remix of an older model, by @tronnic, but that one hasn't been updated in forever while I've been supporting all new Prusa printers.

RE:

@FozRun3D it would be nice to have a smaller and faster print tower, its good for someone who has 10 rolls of the same filament, but fir single roll it might be just a bit excessive to use that much of filament for temp tower 😉

RE: Temp change in slicer

@FozRun3D it would be nice to have a smaller and faster print tower,

Which is exactly why I came up with https://www.printables.com/model/216967

Your choice of temp range, number of steps, step size, etc.

Which is the temp tower I use on the rare occasion I feel I need one.

RE:

@panache

I'm going to recommend you use the model that Fox run shows at the top of his first post  https://www.printables.com/model/39810-improved-all-in-one-temperature-and-bridging-towe r" target="_blank" rel="noopener"> https://www.printables.com/model/39810-improved-all-in-one-temperature-and-bridging-tower

And setting it up the way that @sembazuru shows in his first post, using custom g-code inserted at the divides of the tower, In this way you will learn more, as well the tower that @foxrun3d shows in the link I pasted from his post will give you a greater sample of how the filaments your testing will act in a variety of situations, there are several sample types included in that model if you look at it closely front and back, it can show you how a given filament might act at a given temperature with a certain feature type, its not just the overhanging angles that  you have to look at. If you print your filament on the taller version of the model, and take advantage of all the temp changes, you may notice that some features act differently at certain temperatures. This is what a temp tower is for. The idea is not to print the perfect temp tower from bottom to top, but rather to see how the filament will act at certain temps through the range and then use that gleaned information, and apply that information to that filament when looking at the features of a model you plan to print with that filament.

Don't feel overwhelmed, it's an extremely simple code to learn and has been around for at least 50 years (that's how long I've been using it) and probably much longer, so documentation and assistance is easily found regardless of flavor.

Good luck I'm sure you'll work this out. However if you need more help don't hesitate to ask.

Regards

RE: Temp change in slicer

Oh perfect, idk how I missed that one..., thanks 🙂