Hello, for my first post I just came across a video on Facebook about Creality. They introduced an experimental feature where the print rises above the printer base, so the prime tower doesn’t have to be as tall as the main print.
Is this something we could see on the H2D? Since we can remove the glass, I assume it could also work for prints that don’t require a controlled chamber temperature.
It looks like a useful feature. Here are a GIF from the video — I haven’t found any online videos discussing it yet.
i am sorry for the speed of the GIF but the limit is 5 MO, and i wanted to have the whole process
and some screenshoot
see how tiny the prime tower is ?
the video can be found at this adress on facebook
avoid making prime towers of the same height
so any one of bambu people can tell me if we also can get that ? since its juste some code and nothing else
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I am not sure, if I get it. You are printing an object at layer height X (e.g. 100), than the print bed goes up all the way to “print” the pruge tower at layer height Y (e.g. 2) and thant the print bed goes back to layer height X+1 for the next layer?
What is the benefit of this time consuming process?
You actually don’t waste much filament with this method. Have you seen the height of the print? Normally, the purge tower would have to be just as tall, which uses a lot more material.
Of course, this is mainly useful for large prints that don’t involve frequent color changes — like the vase the person was printing in the video.
You also need enough clearance for the extruder to move back down, so it won’t work for every print.
My main point was just about having the option to print like this. On a printer that costs over €2000, I think it’s fair to expect more flexibility.
but yes for tall print it could be very usefull
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So it primes the nozzle, then sits there midair waiting for 10 seconds for the z to readjust? That nozzle needs to be reprimed by then…
This is saving on filament change material, not prime material cuz this is not priming
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a prime tower serves multiple purposes:
- obviously, clean the nozzle to remove strands. → yes this works
- balance the pressure inside the nozzle.-> no because it’s not printing at normal speeds
- prevent dripping on the part → no because it has to wait for a long time before the next print and by that time the filament would have already become overcooked and dripped
- remove overheated filaments → no because the travel time after priming is too long.
This approach cannot do 2,3 and 4.
However I do see what you mean efficient here. For a few color swaps in a dual nozzle system it does work I think. the only problem to overcome is the filament dripping.
It would have been great if h2d implemented a prime pad near its chute. But one can dream a lot…
Plus not to mention all that traveling, just how accurate is the Z height going to stay……………
Nice, save some cheap filament, increase wear on Z axis components with unnecessary Z rapids over and over, and associated z accuracy concerns. Great trade-off 
I would never use this feature and can imagine a few other risks as well (crashing anyone? Let’s enable Bambu users to smash the AMS off the roof?)
