I owned a Prusa Mk3 (bed slinger) and currently own a Voron 2.4 (CoreXY with flying gantry) and a Prusa Core One (CoreXY with static gantry), my 2 cents:
Bed slingers are cheap and reliable. Their layout makes sure the axis are always rigid and aligned or at the very least they are very easy to align if they are not.
They do have a giant disadvantage though which is shaking the print on the Y axis. For small prints that is negligible but as you go higher it becomes a disaster quite quickly. I could never print thin and high support structure along the X axis on my Mk3, it would just tip over or break once it reaches a certain height. Same issue with lithophanes. If I printed them on the wrong axis, they would fail or become distorted as the bed shakes.
I bought and built the Voron 2.4 primarily because Prusa did not release a CoreXY for such a long time and I did not want to have that same issues again since lots of my prints are pretty tall and thin.
In principle, the flying gantry is my favorite. The bed sits totally still and only the head moves, ideal for thin and tall prints. It’s also really cool to see the flying gantry level itself, almost like magic.
There’s one issue with flying gantries that I encountered multiple times on my Voron, which is that it needs very precise calibration in order to produce accurate results.
Due to the flying gantry there are just so many variables that can influence the end result. It’s almost impossible to determine exactly where the issue is coming from without much time for diagnosing. Skewed frame, skewed gantry, skewed Y axis, wrong or uneven belt tension and so much more. It’s a real pain to diagnose print issues. My Voron still has a very tiny skew and I have no idea where it’s coming from.
The Core One has a static gantry, which is in my opinion the best design I have used so far. Compared to the usual static gantry like on the Voron Trident, the Core One gantry has one solid 4 sided steel piece which impacts view a little bit but you can be certain that the gantry is square.
This drastically reduces the amount of possible issues. It still needs almost perfect belt tensioning so the gantry does not skew but other than that the only other thing that needs to match is the alignment between bed and XY axis, that’s about it. It was incredibly easy to get the skew on my Core One kit to pretty much zero.
No more bed slingers for me and seeing the flying gantry once was enough. CoreXY with static gantry from now on until something better comes along.
I owned a Prusa Mk3 (bed slinger) and currently own a Voron 2.4 (CoreXY with flying gantry) and a Prusa Core One (CoreXY with static gantry), my 2 cents:
Bed slingers are cheap and reliable. Their layout makes sure the axis are always rigid and aligned or at the very least they are very easy to align if they are not.
They do have a giant disadvantage though which is shaking the print on the Y axis. For small prints that is negligible but as you go higher it becomes a disaster quite quickly. I could never print thin and high support structure along the X axis on my Mk3, it would just tip over or break once it reaches a certain height. Same issue with lithophanes. If I printed them on the wrong axis, they would fail or become distorted as the bed shakes.
I bought and built the Voron 2.4 primarily because Prusa did not release a CoreXY for such a long time and I did not want to have that same issues again since lots of my prints are pretty tall and thin.
In principle, the flying gantry is my favorite. The bed sits totally still and only the head moves, ideal for thin and tall prints. It’s also really cool to see the flying gantry level itself, almost like magic.
There’s one issue with flying gantries that I encountered multiple times on my Voron, which is that it needs very precise calibration in order to produce accurate results.
Due to the flying gantry there are just so many variables that can influence the end result. It’s almost impossible to determine exactly where the issue is coming from without much time for diagnosing. Skewed frame, skewed gantry, skewed Y axis, wrong or uneven belt tension and so much more. It’s a real pain to diagnose print issues. My Voron still has a very tiny skew and I have no idea where it’s coming from.
The Core One has a static gantry, which is in my opinion the best design I have used so far. Compared to the usual static gantry like on the Voron Trident, the Core One gantry has one solid 4 sided steel piece which impacts view a little bit but you can be certain that the gantry is square.
This drastically reduces the amount of possible issues. It still needs almost perfect belt tensioning so the gantry does not skew but other than that the only other thing that needs to match is the alignment between bed and XY axis, that’s about it. It was incredibly easy to get the skew on my Core One kit to pretty much zero.
No more bed slingers for me and seeing the flying gantry once was enough. CoreXY with static gantry from now on until something better comes along.