Spoolholder remix 3kg with ptfe tubes
Unsplit the file to print it standing up, should be strong enough with like 4 walls and decent infill.
Added grooves to place ptfe tubes to reduce friction, which might become a problem with heavy spools. I was not sure where it sits so it put 5 positions, just use one or two slots where the spools sits.
Edit:
added a thicker and even longer version. It worked but the filament sensor was a bit close and the whole thing was bending a bit.
Using this for esun pla 3kg spools on my Sv07 Plus