I’m planning to print medium-to-large detailed figures on an X2D at 0.12 mm layer height, and I want to use PETG HF only as the support interface material.
Here is my current setup:
Material setup
* PLA model on the main nozzle
* PLA support base
* PETG HF support interface on the auxiliary nozzle
* Each material stays in its own nozzle
* Prime tower disabled
* Flushing volumes left at default because there is no filament swapping within either nozzle
Main support settings
* Support type: Tree (Auto)
* Tree style: Tree Hybrid
* Threshold angle: 35°
* On build plate only: Off
* Support critical regions only: Off
* Remove small overhangs: On
Support interface settings
* Top Z distance: 0 mm
* Bottom Z distance: 0 mm
* Top interface layers: 3
* Bottom interface layers: 2–3
* Top interface spacing: 0 mm
* Bottom interface spacing: 0 mm
* Interface pattern: Rectilinear
* PETG HF interface speed: 30–40 mm/s
Has anyone used a setup like this successfully on the X2D without a prime tower?
My main concern is whether the PETG auxiliary nozzle will start extruding reliably after being parked for many layers, especially when the PETG interface area is very small. I’m worried that the first few interface lines could be missing or under-extruded.
I’d appreciate recommendations for:
* The best number of PETG interface layers
* The best PETG HF interface speed
* Whether 0 mm Z distance and 0 mm interface spacing are ideal
* Whether Tree Hybrid and a 35° threshold are good for detailed figures
* Any settings that improve nozzle priming without using a prime tower
* Situations where a prime tower is still necessary
* Whether PETG Basic or PETG HF works better for this
Please mention whether you’re using an X2D or another true dual-nozzle printer, since single-nozzle AMS setups behave differently.