diff --git a/resources/definitions/fdmprinter.def.json b/resources/definitions/fdmprinter.def.json
index af08b23cb2..5ab88de33f 100644
--- a/resources/definitions/fdmprinter.def.json
+++ b/resources/definitions/fdmprinter.def.json
@@ -6596,18 +6596,17 @@
"prime_tower_mode":
{
"label": "Prime Tower",
- "description": "Print a tower next to the model, which serves to prime the material after each nozzle switch.- None: do not generate a prime tower
- Bucket: generate a solid prime bucket in which secondary materials are primed
- Sparse bucket: generate a prime bucket while trying to waste as less material as possible
- Sparse: generate a prime tower as sparse as possible. This will save time and filament, but is only possible if the used materials adhere to each other.
",
+ "description": "Print a tower next to the model, which serves to prime the material after each nozzle switch.- None: do not generate a prime tower
- Bucket: generate a bucket in which secondary materials are primed
- Sparse: generate a prime tower as sparse as possible. This will save time and filament, but is only possible if the used materials adhere to each other.
",
"type": "enum",
+ "value": "'optimized' if all(material_type == extruderValues('material_type')[0] for material_type in extruderValues('material_type')) else 'optimized_consistent'",
"options":
{
"none": "None",
- "default": "Bucket",
- "optimized_consistent": "Sparse bucket",
+ "optimized_consistent": "Bucket",
"optimized": "Sparse"
},
- "default_value": "default",
+ "default_value": "none",
"enabled": "extruders_enabled_count > 1",
- "resolve": "(extruders_enabled_count > 1) and any(extruderValues('prime_tower_mode'))",
"settable_per_mesh": false,
"settable_per_extruder": false
},