diff --git a/resources/definitions/eazao_m500.def.json b/resources/definitions/eazao_m500.def.json
index 965dc3b520..f4ad1dd03e 100644
--- a/resources/definitions/eazao_m500.def.json
+++ b/resources/definitions/eazao_m500.def.json
@@ -10,6 +10,7 @@
         "file_formats": "text/x-gcode",
         "has_machine_quality": false,
         "machine_extruder_trains": { "0": "eazao_m500_extruder_0" },
+        "preferred_material": "eazao_clay",
         "preferred_quality_type": "normal"
     },
     "overrides":
diff --git a/resources/definitions/eazao_m600.def.json b/resources/definitions/eazao_m600.def.json
index ece6cdac68..e76d923909 100644
--- a/resources/definitions/eazao_m600.def.json
+++ b/resources/definitions/eazao_m600.def.json
@@ -10,6 +10,7 @@
         "file_formats": "text/x-gcode",
         "has_machine_quality": false,
         "machine_extruder_trains": { "0": "eazao_m600_extruder_0" },
+        "preferred_material": "eazao_clay",
         "preferred_quality_type": "normal"
     },
     "overrides":
diff --git a/resources/definitions/eazao_m700.def.json b/resources/definitions/eazao_m700.def.json
index 37816843e3..98e35f46e1 100644
--- a/resources/definitions/eazao_m700.def.json
+++ b/resources/definitions/eazao_m700.def.json
@@ -10,6 +10,7 @@
         "file_formats": "text/x-gcode",
         "has_machine_quality": false,
         "machine_extruder_trains": { "0": "eazao_m700_extruder_0" },
+        "preferred_material": "eazao_clay",
         "preferred_quality_type": "normal"
     },
     "overrides":
diff --git a/resources/definitions/eazao_potter.def.json b/resources/definitions/eazao_potter.def.json
index 7811014658..110ea1efb5 100644
--- a/resources/definitions/eazao_potter.def.json
+++ b/resources/definitions/eazao_potter.def.json
@@ -10,6 +10,7 @@
         "file_formats": "text/x-gcode",
         "has_machine_quality": false,
         "machine_extruder_trains": { "0": "eazao_potter_extruder_0" },
+        "preferred_material": "eazao_clay",
         "preferred_quality_type": "normal"
     },
     "overrides":
diff --git a/resources/definitions/eazao_zero.def.json b/resources/definitions/eazao_zero.def.json
index cd572df924..d4ae902fa6 100644
--- a/resources/definitions/eazao_zero.def.json
+++ b/resources/definitions/eazao_zero.def.json
@@ -10,6 +10,7 @@
         "file_formats": "text/x-gcode",
         "has_machine_quality": false,
         "machine_extruder_trains": { "0": "eazao_zero_extruder_0" },
+        "preferred_material": "eazao_clay",
         "preferred_quality_type": "normal"
     },
     "overrides":