diff --git a/resources/extruders/blocks_mkii_extruder_0.def.json b/resources/extruders/blocks_mkii_extruder_0.def.json
new file mode 100644
index 0000000000..ccedede3d5
--- /dev/null
+++ b/resources/extruders/blocks_mkii_extruder_0.def.json
@@ -0,0 +1,15 @@
+{
+    "version": 2,
+    "name": "Extruder 1",
+    "inherits": "fdmextruder",
+    "metadata": {
+        "machine": "blocks_mkii",
+        "position": "0"
+    },
+
+    "overrides": {
+        "extruder_nr": { "default_value": 0 },
+        "machine_nozzle_size": { "default_value": 0.4 },
+        "material_diameter": { "default_value": 1.75 }
+    }
+}
\ No newline at end of file
diff --git a/resources/extruders/blocks_pros100_extruder_0.def.json b/resources/extruders/blocks_pros100_extruder_0.def.json
new file mode 100644
index 0000000000..84b39435a1
--- /dev/null
+++ b/resources/extruders/blocks_pros100_extruder_0.def.json
@@ -0,0 +1,15 @@
+{
+    "version": 2,
+    "name": "Extruder 1",
+    "inherits": "fdmextruder",
+    "metadata": {
+        "machine": "blocks_pros100",
+        "position": "0"
+    },
+
+    "overrides": {
+        "extruder_nr": { "default_value": 0 },
+        "machine_nozzle_size": { "default_value": 0.8 },
+        "material_diameter": { "default_value": 1.75 }
+    }
+}
\ No newline at end of file
diff --git a/resources/extruders/blocks_pros30_extruder_0.def.json b/resources/extruders/blocks_pros30_extruder_0.def.json
new file mode 100644
index 0000000000..e40f46920c
--- /dev/null
+++ b/resources/extruders/blocks_pros30_extruder_0.def.json
@@ -0,0 +1,15 @@
+{
+    "version": 2,
+    "name": "Extruder 1",
+    "inherits": "fdmextruder",
+    "metadata": {
+        "machine": "blocks_pros30",
+        "position": "0"
+    },
+
+    "overrides": {
+        "extruder_nr": { "default_value": 0 },
+        "machine_nozzle_size": { "default_value": 0.4 },
+        "material_diameter": { "default_value": 1.75 }
+    }
+}
\ No newline at end of file
diff --git a/resources/extruders/blocks_r21_extruder_0.def.json b/resources/extruders/blocks_r21_extruder_0.def.json
new file mode 100644
index 0000000000..93109264f9
--- /dev/null
+++ b/resources/extruders/blocks_r21_extruder_0.def.json
@@ -0,0 +1,15 @@
+{
+    "version": 2,
+    "name": "Extruder 1",
+    "inherits": "fdmextruder",
+    "metadata": {
+        "machine": "blocks_r21",
+        "position": "0"
+    },
+
+    "overrides": {
+        "extruder_nr": { "default_value": 0 },
+        "machine_nozzle_size": { "default_value": 0.4 },
+        "material_diameter": { "default_value": 1.75 }
+    }
+}
\ No newline at end of file
diff --git a/resources/extruders/blocks_zero_extruder_0.def.json b/resources/extruders/blocks_zero_extruder_0.def.json
new file mode 100644
index 0000000000..18d612560a
--- /dev/null
+++ b/resources/extruders/blocks_zero_extruder_0.def.json
@@ -0,0 +1,15 @@
+{
+    "version": 2,
+    "name": "Extruder 1",
+    "inherits": "fdmextruder",
+    "metadata": {
+        "machine": "blocks_zero",
+        "position": "0"
+    },
+
+    "overrides": {
+        "extruder_nr": { "default_value": 0 },
+        "machine_nozzle_size": { "default_value": 0.4 },
+        "material_diameter": { "default_value": 1.75 }
+    }
+}
\ No newline at end of file