diff --git a/kubejs/server_scripts/tfg/primitive/tags.primitive.js b/kubejs/server_scripts/tfg/primitive/tags.primitive.js
index 02915188c..22246eba6 100644
--- a/kubejs/server_scripts/tfg/primitive/tags.primitive.js
+++ b/kubejs/server_scripts/tfg/primitive/tags.primitive.js
@@ -85,4 +85,29 @@ function registerTFGPrimitiveBlockTags(event) {
 	//added for QOL but doesnt harvest anything
 	event.add('tfg:harvester_harvestable', 'firmalife:grape_fluff_red')
 	event.add('tfg:harvester_harvestable', 'firmalife:grape_fluff_white')
+}
+
+function registerTFGPrimitiveFluidTags(event) {
+	event.add('tfg:usable_in_small_gear_mold', 'gtceu:copper')
+	event.add('tfg:usable_in_small_gear_mold', 'gtceu:tin')
+	event.add('tfg:usable_in_small_gear_mold', 'gtceu:sterling_silver')
+	event.add('tfg:usable_in_small_gear_mold', 'gtceu:bismuth_bronze')
+	event.add('tfg:usable_in_small_gear_mold', 'gtceu:bronze')
+	event.add('tfg:usable_in_small_gear_mold', 'gtceu:zinc')
+	event.add('tfg:usable_in_small_gear_mold', 'gtceu:silver')
+	event.add('tfg:usable_in_small_gear_mold', 'gtceu:potin')
+	event.add('tfg:usable_in_small_gear_mold', 'gtceu:bismuth')
+	event.add('tfg:usable_in_small_gear_mold', 'gtceu:lead')
+	event.add('tfg:usable_in_small_gear_mold', 'gtceu:nickel')
+	event.add('tfg:usable_in_small_gear_mold', 'gtceu:brass')
+	event.add('tfg:usable_in_small_gear_mold', 'gtceu:gold')
+	event.add('tfg:usable_in_small_gear_mold', 'gtceu:red_alloy')
+	event.add('tfg:usable_in_small_gear_mold', 'gtceu:black_bronze')
+	event.add('tfg:usable_in_small_gear_mold', 'gtceu:rose_gold')
+
+	event.add('tfg:usable_in_rod_mold', 'gtceu:red_alloy')
+	event.add('tfg:usable_in_rod_mold', 'gtceu:bronze')
+	event.add('tfg:usable_in_rod_mold', 'gtceu:bismuth_bronze')
+	event.add('tfg:usable_in_rod_mold', 'gtceu:black_bronze')
+	event.add('tfg:usable_in_rod_mold', 'gtceu:brass')
 }
\ No newline at end of file
diff --git a/kubejs/server_scripts/tfg/tags.js b/kubejs/server_scripts/tfg/tags.js
index 0aec9d510..7d5730ff0 100644
--- a/kubejs/server_scripts/tfg/tags.js
+++ b/kubejs/server_scripts/tfg/tags.js
@@ -137,6 +137,8 @@ const registerTFGBlockTags = (event) => {
 //#region Fluids
 const registerTFGFluidTags = (event) => {
 
+	registerTFGPrimitiveFluidTags(event)
+
 	event.add('tfg:clean_water', 'minecraft:water')
 	event.add('tfg:clean_water', 'tfc:river_water')
 	event.add('tfg:clean_water', 'tfc:spring_water')
diff --git a/kubejs/startup_scripts/tfg/primitive/items.primitive.js b/kubejs/startup_scripts/tfg/primitive/items.primitive.js
index 4b38b1910..210b42f18 100644
--- a/kubejs/startup_scripts/tfg/primitive/items.primitive.js
+++ b/kubejs/startup_scripts/tfg/primitive/items.primitive.js
@@ -144,6 +144,7 @@ function registerTFGPrimitiveItems(event) {
 		.texture("fluid", "tfg:item/mold/fired/rod_mold_overlay")
 		.tag('tfc:fired_molds')
 		.tag('tfc:molds')
+		.fluidTagAccept('tfg:usable_in_rod_mold')
 		.tfcccAllowedInMoldTable([
 			"XXXXXXXXXXXXXX",
 			"XXXXXXXXXXXXXX",
@@ -167,6 +168,7 @@ function registerTFGPrimitiveItems(event) {
 		.texture("fluid", "tfg:item/mold/fired/small_gear_mold_overlay")
 		.tag('tfc:fired_molds')
 		.tag('tfc:molds')
+		.fluidTagAccept('tfg:usable_in_small_gear_mold')
 		.tfcccAllowedInMoldTable([
 			"XXXXXXXXXXXXXX",
 			"XXXXXXX   XXXX",
@@ -190,6 +192,7 @@ function registerTFGPrimitiveItems(event) {
 		.texture("fluid", "tfg:item/mold/fired/nugget_mold_overlay")
 		.tag('tfc:fired_molds')
 		.tag('tfc:molds')
+		.fluidTagAccept('tfc:usable_in_ingot_mold')
 		.tfcccAllowedInMoldTable([
 			"XXXXXXXXXXXXXX",
 			"XXXXXXXXXXXXXX",