diff --git a/code/modules/smithing/components/knife_components.dm b/code/modules/smithing/components/knife_components.dm
index f56320488df..1e40446ae5e 100644
--- a/code/modules/smithing/components/knife_components.dm
+++ b/code/modules/smithing/components/knife_components.dm
@@ -3,24 +3,24 @@
 	desc = ABSTRACT_TYPE_DESC
 	icon_state = "knife_blade"
 	part_type = PART_PRIMARY
-	hammer_time = 4
+	hammer_time = 6
 
 /obj/item/smithed_item/component/knife_blade/utility
 	name = "utility knife blade"
 	desc = "Smithed component part of a utility knife. The blade has yet to be honed."
-	materials = list(MAT_METAL = 18000)
+	materials = list(MAT_METAL = 30000)
 	finished_product = /obj/item/kitchen/knife/smithed/utility
 
 /obj/item/smithed_item/component/knife_blade/throwing
 	name = "throwing knife blade"
 	desc = "Lightweight smithed component part of a knife. The shape is optimally balanced."
-	materials = list(MAT_METAL = 9000, MAT_TITANIUM = 9000)
+	materials = list(MAT_METAL = 28000, MAT_TITANIUM = 28000)
 	finished_product = /obj/item/kitchen/knife/smithed/thrown
 
 /obj/item/smithed_item/component/knife_blade/combat
 	name = "combat knife blade"
 	desc = "Heavyweight smithed component part of a knife. A toothed edge runs across the top."
-	materials = list(MAT_TITANIUM = 9000, MAT_PLASMA = 9000)
+	materials = list(MAT_TITANIUM = 28000, MAT_PLASMA = 28000)
 	finished_product = /obj/item/kitchen/knife/smithed/combat
 
 /obj/item/smithed_item/component/knife_handle
@@ -28,22 +28,22 @@
 	desc = ABSTRACT_TYPE_DESC
 	icon_state = "knife_handle"
 	part_type = PART_SECONDARY
-	hammer_time = 2
+	hammer_time = 4
 
 /obj/item/smithed_item/component/knife_handle/utility
 	name = "utility knife handle"
 	desc = "Smithed component part of a utility knife. The handle fits comfortably in your hand."
-	materials = list(MAT_METAL = 6000)
+	materials = list(MAT_METAL = 18000)
 	finished_product = /obj/item/kitchen/knife/smithed/utility
 
 /obj/item/smithed_item/component/knife_handle/throwing
 	name = "throwing knife handle"
 	desc = "Lightweight smithed component part of a knife. There is a small ring on the end of the handle."
-	materials = list(MAT_METAL = 3000, MAT_TITANIUM = 3000)
+	materials = list(MAT_METAL = 10000, MAT_TITANIUM = 10000)
 	finished_product = /obj/item/kitchen/knife/smithed/thrown
 
 /obj/item/smithed_item/component/knife_handle/combat
 	name = "combat knife handle"
 	desc = "Heavyweight smithed component part of a knife. The handle is thick and rugged."
-	materials = list(MAT_TITANIUM = 3000, MAT_PLASMA = 3000)
+	materials = list(MAT_TITANIUM = 10000, MAT_PLASMA = 10000)
 	finished_product = /obj/item/kitchen/knife/smithed/combat
diff --git a/code/modules/smithing/machinery/kinetic_assembler.dm b/code/modules/smithing/machinery/kinetic_assembler.dm
index c7185734974..fdceab36765 100644
--- a/code/modules/smithing/machinery/kinetic_assembler.dm
+++ b/code/modules/smithing/machinery/kinetic_assembler.dm
@@ -24,6 +24,10 @@
 	)
 	/// Amount of extra items made in batches
 	var/batch_extras = 1
+	/// Products that can not be affected by productivity bits
+	var/list/no_productivity_types = list(
+		/obj/item/kitchen/knife/smithed,
+	)
 
 /obj/machinery/smithing/kinetic_assembler/Initialize(mapload)
 	. = ..()
@@ -36,6 +40,7 @@
 	component_parts += new /obj/item/stock_parts/micro_laser(null)
 	component_parts += new /obj/item/stack/sheet/glass(null)
 	batched_item_types = typecacheof(batched_item_types)
+	no_productivity_types = typecacheof(no_productivity_types)
 	RefreshParts()
 
 /obj/machinery/smithing/kinetic_assembler/Destroy()
@@ -266,6 +271,8 @@
 	var/total_extras = clamp(round(1 * i.bit_productivity_mod / 2), 0, 2)
 	if(is_type_in_typecache(finished_product, batched_item_types))
 		total_extras += clamp(round(batch_extras * i.bit_productivity_mod / 2), 1, 4)
+	if(is_type_in_typecache(finished_product, no_productivity_types))
+		total_extras = 0
 	for(var/iterator in 1 to total_extras)
 		var/obj/item/product
 		if(istype(finished_product, /obj/item/smithed_item))