diff --git a/GainStation13/icons/obj/fatoray.dmi b/GainStation13/icons/obj/fatoray.dmi
index e6729ed1..e7564456 100644
Binary files a/GainStation13/icons/obj/fatoray.dmi and b/GainStation13/icons/obj/fatoray.dmi differ
diff --git a/code/game/objects/items/grenades/chem_grenade.dm b/code/game/objects/items/grenades/chem_grenade.dm
index 92bc25ea..cf2d7be6 100644
--- a/code/game/objects/items/grenades/chem_grenade.dm
+++ b/code/game/objects/items/grenades/chem_grenade.dm
@@ -597,6 +597,45 @@
 	beakers += B1
 	beakers += B2
 
+//GS13 - fattening grenade presets
+
+/obj/item/grenade/chem_grenade/lipoifier_strong
+	name = "lipoifier grenade"
+	desc = "For when you want everyone in the room to gain a couple hundred pounds."
+	stage = READY
+
+/obj/item/grenade/chem_grenade/lipoifier_strong/Initialize()
+	. = ..()
+	var/obj/item/reagent_containers/glass/beaker/bluespace/B1 = new(src)
+	var/obj/item/reagent_containers/glass/beaker/bluespace/B2 = new(src)
+
+	B1.reagents.add_reagent(/datum/reagent/consumable/lipoifier, 250)
+	B1.reagents.add_reagent(/datum/reagent/potassium, 40)
+	B2.reagents.add_reagent(/datum/reagent/phosphorus, 40)
+	B2.reagents.add_reagent(/datum/reagent/consumable/sugar, 40)
+
+	beakers += B1
+	beakers += B2
+
+
+/obj/item/grenade/chem_grenade/lipoifier_weak
+	name = "lipoifier grenade"
+	desc = "For when you want everyone in the room to gain a couple dozen pounds."
+	stage = READY
+
+/obj/item/grenade/chem_grenade/lipoifier_weak/Initialize()
+	. = ..()
+	var/obj/item/reagent_containers/glass/beaker/large/B1 = new(src)
+	var/obj/item/reagent_containers/glass/beaker/large/B2 = new(src)
+
+	B1.reagents.add_reagent(/datum/reagent/consumable/lipoifier, 40)
+	B1.reagents.add_reagent(/datum/reagent/potassium, 20)
+	B2.reagents.add_reagent(/datum/reagent/phosphorus, 20)
+	B2.reagents.add_reagent(/datum/reagent/consumable/sugar, 20)
+
+	beakers += B1
+	beakers += B2
+
 #undef READY
 #undef WIRED
 #undef EMPTY
diff --git a/code/game/objects/items/stacks/sheets/mineral.dm b/code/game/objects/items/stacks/sheets/mineral.dm
index 8d5d534b..dd45f3d4 100644
--- a/code/game/objects/items/stacks/sheets/mineral.dm
+++ b/code/game/objects/items/stacks/sheets/mineral.dm
@@ -290,7 +290,7 @@ GLOBAL_LIST_INIT(bananium_recipes, list ( \
 	sheettype = "calorite"
 	materials = list(MAT_CALORITE=MINERAL_MATERIAL_AMOUNT)
 	novariants = TRUE
-	grind_results = list(/datum/reagent/consumable/lipoifier = 10)
+	grind_results = list(/datum/reagent/consumable/lipoifier = 5)
 	point_value = 40
 	merge_type = /obj/item/stack/sheet/mineral/calorite
 
diff --git a/code/modules/reagents/reagent_containers/glass.dm b/code/modules/reagents/reagent_containers/glass.dm
index cb38d885..e2468c83 100644
--- a/code/modules/reagents/reagent_containers/glass.dm
+++ b/code/modules/reagents/reagent_containers/glass.dm
@@ -254,6 +254,12 @@
 /obj/item/reagent_containers/glass/beaker/synthflesh
 	list_reagents = list(/datum/reagent/medicine/synthflesh = 50)
 
+/obj/item/reagent_containers/glass/beaker/lipoifier
+	list_reagents = list(/datum/reagent/consumable/lipoifier = 50) //GS13
+
+/obj/item/reagent_containers/glass/beaker/cornoil
+	list_reagents = list(/datum/reagent/consumable/cornoil = 50) //GS13
+
 /obj/item/reagent_containers/glass/bucket
 	name = "bucket"
 	desc = "It's a bucket."
diff --git a/code/modules/research/techweb/all_nodes.dm b/code/modules/research/techweb/all_nodes.dm
index 4ce6c473..35819e06 100644
--- a/code/modules/research/techweb/all_nodes.dm
+++ b/code/modules/research/techweb/all_nodes.dm
@@ -1158,7 +1158,9 @@
 	prereq_ids = list("biotech") //remember to add "engineering"
 	design_ids = list("alien_scalpel")
 	research_costs = list(TECHWEB_POINT_TYPE_GENERIC = 10)
+	boost_item_paths = list(/obj/item/gun/energy/fatoray)
 	export_price = 5000
+	hidden = TRUE
 
 /datum/techweb_node/nutri_tools
 	id = "nutritech_tools"