diff --git a/oregen-manager.lua b/oregen-manager.lua
index 7006526..7493801 100644
--- a/oregen-manager.lua
+++ b/oregen-manager.lua
@@ -28,6 +28,8 @@ local KEEP_STOCKED = {
     ["tfmg:nickel_nugget"] = 4 * 64,
     ["tfmg:lithium_nugget"] = 64,
     ["tfmg:bauxite_powder"] = 4 * 64,
+    ["minecraft:flint"] = 0,
+    ["minecraft:andesite"] = 4 * 64,
 }
 
 local GLOBAL_LIMS = {
@@ -52,9 +54,15 @@ local LIMIT_EXCEPTIONS = {
         lower = -1,
         upper = 0,
     },
+    ["minecraft:flint"] = {
+        lower = 64,
+        upper = 2 * 64,
+    },
 }
 
 -- if these exist, they will be used up
+-- "limit" is the limit on the amt sent at a time
+-- "keep" is the amount not to use up
 local PRODUCTS = {
     {"create:crimsite", CRUSHER_ADDR},
     {"create:crushed_raw_iron", MELTER_ADDR},
@@ -67,12 +75,12 @@ local PRODUCTS = {
     {"minecraft:sand", WASHER_ADDR},
     {"minecraft:clay_ball", SMELTER_ADDR},
     {"minecraft:brick", HAUNTER_ADDR},
-    {"minecraft:flint", CRUSHER_ADDR},
+    {"minecraft:flint", CRUSHER_ADDR, keep = 4 * 64},
     {"minecraft:nether_bricks", CRUSHER_ADDR},
     {"minecraft:basalt", CRUSHER_ADDR},
-    {"create:crushed_raw_silver", WASHER_ADDR, 16},
+    {"create:crushed_raw_silver", WASHER_ADDR, limit = 16},
     {"minecraft:calcite", CRUSHER_ADDR},
-    {"create:crushed_raw_nickel", WASHER_ADDR, 32},
+    {"create:crushed_raw_nickel", WASHER_ADDR, limit = 32},
     {"tfmg:bauxite", CRUSHER_ADDR},
 }
 
@@ -161,6 +169,21 @@ local RECIPES = {
         addr = PRESS_ADDR,
         limit = 6,
     },
+    ["minecraft:flint"] = {
+        ingredients = {
+            {"minecraft:gravel", 64},
+        },
+        addr = WASHER_ADDR,
+        limit = 8,
+    },
+    ["minecraft:andesite"] = {
+        ingredients = {
+            {"minecraft:flint", 64},
+            {"minecraft:gravel", 32},
+        },
+        addr = PRESS_ADDR,
+        limit = 6,
+    },
 }
 
 local SLEEP_T = 20
@@ -219,9 +242,11 @@ function cycleItems (ticker, items)
         return makeRequest(item, amt - limit, addr, limit_override)
     end
     for _, pair in pairs(PRODUCTS) do
-        local name, addr, limit = pair[1], pair[2], pair[3]
+        local name, addr, limit, keep = pair[1], pair[2], pair.limit, pair.keep
         if items[name] ~= nil then
             local amt = items[name]
+            if keep ~= nil then amt = amt - keep end
+            if amt < 0 then amt = 0 end
             makeRequest(name, amt, addr, limit)
         end
     end