diff --git a/README.md b/README.md
index 460e37d..2e9063b 100644
--- a/README.md
+++ b/README.md
@@ -17,3 +17,58 @@ See changelog.txt
 
 ### Localization
 
+
+
+
+## Description
+
+"The truth is  the pathetically, stupidly, inconveniently obvious truth is  helping only ourselves is bad and helping each other is good." - *Steve Basilone & Annie Mebane*
+
+----
+
+Adds tin ore, tin plates, solder, organotins, and (optionall) tinned cable to the game.
+
+Tin is an early game resource and is slightly easier to process than other metals. This mod largely retains the vanilla feel and is not very complex on its own. If used alongside many of the other BZ mods, the game will become quite a bit more complex.
+
+If you want a vanilla-esque game with some tweaks, try this mod, or perhaps a less complex one like [Titanium](https://mods.factorio.com/mod/bztitanium) or [Lead](https://mods.factorio.com/mod/bzlead).
+
+### Details
+
+Tin ore is smelted directly to aluminum plates. Most tin plates go into solder (with [https://mods.factorio.com/mod/bzlead](lead plates) if available) and organotins, an ingredient used in plastic.
+
+Supported compatible mods:
+
+- Space Exploration (>= 0.6.0) & AAI
+- Krastorio 2
+- 248k (beta)
+- Several other mods like Deadlock Stacking, Deadlock Crating, etc.
+
+Coming soon: RSO
+Coming soon: FE+, 5Dim's, ModMash, etc.
+Planned but not yet supported: Omnimatter, Simple Compress, and much more.
+
+Many other mods are compatible, but not yet fully supported. Compatibility suggestions always appreciated.
+
+---- 
+Special thanks to 
+
+- The community, for all the suggestions, feedback, and bug reports!
+- [snouz](https://mods.factorio.com/user/snouz) (recolored ore graphics, thumbnail style)
+- https://www.flickr.com/photos/free-stock/6837291528/ for beta solder icon (modified from public domain image)
+
+Localization thanks to
+
+----
+
+### Detailed list of changes
+See FAQ
+
+### Detailed list of changes (incomplete)
+
+#### Vanilla
+
+#### Krastorio 2
+
+#### Space Exploration & AAI
+
+#### Other
diff --git a/changelog.txt b/changelog.txt
index da0843d..fc2a6fd 100644
--- a/changelog.txt
+++ b/changelog.txt
@@ -1,6 +1,6 @@
 ---------------------------------------------------------------------------------------------------
 Version: 0.0.1
-Date: 2022-07-04
+Date: 2022-07-05
   Features:
     - Alpha release. Adds tin, solder, organotins, and (optionally) tinned cable
     - Compatible with Krastorio 2
diff --git a/data-util.lua b/data-util.lua
index 0994028..8b49132 100644
--- a/data-util.lua
+++ b/data-util.lua
@@ -551,7 +551,7 @@ end
 -- Set recipe category
 function util.set_category(recipe_name, category)
   if me.bypass[recipe_name] then return end
-  if data.raw.recipe[recipe_name] then
+  if data.raw.recipe[recipe_name] and data.raw["recipe-category"][category] then
     me.add_modified(recipe_name)
     data.raw.recipe[recipe_name].category = category
   end
@@ -601,7 +601,7 @@ end
 
 -- Add crafting category to an entity
 function util.add_crafting_category(entity_type, entity, category)
-   if data.raw[entity_type][entity] then
+   if data.raw[entity_type][entity] and data.raw["recipe-category"][category] then
       for i, existing in pairs(data.raw[entity_type][entity].crafting_categories) do
         if existing == category then
           log(entity.." not adding "..category.." -- duplicate")
diff --git a/info.json b/info.json
index 3ef91ba..9014554 100644
--- a/info.json
+++ b/info.json
@@ -8,7 +8,7 @@
     "homepage": "",
     "dependencies": [
       "base >= 1.1.0",
-      "? bzfoundry",
+      "? bzfoundry >= 0.2.1",
       "? bztitanium >= 1.2.0",
       "? bzlead >= 1.2.0",
       "? bzzirconium >= 0.6.0",
@@ -17,6 +17,7 @@
       "? space-exploration >= 0.6.0",
       "? aai-industry",
       "? Krastorio2",
+      "? sand-and-glass",
       "? deadlock-beltboxes-loaders",
       "? DeadlockCrating"
     ],
diff --git a/locale/en/tin.cfg b/locale/en/tin.cfg
index 4cfd246..eff2ccf 100644
--- a/locale/en/tin.cfg
+++ b/locale/en/tin.cfg
@@ -26,6 +26,7 @@ organotins=Organotins
 tinned-cable=Tinned cable
 organotin-chemistry=Organotin chemistry
 tin-matter-processing=Tin conversion
+glassmaking=Glassmaking
 
 [technology-description]
 enriched-tin=Enrich tin ore, purifying with sulfuric acid [fluid=sulfuric-acid] and water [fluid=water], improving the final yield. Produce dirty water [fluid=dirty-water] as a byproduct.
diff --git a/tin-recipe-updates.lua b/tin-recipe-updates.lua
index 7ae28f4..56959bb 100644
--- a/tin-recipe-updates.lua
+++ b/tin-recipe-updates.lua
@@ -52,13 +52,13 @@ else
     util.replace_some_ingredient("glass-from-sand", "sand", 1, "tin-plate", 1)
     util.add_product("glass-from-sand", {type="item", name="tin-plate", amount=1, probability=0.8})
     util.set_main_product("glass-from-sand", "glass")
-    util.set_to_founding("glass-from-sand")
+    util.set_category("glass-from-sand", "basic-founding")
 
     -- sand and glass
-    util.replace_some_ingredient("sng-glass-plate", "sand", 1, "tin-plate", 1)
+    util.replace_some_ingredient("sng-glass-plate", "sng-sand", 1, "tin-plate", 1)
     util.add_product("sng-glass-plate", {type="item", name="tin-plate", amount=1, probability=0.8})
     util.set_main_product("sng-glass-plate", "sng-glass-plate")
-    util.set_to_founding("sng-glass-plate")
+    util.set_category("sng-glass-plate", "basic-founding")
   end
 end
 -- -- NOTE: K2 seems to reset this recipe, so moved to final fixes: