diff --git a/notes/3D printing/Filament.md b/notes/3D printing/Filament.md
index 2d440df..a093e0f 100644
--- a/notes/3D printing/Filament.md	
+++ b/notes/3D printing/Filament.md	
@@ -95,4 +95,18 @@ Chemically similar to ABS, just better.
 # HIPS (High Impact Polystyrene)
 Similar to ABS, but softer, waxier, and more flexible. 
 
-Has a very low density, works well for wearables and props. Hips is 
\ No newline at end of file
+Has a very low density, works well for wearables and props. HIPS is commonly used as a support material for ASA or ABS because limonene will dissolve HIPS but does not impact other plastics in the styrene family (ABS, ASA).
+
+# Nylon
+Nylon filaments are engineering filaments. They're difficult to print but have excellent mechanical properties.
+
+## Variants
+### PA-6
+| Pros                                                                                                                                     | Cons                                                                                                                                               |
+| ---------------------------------------------------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------- |
+| - Extremely strong<br>- Excellent layer bonds<br>- High flexibility<br>- Very high temp resistance<br>- Very low coefficient of friction | - Horrible to print<br>- Very high moisture retention<br>- Can't be too dry<br>- Very high warpage<br>- Requires a closed (ideally heated) chamber |
+### PA-12
+- Higher warpage than PA-6
+- Higher toughness
+- Higher temp resistance
+- Durable but brittle