diff --git a/notes/3D printing/Filament.md b/notes/3D printing/Filament.md
index 1c5a882..c78d950 100644
--- a/notes/3D printing/Filament.md	
+++ b/notes/3D printing/Filament.md	
@@ -126,4 +126,16 @@ Nylon filaments are engineering filaments. They're difficult to print but have e
 - Durable enough to act as a viable alternative to machined aluminum
 
 ### PA-PETG (Nylon PET alloy)
-Often called tough PETG or low temp nylon, PA-PETG is meant to serve as bo
\ No newline at end of file
+Often called tough PETG or low temp nylon, PA-PETG is meant to serve as both a step up from PETG and a more accessible nylon alternative.
+- Bad warping, poor bed adhesion
+- Often just better to use nylon *or* PETG
+
+# Polycarbonate (PC)
+- In the real world, polycarbonate is used to make bulletproof glass. While FDM polycarbonate is not bulletproof, many of the properties of polycarbonate still apply. 
+
+| Pros                                                                                                | Cons                                                                               |
+| --------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------- |
+| - One of the toughest, stiffest filaments<br>- Extremely high temp resistance<br>- Does not shatter | - Extremely high moisture retention<br>- Prints above 300C<br>- Difficult to print |
+## Variants
+### PC-CF (Carbon Fiber Polycarbonate)
+- Record setting stiffness, prints can withstand hundreds of kilos
\ No newline at end of file