diff --git a/notes/3D printing/Filament.md b/notes/3D printing/Filament.md
index 27f33b0..cf2f5dd 100644
--- a/notes/3D printing/Filament.md
+++ b/notes/3D printing/Filament.md
@@ -57,9 +57,17 @@ Carbon fiber stabilizes molten filament, and given that PETG struggles with over
The combination of matte carbon fiber with shiny polyester tends to create a very unique, aesthetically pleasing finish.
-# PCTG (Polycyclohexylenedimethylene Pthalate-glycol)
-PCTG is a newer, better, alternative to PETG.
+# PCTG (Polycyclohexylenedimethylene Pthalate-Glycol)
+PCTG is a newer, better, alternative to PETG, compared to PETG:
| Pros | Cons |
| -------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------- |
-| - Higher toughness
- Lower water retension
- Very little warping or sagging
- Almost perfect layer adhesion | - Supports are difficult to remove
- Expensive
- Not widely available |
\ No newline at end of file
+| - Higher toughness
- Lower water retension
- Very little warping or sagging
- Almost perfect layer adhesion | - Supports are difficult to remove
- Expensive
- Not widely available |
+# PET (Polyethylene Terephthalate)
+PET is the foundation of PET-G, but without the addition of glycol as a plasticizer. Compared to PETG:
+
+| Pros | Cons |
+| ---------------------------------------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------- |
+| - Stiffer
- Tougher
- Shinier
- Very high temp resistance
- Easier to print than other engineering filaments like nylon or polycarbonate | - Extremely high print temp (275C minimum)
- Struggles with humidity, overhangs, and warping |
+## Variants
+### PET-CF (Carbon Fiber PET)