diff --git a/notes/3D printing/Filament.md b/notes/3D printing/Filament.md
index 16a8156..9e1ce21 100644
--- a/notes/3D printing/Filament.md	
+++ b/notes/3D printing/Filament.md	
@@ -141,9 +141,18 @@ Often called tough PETG or low temp nylon, PA-PETG is meant to serve as both a s
 - Record setting stiffness, prints can withstand hundreds of kilos
 - Will destroy most drive motors
 - Surprisingly cheap (~60USD/kilo at the time of writing)
+  
+### PC-PBT (PBT Infused Polycarbonate)
+PBT flaccifies the polycarbonate but preserves PC's strength and shatter resistance in the cold, making it one of the few cold-resistant filaments. 
+- Lower print temp
+- Improved print quality
+- Very low warping
+- One of the easiest filaments to print in
+  
 ### PMMA (Polymethylmethacrylate)
 Also known as acrylic plexiglass, the high transparency of PMMA is the only advantage it has over other polycarbonates for printing.
 
 | Pros                                                                                                                                         | Cons                                                                                                                                                                                                          |
 | -------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
 | - Highest transparency thermoplastic<br>- Can be buffed to a frosted/polished surface<br>- High UV resistance<br>- Relatively affordable<br> | - Horrible bed adhesion<br>- Bad layer adhesion<br>- High coefficient of thermal expansion leads to constant print failures during or after the printing process<br>- Very brittle<br>- High water absorption |
+# TPU (Thermoplastic Polyurethane)