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notes/3D printing/Filament.md

@@ -71,3 +71,20 @@ PET is the foundation of PET-G, but without the addition of glycol as a plastici
 | - Stiffer<br>- Tougher<br>- Shinier<br>- Very high temp resistance<br>- Easier to print than other engineering filaments like nylon or polycarbonate | - Extremely high print temp (275C minimum)<br>- Struggles with humidity, overhangs, and warping |
 ## Variants
 ### PET-CF (Carbon Fiber PET)
+- Almost as easy to print as PETG
+- Extremely stiff
+- Hard to find, expensive
+
+# PVB (Polyvinyl Butyrate)
+- Printing qualities similar to PLA
+- Behaves similar to PETG, weaker but more flexible
+- When exposed to isopropanol alcohol, the layers melt and fuse together, resulting in a very glossy, seamless finish.
+
+# ABS (Acrylonitrile Butadiene Styrene)
+- Very common in consumer injection-molded parts.
+
+
+
+| Pros                                                                               | Cons |
+| ---------------------------------------------------------------------------------- | ---- |
+| - Melts in acetone, acetone vapor smoothing can be used to improve surface finish. |      |