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notes/3D printing/Filament.md
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@ -48,9 +48,9 @@ It has a warm waxy consistency that no adhesive will stick to.
# PETG/PET-G (Polyethylene terephthalate-glycol)
| Pros | Cons |
| ----------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------- |
| - Tougher<br>- Better temperature resistance<br>- Highly transparent<br>- Very low coefficient of friction. | - Slightly more difficult to print than PLA<br>- Struggles with overhangs<br>- Struggles with support removal<br>- High humidity absorption |
| Pros | Cons |
| -------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------------------------- |
| - Tougher<br>- Better temperature resistance<br>- Highly transparent<br>- Very low coefficient of friction.<br>- Food safe | - Slightly more difficult to print than PLA<br>- Struggles with overhangs<br>- Struggles with support removal<br>- High humidity absorption |
## Variants
### PETG-CF (Carbon Fiber PETG)
Carbon fiber stabilizes molten filament, and given that PETG struggles with overhangs, PETG-CF has massively improved print support quality, along with improved stiffness.
@ -133,9 +133,17 @@ Often called tough PETG or low temp nylon, PA-PETG is meant to serve as both a s
# 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 |
| Pros | Cons |
| --------------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------- |
| - One of the toughest, stiffest filaments<br>- Extremely high temp resistance<br>- Does not shatter<br>- Highly transparent | - 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
- Record setting stiffness, prints can withstand hundreds of kilos
- Will destroy most drive motors
- Surprisingly cheap (~60USD/kilo at the time of writing)
### 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 |