LESSON 5.1 · 2:09 · CHAPTER 5 · WHAT'S IN THE PELLET
Carbon fibre is there to stop warp
Fibres along the bead cut the thermal strain several-fold; that, more than stiffness, is what made metre-scale printing possible.
Predict · at 0:37 in the video
A two metre wall cools 80 degrees. Neat ABS shrinks 82 millionths per degree. Carbon fibre ABS, along the bead, about 14. How much does each wall shrink?
13 millimetres against about two. Two metres times 80 degrees times 82 millionths is 13.1 millimetres. With 14, it's 2.2.
Further reading
This course is our own. These books go deeper.
- The economics of Big Area Additive Manufacturing, Post et al., Solid Freeform Fabrication Symposium, 2016
- Additively manufactured carbon fibre-reinforced composites: state of the art and perspective, van de Werken et al., Composites Part A, 2020
About the numbers
Simulations in this lesson are our own. Where a number rests on an assumption or a single source, the video marks it with an asterisk and says where it comes from.
Up next · 5.2 · 2:04Where the fibres point