LESSON 9.2 · 1:44 · CHAPTER 9 · TOOLS, RECYCLING AND WHAT'S NEXT
Printed walls leak
Connected voids between beads leak under vacuum, so the tool face gets a sealed skin before it is machined.
Predict · at 0:30 in the video
A 13 metre wind blade mould was printed four millimetres under the mould line, coated with eight millimetres of fibreglass, then machined back to the line. How much fibreglass forms the face?
About four millimetres. Eight millimetres on, four machined back. The face is laminate.
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 · 9.3 · 1:43Print it solid and the advantage evaporates