Fibre processing and spinning always takes a long time - and it can be done with simple tools, as a rule. A Czech Centre for Traditional Technology has a very nice video on Youtube showing several steps from the dried flax plant to winding a shuttle bobbin for weaving - with a delightful mix of old and new items (watch out for the modern plastic-handled scissors!)
The video is in Czech with English subtitles, and I hope you enjoy it as much as I did.