It's possible to spin identical yarns on both though the efforts needed will be different. Generally speaking: Bottom whirls are more stable but it takes more effort to keep a bottom whorl spinning and it doesn't spin as fast so it's better suited to the creation of heavier yarns. Top whirl spindles are easier to get a high rate of spin on and as such are best suited to spinning much finer singles for lace and fingering weight yarns.
There is an error in your demo, you actually DO have to change direction when flipping. Keep turning your spindle while flipping, and you will see it for yourself.
The yarn doesn't care if you swap from hi to lo whorl, its still hanging from your hand. Start spinning upside down with the spindle above your fiber supply and then what you mention comes into play. Take it from an actual handspinner with a drop spindle who has spun it both ways
What's the difference, in terms of the final outcome of the yarn, between the hi and lo whorl?
It's possible to spin identical yarns on both though the efforts needed will be different. Generally speaking:
Bottom whirls are more stable but it takes more effort to keep a bottom whorl spinning and it doesn't spin as fast so it's better suited to the creation of heavier yarns.
Top whirl spindles are easier to get a high rate of spin on and as such are best suited to spinning much finer singles for lace and fingering weight yarns.
Thank you.
What is the use of it?
There is an error in your demo, you actually DO have to change direction when flipping. Keep turning your spindle while flipping, and you will see it for yourself.
The yarn doesn't care if you swap from hi to lo whorl, its still hanging from your hand. Start spinning upside down with the spindle above your fiber supply and then what you mention comes into play. Take it from an actual handspinner with a drop spindle who has spun it both ways