Have made some from acrylic tube:
Even creates a vortex:
It's really not as hard as you'd think. Here's the explanation in my journal: http://ukaps.org/forum/viewtopic.php?f= ... 04#p171604
Even creates a vortex:
It's really not as hard as you'd think. Here's the explanation in my journal: http://ukaps.org/forum/viewtopic.php?f= ... 04#p171604
