4 ms·
You're right :) It finished printing and works as it should, but it takes an extremely long time to drain. tobr suggested an alternative design elsewhere in t
by jstanley 8y ago
You're right :)
It finished printing and works as it should, but it takes an extremely long time to drain.
tobr suggested an alternative design elsewhere in this thread: https://i.postimg.cc/FR7Qc9M5/0845194-D-F5-DE-46-D6-8200-CB9-F8-ABDA332.jpg https://i.postimg.cc/FR7Qc9M5/0845194-D-F5-DE-46-D6-8200-CB9... - I think it would be easier to conceal a larger tube within that, so I might have to try that too.
- mrfusion 8y agoCould you share the file with me if you end up doing that other design? I’d love to try it out too.
- jstanley 8y agoHere you go: https://incoherency.co.uk/interest/pythagoreancup2.stl https://incoherency.co.uk/interest/pythagoreancup2.stl And a 50% opacity view: https://img.jes.xxx/2005 https://img.jes.xxx/2005 The first cup took 90 seconds to drain about 200ml. The cross-sectional area of the tube in the second version is about 4.7x larger, so if my beginner-level understanding of Bernoulli's principle is accurate, I expect it to drain about 4.7x faster, so maybe it'll empty itself in 20 seconds instead of 90.
- jstanley 8y agoThis one drains in 12 seconds, but only contains 150ml due to the reduction of the inner diameter at the bottom. The average flow rate is 12.5 ml/sec vs 2.2 ml/sec before, so it's 5.6x better!