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Towards a Better Pythagorean Cup

incoherency.co.uk

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Re: Towards a Better Pythagorean Cup

#11

Post by justtopost »

tejtm wrote: post #9

I wonder if the flow could be improved by smoothing the inside of the siphon tube, perhaps pumping a mild solvent through at high velocity for a little bit would streamline the interior surface. As it is each printed layer is apt to contribute some turbulence.

In automotive racing where standard porting is verboten, an abrasive slurry of a gritty putty consististancy is pumped through at pressure to smooth the transitions. I think ford even used it for a few performance manifolds. Commonly called extrude honing.

https://en.m.wikipedia.org/wiki/Abrasive_flow_machining

Re: Towards a Better Pythagorean Cup

#12

Post by walrus01 »

lozaning wrote: post #8
walrus01 wrote: post #2

For anyone thinking of buying a 3D printer, there's some pretty decent options that don't cost a ridiculous amount now... I have no financial interest in any of these manufacturers or vendors, just passing on what's been reported to be good quality by various people. At the cheaper end of the scale there is the Alfawise U30 which is $175 + $20 shipping from china: https://www.google.com/search?client=ubuntu&channel=f…

I've got a refurb Monoprice maker select mini at home I think I paid ~$100 for that prints like a champion. Brint build area is not super big, but it's large enough for what i need most of the time. No setup or fiddling with the thing for hours before your first print either which is nice.

Monoprice also sells a range of PLA filament at good prices. Nothing ever gets perfect reviews, but the consensus seems to be that it's about as good as the Amazon house brand PLA filament.

Re: Towards a Better Pythagorean Cup

#16

Post by lcuff »

adityapurwa wrote: post #15

I still don’t understand what is the purpose of having such a cup, wouldn’t it just waste the water or used to limit the amount of water? Anyone could help me, what is the usage and purpose of P cup?

I'm gonna say "for the fun of it" and "use for practical jokes" (choose your victim and context carefully!

Re: Towards a Better Pythagorean Cup

#17

Post by tejtm »

adityapurwa wrote: post #15

I still don’t understand what is the purpose of having such a cup, wouldn’t it just waste the water or used to limit the amount of water? Anyone could help me, what is the usage and purpose of P cup?

Science! pleasure can be found in something behaving in an unexpected manner.

for example, a cup that empties itself without overflowing the brim, but only if you fill it beyond a certain point.

Re: Towards a Better Pythagorean Cup

#18

Post by willchang »

adityapurwa wrote: post #15

I still don’t understand what is the purpose of having such a cup, wouldn’t it just waste the water or used to limit the amount of water? Anyone could help me, what is the usage and purpose of P cup?

Toilets work the same way! When water in the bowl rises to above the highest point in the drain, everything (hopefully) siphons out.

Re: Towards a Better Pythagorean Cup

#20

Post by andrewflnr »

adityapurwa wrote: post #15

I still don’t understand what is the purpose of having such a cup, wouldn’t it just waste the water or used to limit the amount of water? Anyone could help me, what is the usage and purpose of P cup?

It's pretty much entirely a cool trick and a joke. It was framed as a social commentary on gluttony, but I doubt that was ever the real reason for it or taken seriously in any way. It's just a cool thingy.
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