INSANE Performance From This 3D Printed Centrifugal Water Pump - CLOSED IMPELLER 

i chuckled each time!

Rigid flange coupling: the dungeon master

IN A WORLD where everybody's 3D printed water pumps have leaks, ONE MAN has the solution, RIGID FLARE COUPLING

FINISH HIM!

Hahaha I heard "Ric Flair Coupling"

As my colleague said: "You don't neccessarily need to be the best rc-pilot to design best rc-models".

I think "my new design destroyed my test setup" is certainly a great example of the meme "Task Failed Successfully." Love this video!

Everyone starts somewhere. Think about the rigs this guy is going to be operating when he's in his 40's.

And usually lower overall wear/work better as high speed bearings too!

should be easy to find as well. they are common in pool pumps

@@HDDRecovery can find them on ebay pretty easily.

i can find them broken at my workplace. i must have over 50 ceramic ball bearings in a bag that i picked up from the floor at work. we only spin them at 10 rpm but any debris and they bind up and blow up. its a common consumable there. i dont know how many maintenance has to replace monthly but its never zero.

@@darkshadowsx5949 well being that these will constantly be washes by the water in the pump, i doubt debris would be a problem, just make sure to remove the seal on the inner side

This blew my mind. Graphite makes absolute sense considering the shear strength of the atomized carbon is actually going to be significantly higher than in any oil. I've never thought of using graphite for high pressure, high speed application, but with this explanation and the knowledge we have of "graphene" it makes a TON of sense. I wonder if using a material that not only was dense, like ceramic, but also repellent to carbon in chemistry could improve wear. The simple solution of graphite seems almost unbeatable though.

@sourand jaded carbon mechanical seal faces can get particulate embedded in them and will cut and ruin the stationary face they run against.

@@SpadeNya carbon is used for its self lubricating properties. A carbon rotary running against a silicon carbide stationary is the coolest running face combination. Alumina ceramic like mentioned in the above comment is a poor conductor of heat and will create a condition called heat checking if not kept cool. Other materials used for faces are antimony carbon, sintered and reaction bonded silicon carbide, tungsten carbide, PTFE, and in some cases chrome oxide plating. Most smaller pumps with shaft diameters below 1.500" use cheap throw away seals from the factory which are around 300 dollars. Larger pumps will use more expensive cartridge mechanical seals that can be rebuilt and can range anywhere from $1,000-$50,000 depending on size, metallurgy and elastomers used for a particular application. Sorry for the wall of text, I have a lot of experience with process pumps and rotational shaft sealing and couldn't help myself. Lol

I've printed a few gaskets with TPU, and I found normal 95A TPU to be a bit too hard. Probably the much softer filaments, 70A and softer, would be better for water sealing, but I've heard they're difficult to print.

@@DisorderedArray i print gaskets with Ninja flex (TPE) 85A. works perfect. printing them 1mm thick

@@BlueEyesRageTv good info. Is that on a boden or direct drive?

TPU is a flexible plastic but not a soft material. Image a TPU fleshlight ! impossible..

@@DisorderedArray Direct drive. Can work with bode if you print super slow and no retraction. It is much much easier to print flexible if you use 0.6 nozzle or bigger. I use 0.6 and it's perfect. I can print with 0.4 to but then i need to print slower.

We need beer Dan

@@kanal685 We all do mate, 1 pallet has been sent out to you and should arrive shortly.

Or with pressurized water

Nice

(The impeller to housing tollerance will be great)

I disagree because it entirely depends on the application. some pumps are made for static pressure, some are made for flow rate, and some are designed for a combination of the two. Saying "volume will always be second priority" is a glaringly shortsighted perspective on pump design.

Alternatively you can use a solder iron to stitch the gap by dragging material from both sides!