Superceeded: https://www.thingiverse.com/thing:4241654

Very similar to the previous 90° Ø22mm pipe bend, except this is built "More Vertically".

I'm concerned people may confuse these for 135° bends, well, they're not.

Ok, I've not seen anyone do plumbing or pipework of practical use, so I'm claiming this as the modestly named Southern Method. Using a single material home printer and Printing the pipes at 45° WITHOUT SUPPORT MATERIAL to print bed allows finished pipe profiles to be round rather than "teardrops" shapes to prevent the materials collapsing in on itself at the top.

First rule of plumbing club, you don't mess with systems you don't understand.
Second rule of plumbing club, YOU DON'T MESS WITH SYSTEMS YOU DON'T UNDERSTAND(!)
Every modification will take as long as it takes.
1 system per mod,
If this is your first night at Plumbing Club, you've got to plumb.

This is intended for low pressure return pipes for grey water at approximately room temperature. Do not use on Gas (Propane, LPG, Butane, Domestic Gas supplies, or any combustable media). Do not use on hot water or central heating systems (temp >40°C ; If you do not understand what ">" or "°C" means, don't use this part!). Do not use on macerated sewage. Do not use in temps close to 0°C. Do not use under floorboards or similar situations where it cannot be seen, monitored or changed easily. This design is not suitable for use in Nuclear Power Stations or Satellite Applications.

Basically, use this sensibly. I've used similar in hydroponics, and it works at low pressure (102KPa / 1ATM - if you don't know what a KPa is, or what 1 ATM is, please don't use this design).

I'm saying "Grey Water Systems Only" - but that's an ass covering statement, if you feel your build is safe enough to use on other systems, I'm not your keeper. I'm just an idiot.

This is based on previous design
http://www.thingiverse.com/thing:639743
http://www.thingiverse.com/thing:650329
http://www.thingiverse.com/thing:653890

Similar technique used in:
Nescafe Nesspresso Espresso Milk Nozzle
http://www.thingiverse.com/thing:649314

(Kudos to similar looking for similar objects:
I like Cyber Betty's Oil Top: http://www.thingiverse.com/thing:650166)

I'd prefer "No Remixes" but suit yourself, I'm not your boss. If you do remix though, you absolutely must use the phrase of the day "Southern's Support-free Pipework Method".

And is intended as a separate development (i.e. doesn't quite supercede the previous design). More to come.

I hope you try and enjoy this.

If there are previous examples of this method being used, please let me know so I can tone down my ego.

THIS HAS NOT BEEN TESTED FOR WATER TIGHTNESS YET. -SOON. That's what the tear holes are for, so I can dangle above a vat of boiling Acetone.

Cheers,

-Andy.