Can ABS withstand being submerged underwater 24/7?

[curious aardvark]

openscad funnel script makes funnels with 2mm thick wall.

$fn=100;
difference() { //creates the wide top of the funnel
cylinder(d1=50,d2=12,h=40);
cylinder(d1=46,d2=8,h=40);
} // end difference

difference(){ //creates the spout
translate ([0,0,40]) cylinder(d1=12,d2=12, h=30);
translate ([0,0,40]) cylinder(d1=8,d2=8, h=30);
} // end difference

That's it :-)
change the cylinder diameters, heights, wall thicknesses and translates for variables and that one script will generate any size funnel you like. I can't be arsed to do it now :-)
Change the d2's in the spout section to get a tapered spout. Don't forget to change the internal diameter as well :-)

funnel will print the way up it's generated, with a 2mm wall you can make a pretty steep sided funnel.

[curious aardvark]

wow talk about paranoid:

Another issue would be the dangers from extruder nozzles. If the nozzle is made of brass, then lead might leach into the print.

Seriously ?

[Mjolinor]

wow talk about paranoid:

Seriously ?

I doubt it. Well I can't see how you would get lead from copper and zinc but he ho.

Obviously a witch, may we burn her?

[Ama-fessional Molder]

It's certainly true. There is special waste handling requirements when dealing with coolants/cutting oils from shops that machine brass.

I doubt it would be significant from a 3d printer nozzle.

[NaotoSakaue]

I hesitate to write about this. I do not intend to blow my own trumpet.
As someone wrote previously, PP is the best material for your purpose. But PP filament has the issue, big CTE. We, NANODAX , has announced glass wool filled PP filament which is really usable.

• Surface is very smooth.
• Easy to cut, shave the model.
• Has flexibility and strength.
• Water tight wall.
• Light.
• No odor during process.
• Endure 120-130 degree.
• Chemical resistance
• Parameter tolerance is large

This link to Z-temp forum is good to understand how it behave.
The filament is going to be put into market end of SEP if everything goes well.

[ralphzoontjens]

ABS will work, it's water resistant and very durable.

Nylon is made by a condensing reaction, that is a water molecule is split off to join two monomers together to form an amide bond. With the help of a water molecule that reaction can be reversed to split in into the monomers again.

I have also seen this with parts printed at Shapeways in nylon - in water they swell up and deform over time.
Practically, do you know how much the nylon will degrade and over what timespan?

[Alibert]

Practically, do you know how much the nylon will degrade and over what timespan?

There is no simple answer to that, but there are ample papers to be found on the subject under differing conditions. Just google 'nylon degradation' or 'polyamide degradation'.

[Alibert]

We, NANODAX , has announced glass wool filled PP filament which is really usable

The filament is going to be put into market end of SEP if everything goes well.

How high temperature can the printed parts withstand? I am looking for a solvent-resistant filament that can withstand at least 130 C (preferably up to 140-160 C).....

[curious aardvark]

http://3dprintboard.com/showthread.p...t-Free-samples!

check that out alibert.
very very expensive, but claims to do waht you want.