Can ABS withstand being submerged underwater 24/7?

[Mjolinor]

lol one of the things I print quite a lot of are funnels.
Being able to make them exactly the size you want is really useful. Plus they print pretty quickly and are a really short openscad script.

Even the ones I made 2.5 years ago that are in regular use, are absolutely fine.

Got a pla one in my car I use to fill my windscreen washer bottle. been using it for a couple of years. No signs of wear or degradation. It just gets shaken and put back in car - I don't dry it.

Hell I even made a special nozzle for piping bags to make filling profiteroles much easier.
Funnels are great things to make :-)

But I don't tend to use then for solvents. water, not an issue.

Post the script, save me the work.

[Ama-fessional Molder]

If you want excellent chemical resistance use this:


https://www.amazon.com/Gizmo-Dorks-P...ylene+filament


You're probably not going to have a very good time with it though, if my experience with the material holds true.


I don't understand the cost though, probably a supply and demand issue. PP is a commodity resin.

[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?

[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.

[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.

[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'.

[curious aardvark]

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

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