Smev sink waste

[MisterB]

I've been trying to 3d print a water tight smev sink replacement plug/filter.

I've got it pretty close but it's not completely watertight, it passes about 1mm a minute. I think that's ok for washing up (if anyone actually uses their sink and not a bowl).

It might be the neoprene O ring, the waste fitting or the 'plug' that might be the problem but I'm not sure it's worth adjusting the print as other smev sink wastes might also not be 'perfectly rounded'.

Has anyone with an original waste and plug fittings able to see if theirs actually seals completely and let me know?

Thanks

It took 22 mins to drop around 25 mm's

The plug is NOT the finished job waste, it's just a test plug for water tightness

 

[Terry]

The plastic plugs leak - rubber ones don’t. Is the plug a hard plastic ? No idea if you can print a soft ish plastic plug? Perhaps a plug that fits the hole and lips over by 5 mm all around?
Easy way to test is wrap the plug in tissue paper before plugging hole

 

[Terry]

Just remembered I have had a plug that had a silicon rubber ring about 4/5 mm down the outer edge that went inside the hole.

 

[Solwaybuggier]

We had a Smev plug on a Carthago, which we no longer own. The plastic plug broke, and we did replace it (at ridiculous cost for a piece of coated plastic.). I can't remember it leaking, either the original or the replacement, although it's entirely possible that a rate as slow as OP's replacement (1cm in 10 minutes,) I'd not have noticed. I always aim to do the washing up a lot quicker than hat!