I have a pop up waste (controlled as usual by a rod) on a bathroom basin that I was hoping to change to a sprung waste, cos the pop up thingie no longer works.
BUT having removed the rod and basin trap I find that there is no obvious way of unscrewing the basin waste.
Basically there is a screw thread that the trap attaches to, but nothing but a smooth piece of metal from there into the basin. Nothing to attach a wrench to or that it could grip.
Looks fairly typical. It has an internal screw thread at the top. The Chrome surround to the existing plug hole, is attached to a tube that passes through the hole in the basin, and screws into the bit in your photo. You basically need to unscrew the two bits.
This can either be done by stuffing something into the plug hole to engage with any notch or cutout in it (there is normally a hole in it to allow the water from the overflow to pass into the waste) and using that to stop the plug hole from spinning. Then grab the bit under the sing and unscrew. Or try the reverse - spinning the plug hole out of the bottom bit. I find that one jaw of a pair of water pump pliers will often reach into the plug hole enough to engage with something in the plug hole tube.
Note its common to use sealant / putty / boss white etc on the underside of the basin to make a good seal - so that can make it harder to free the bottom tube without loosening the top bit a bit first.
If it was originally a pop up waste, there is presumably a flange sticking out of the side we can't see in the photo that the rod used to enter via. That usually makes it much easier to get a grip on it.
(not sure your typical adjustable basin wrench would grip it though - they don't usually open wide enough - you may be able to get a larger type though that would)
I have only 6 cookies from photobucket, all are session cookies so will disappear whenever I close firefox, perhaps there are more if you don't block 3rd party cookies.
I didn't mean that, which is on the chrome part, but around that. I'm seeing what seems to be a white plastic ring, with what appear to be lugs for the installer's fingers to grip. I suspect it might be tight due to age since installation. Maybe try tapping that around with a flat screwdriver via one of the lugs?
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