Bathroom Sink

I am not a fan of plumbing and feel like I make things worse more often than not.  However, I have had decent luck with sinks.

For the past few months, the hot water pressure has been decreasing to the point that it is annoying.  

There is a copper pipe with a screw valve to open and close the water.  I disconnected the connector and had good water pressure.  This was not the problem.

There is a faucet handle at the top of the pipe.  I disconnected this, and expected water to be flying everywhere, but it wasn't.  The problem was somewhere in between.

I removed the connector and scraped out crud on the ends.  I turned on the water and it had good pressure to the end that connects to the faucet.

At the faucet end of the connector, there was a metal screen which I scraped clean and then all of a sudden I had good water pressure.

Something must have been obstructing the flow, but I did not definitively pull out a glob of anything.  I am just happy to have good water pressure again.

UPDATE:  12/6/2024 - We were having water pressure issues again and I troubleshot the whole system again.  In the future.  Disconnect connecting hose from copper pipe that is connected to the basin.  Scrape the wire mesh shield.  Reconnect the connecting hose.  DO NOT NEED TO DISCONNECT CONNECTING HOSE AT BASE SHUT-OFF OR TAKE APART THE FAUCET HANDLE.