7/25 -- TMZ shot footage of Scantlin leaving the police station Wednesday night. On the way out, Scantlin defended himself, "My neighbor vandalized my house so I had to take action."
He also mentioned the sledgehammer ... but was mum on the buzz saw.
Puddle of Mudd singer Wes Scantlin is behind bars in L.A. ... after allegedly vandalizing his neighbor's property WITH A BUZZ SAW ... TMZ has learned.
Law enforcement sources tell us ... Scantlin and his neighbor have been feuding for a while -- and it all came to a head this afternoon when Wes allegedly whipped out a buzz saw and went all Leatherface on the neighbor's patio.
We're told Wes also took a sledgehammer to a brick or cinder block wall -- which Wes thinks the neighbor put up on his side of the property line.
Cops arrived to the scene and arrested the 41-year-old for felony vandalism.
It's unclear what was destroyed in the alleged saw attack ... but we're assuming the neighbor was left unscathed, or Scantlin would probably be facing attempted murder charges.
Scantlin is no stranger to the law -- the "She Hates Me" singer has been arrested several times over the years for things like drugs, domestic violence and being a drunken d-bag at an airport in Texas.