New Member - Squealling from front o/s wheel

[Ruairi]

Hello all. New member here. I have a very loud metallic squeal coming from front o/side wheel. Have stripped down brake caliper and all seems well with pads, calipervand disc. Has anyone else had a similar issue? Any help well appreciated. Thank you

 

[White16valver]

Have you put it back together and it's still doing it?

I was going to suggest a stone stuck between the pads and the disc, or sticky pistons and noisy, race pads.