I am getting ready to finish the "Big Desk" for LOML, I am planning on using General Finishes Polyacrylic as the finish and the manager at my local woodcraft cuutioned me against using any metalic steel woll between coats. I stopped by the local Borg to pick up some synthetic but they don't carry it. I did pick up some of the 3M sanding sponges at 400 Grit. Has anyone used this on this type of application. This is my first time using a water based clear finish so I'm sailing in uncharted waters for me.