Scrubbing the front and back surfaces of the workpiece with a PVA sponge effectively removes dirt adhering to the workpiece.
Depending on the dirt properties of the workpiece, you can choose a PVA sponge with or without warts.
By supplying the cleaning solution from the inside of the sponge, the accumulation of dirt on the sponge can be prevented.
Ideal for cleaning thin workpieces.