Next, buy 40-, 600- and 1,000-grit sandpaper, a sanding block, grease and wax remover, poly sheeting, painter's tape, a tack rag and a microfiber cloth.
Use a tack rag to remove particles from the unmasked area.
A Right off hand I would tend to think that your problem may be caused by the tack rag. Tack rags generally, are nothing more than pieces of cloth that have been soaked with a varnish like material.
My experience has been that there is less of an effect from tack rags if an alcohol-based stain is used.
After buffing, remove the dust with a vacuum and a tack rag
Two traditional finishing tools, tack rags
and steel wool, should not be used with water-based finishes (Photo 4).
A manufacturer of tack rags
for wovens and nonwovens, Gekatex S.A., La Chapelle d' Armentieres, France, can impregnate, cut and fold nonwovens to consumer specifications.
are good, but you need to vacuum to get a really smooth finish."