Best method for removing dust prior to topcoat?

[ian12]

Hi All

Was wondering if you guys can advise me on the best method of dust removal prior to topcoating?

I apply several base coats of a clear PU sealer then sand - the top coat is a gloss PU.

I have tried cleaning down with mineral spirits and the once dry vacuuming the surface but still get some debris. I don't have compressor so can't do that, I was wondering if tack rags would be ok to use?

Ian

[johnnparchem]

Hi All

Was wondering if you guys can advise me on the best method of dust removal prior to topcoating?

I apply several base coats of a clear PU sealer then sand - the top coat is a gloss PU.

I have tried cleaning down with mineral spirits and the once dry vacuuming the surface but still get some debris. I don't have compressor so can't do that, I was wondering if tack rags would be ok to use?

Ian

If you use a tack rag you need to make sure they are wax and silicone free or you will have trouble with the finish. I used some from wood working stores and from LMI that I had no problem with.

[tippie53]

you can make a simple tack rag with shellac. Soak a rag in shellac and place in a jar , the shellac will get tacky.
My favorite method is this
Wipe with Alcohol , then Naphtha then Mineral spirits , this helps get the dust and other contaminants off the surface. Allow to dry between wipes then seal.

[B. Howard]

I generally will dust off with a soft brush and then use a clean new rag dampened with DA taking a wipe and then folding/turning to expose a new section and take the next pass.

[Ken Hundley]

If you vacuum, use the brush attachment to dislodge the stuff in the pores. I use that or an air gun from my compressor.

[ian12]

Thanks for the replies guys - I found these http://uk.rs-online.com/web/p/multi-pur ... s/6673130/ which seem to be used in the automotive industry so will try them out.

Cheers
Ian