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Building Tips and technical articles. => Paint and finishing => Topic started by: Joe Ed Pederson on September 30, 2019, 07:05:15 PM

Title: Substitute for Dupont Final Klean 3901S?
Post by: Joe Ed Pederson on September 30, 2019, 07:05:15 PM

In the "Finishing and Painting Your Airplane" pamphlet from Brodak they suggest wiping down the model between coats with Dupont Final Klean 3901S.  I searched the web and discovered that Final Klean 3901S goes for roughly $75.00 a gallon.  I haven't been able to locate the cleaner Windy calls for in his finishing tapes, Sikkens M600, but I'm guessing that if it is still available it would cost about the same.

Can anyone recommend a reasonably priced product to use between coats of dope to degrease and remove dirt and dust?


Thanks,
Joe Ed Pederson
Cuba, MO

Title: Re: Substitute for Dupont Final Klean 3901S?
Post by: Randy Powell on October 01, 2019, 04:34:49 PM

Most naphtha based products will work. Be careful and don't press down too much. Single stage urethanes are sensitive to it, but lacquers and enamels or 2 part poly-urethanes are fine.

You can also check this out: https://www.autobody101.com/content/articles/surface-cleaners/

Title: Re: Substitute for Dupont Final Klean 3901S?
Post by: Dan McEntee on October 01, 2019, 04:38:34 PM

  Do they still sell Prepsol?  I think that's what it was called? Head to your nearest auto paint supply store and see what they have.
  Type at you later,
  Dan McEntee

Title: Re: Substitute for Dupont Final Klean 3901S?
Post by: Joe Ed Pederson on October 01, 2019, 06:11:24 PM

Thanks, guys.

Randy, I just read that website you had in your post.   It was very helpful.

Joe Ed

Title: Re: Substitute for Dupont Final Klean 3901S?
Post by: Randy Powell on October 02, 2019, 02:24:39 PM

Yea, I bookmarked when I first read it. Lots of good info in there.

Good Luck.

Title: Re: Substitute for Dupont Final Klean 3901S?
Post by: Mike Haverly on October 03, 2019, 09:52:25 AM

I use Naphtha purchased from Lowes.  Never had a problem, even on polyurethane.  Best to use nitryl gloves, apply with a paper towel and dry with a fresh paper towel.  Wear nitryl gloves, it will dry your skin.  Works well on slimer airplanes for removing nasty oil residue as well >:D, in that case re-waxing is in order.