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<< Lancair Builders' Mail List >>
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I sold petrochemicals for several oil companies a long time ago. I called
on a variety of manufacturing operations from fiberglass boat mfgs to
automobile assy plants and specialty chemical formulators who blended a
variety of solvents we sold them for applications such as degreasing,
cleaning wax out of molds, etc..
Methylene Chloride (M/C) is the Gold Standard for cleaning wax and oils,
non-flamable. Downside--Toxic to breathe and is easily absorbed thru the
skin. Take small parts outdoors, if practical, to clean them. Put a couple
of box fans blowing in and out of your work area and or a shop vac vented to
the outside and let them run for a while. A Hobbyair type fresh air
respirator system would be best.
Acetone is a good dewaxer, bad degreaser. Downside--VERY Flamable,
probably worse than gasoline, not as toxic as M/C or MEK.
MEK, very good dewaxer, fair degreaser. Downside--VERY Flamable and toxic.
Blended Cleaners--The objective can be less volitility to hold a wet surface
longer, less flamability, less toxicity, EPA compliance or the leading
reason, lower cost.
This is like so many decisions we must make, it's a compromise. I like
clean parts and I bought the gloves, force vent my shop, put all M/C towels
outside asap and just hold my breath while cleaning.
I have not heard of any delaminations due to contaminated parts, so maybe
its just a question of clean enough. We cleaned with Acetone at the Legacy
workshop and I feel fine about the rather critical bonds we made. I sure
would not want to spill some Acetone or MEK near a pilot light or an
unshielded electric motor tho...
Steve Colwell Legacy 2K Placerville,CA (530) 621-3408
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LML website: http://www.olsusa.com/mkaye/maillist.html
LML Builders' Bookstore: http://www.buildersbooks.com/lancair
Please send your photos and drawings to marvkaye@olsusa.com.
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