[s-cars] Devon FTW

JC jc at j2c3.com
Wed Sep 8 22:49:05 PDT 2010


Not really a great idea in my book to use Brake Cleaner (or Carb Cleaner for
that matter) as a general purpose solvent & cleaner.

First of all until/unless you dig out the MSDS you never know whats in
them... xylene, toluene, naphtha, MEK, cyclohexane...etc. etc. all kinds of
stuff ends up in them... Easily things that can melt different kinds of
plastics.  Let alone things like tetrachloroethylene which can turn into
phosgene gas under shielded-gas welding environments and kill you in short
order.  I prefer to keep a stack of 'pure' solvents on the shelf and try to
determine what's called for in each situation, vs. the ol'  "jes hose that
beyotch down with carb / brake cleaner!" approach where you may not even
know what the heck your spraying on there since each of those is just some
companies "solvent-soup" recipe.

So to the issue at hand... if you used brake cleaner it could easily have
softened the plastic and ruined it. Depending on the materials involved,
plastic soaked in a "bad" solvent can easily become unsalvageable. For
instance if that trim piece is ABS, and your brake cleaner had MEK or
Toluene or Benzene (very likely) in it, it might have softened or weakened
the plastic semi-permanently... If it's gone soft and sags over time, it's
likely time to start over with a new part...

Ideally the back of the molded part indicates what its made of (ABS / PP /
PET) and then you can jump on Teh Interwebz and go to any of several good
compatibility charts to see what is OK or not OK. Example:
http://www.camlab.co.uk/sitefiles/RTP_instructions/Plasticomp.pdf

>
> Hey Rob
> Iscratched up both surfaces and used some brake cleaner to
> make sure they were clean. Let it dry/cure for ~18


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