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03-04-2009, 05:50 PM
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Join Date: Apr 2008
Location: Indianapolis, IN
Posts: 1,069
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Did you know
...that acetone will eat through a styrofoam in about 2 seconds...
it also cleans up the floor nicely too.
__________________
Ryan Allen, CFII
RV7 N612RA, flying since july 2012
E-170/175
RV10 Tail Kit complete, Wings 90%, fuse on order
Acro Sport 2, building
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03-04-2009, 06:24 PM
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Join Date: Sep 2007
Location: Albuquerque, NM
Posts: 659
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Yup  It works well for lost foam casting. I believe the acetone is safe to use on fiberglass, so you can make a foam blank of a part (air scoop, etc), glass over it, then use acetone to eat out the blank.
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Andy Compton, PhD EE
RV-10 - #41414 (building)
RV-9A - N643AC (built,flying,sold,missed)
My blood and sweat, the Wifey's tears 
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03-04-2009, 06:36 PM
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Join Date: Apr 2008
Location: Indianapolis, IN
Posts: 1,069
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ah...good to know. I am working on fiberglass right now too....slowly, very slowly.
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Ryan Allen, CFII
RV7 N612RA, flying since july 2012
E-170/175
RV10 Tail Kit complete, Wings 90%, fuse on order
Acro Sport 2, building
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03-04-2009, 07:01 PM
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Join Date: Apr 2008
Location: Catawba, NC
Posts: 193
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gasoline
gas works equally as well, allbeit slower.
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mangling aluminum since May 2009
RV7-A, flying
RV8 under construction
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03-04-2009, 07:32 PM
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VAF Moderator / Line Boy
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Join Date: Jan 2005
Location: Dayton, NV
Posts: 12,247
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Quote:
Originally Posted by engineerorange
gas works equally as well, allbeit slower.
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And gives a MUCH more satisfying "boom" when things go wrong....  
Paul (semi-retired firefighter)
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Paul F. Dye
Editor at Large - KITPLANES Magazine
RV-8 - N188PD - "Valkyrie"
RV-6 (By Marriage) - N164MS - "Mikey"
RV-3B - N13PL - "Tsamsiyu"
A&P, EAA Tech Counselor/Flight Advisor
Dayton Valley Airpark (A34)
http://Ironflight.com
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03-05-2009, 08:53 AM
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Join Date: Aug 2005
Location: Pasadena CA
Posts: 2,484
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Depending on the foam... yeah that sucks. Hotwire safe foam isn't poison, it just smells really bad.
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Stephen Samuelian, CFII, A&P IA, CTO
RV4 wing in Jig @ KPOC
RV7 emp built
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03-05-2009, 09:09 AM
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Join Date: Jan 2005
Location: 57AZ - NW Tucson area
Posts: 10,011
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Not the case for Styrofoam...
Quote:
Originally Posted by VETE76
hope NOBODY is breathing the gases let off from "melting" the foam.
especially if you are dumb enough to use a torch! cyanied
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...which started off this thread.
As always, the MSDS is a good guideline....
HAZARDOUS COMBUSTION PRODUCTS: Under fire conditions polymers decompose. The smoke may contain polymer fragments of varying compositions in addition to unidentified toxic and/or irritating compounds. In smoldering or flaming conditions, carbon monoxide, carbon dioxide and carbon are generated. Hazardous combustion products may include, and are not I limited to, hydrogen fluoride, hydrogen chloride and hydrogen bromide. Studies have shown that the products of combustion of this foam are not more acutely toxic than the products of combustion of common building materials such as wood.
..and can be read here...
http://engineering.union.edu/~rapoff...oam%20MSDS.pdf
No cyanide here... are you thinking about urethane foams?
__________________
Gil Alexander
EAA Technical Counselor, Airframe Mechanic
Half completed RV-10 QB purchased
RV-6A N61GX - finally flying
Grumman Tiger N12GA - flying
La Cholla Airpark (57AZ) Tucson AZ
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