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What grade of Isoproyl Alcohol ?
Kevlar06
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Washington, United States
Member Since: March 15, 2009
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Posted: Tuesday, February 11, 2020 - 06:33 AM UTC

Quoted Text

When in doubt use the thinner made by the paint manufacturers. Save the alcohol for cleanup.



This is good advice. Next time you get a chance, read the ingredients on Tamiya “yellow cap” thinner on the side of the bottle. There’s no drug store alcohol anywhere in there. I seldom have problems when I mix paint with proprietary thinners, it’s when I deviate that problems inevitably arise. For cleaning my AB, I buy a gallon of lacquer thinner from my local HD or Lowe’s for about $10 and it lasts me a long, long time.
VR, Russ
Lakota
#123
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New Mexico, United States
Member Since: November 17, 2008
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Posted: Tuesday, February 11, 2020 - 12:47 AM UTC

Quoted Text

When in doubt use the thinner made by the paint manufacturers. Save the alcohol for cleanup.


I agree, for years I used one brand of acrylic thinner or alcohol from the grocery/drug store. I switched and started matching the brand of thinner to the brand of paint and never had a problem after that. Alcohol for clean up is great.
Take care,
Don "Lakota"
Scarred
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Washington, United States
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Posted: Monday, February 10, 2020 - 03:13 PM UTC
When in doubt use the thinner made by the paint manufacturers. Save the alcohol for cleanup.
kevinekstrom
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Illinois, United States
Member Since: December 08, 2017
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Posted: Monday, February 10, 2020 - 02:09 PM UTC
I have nothing but problems with pebbling effect when using anything over 90%. The alcohol evaporates much too quickly unless you cut it with something causing the paint to pebble. I strongly suggest the weakest percentage you can find. That's just my 2 cents, other may have good luck with the 90 stuff, but I never have.
Wingtsun
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British Columbia, Canada
Member Since: July 16, 2006
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Posted: Wednesday, December 05, 2018 - 02:21 PM UTC
Thanks everyone
SSGToms
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Connecticut, United States
Member Since: April 02, 2005
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Posted: Monday, December 03, 2018 - 02:45 PM UTC
I use 91% from Wal-Mart or the drug store.
MLD
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Vermont, United States
Member Since: July 21, 2002
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Posted: Sunday, December 02, 2018 - 02:50 PM UTC

Quoted Text

What strength of isopropyl acohol should I use for thinning acrylic paint? 99 percent or 70 percent ?



I have been running 70% drug store stuff through airbrushes with Tamiya, Poly Scale (back in the old old days), Model Master Acryl, and Gunze for 25+yrs and had no troubles.
Dragon164
#226
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British Columbia, Canada
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Posted: Sunday, December 02, 2018 - 02:24 PM UTC
90 to 99%

Cheers Rob.
Pave-Hawk
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Western Australia, Australia
Member Since: May 05, 2006
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Posted: Sunday, December 02, 2018 - 12:53 PM UTC
I use 99% as that's what I can get cheaply at an electronics store.
brekinapez
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Georgia, United States
Member Since: July 26, 2013
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Posted: Sunday, December 02, 2018 - 12:42 PM UTC
91% is the strongest I've seen and it is what I buy.
Wingtsun
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British Columbia, Canada
Member Since: July 16, 2006
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Posted: Sunday, December 02, 2018 - 12:03 PM UTC
What strength of isopropyl acohol should I use for thinning acrylic paint? 99 percent or 70 percent ?