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Using alcohol to clean parts.

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  • Member since
    September 2012
Using alcohol to clean parts.
Posted by Nickg on Saturday, July 17, 2021 12:57 PM

If you clean parts with alcohol, do you need to scrub them as with soap & water or just let them sit in the alcohol. I'm concerned about breaking small parts when scrubbing. 

  • Member since
    April 2020
Posted by Eaglecash867 on Saturday, July 17, 2021 1:04 PM

Just let them sit.  When I clean parts, I usually let them sit in a bath of undilluted Simple Green for an hour or two.  Then I rinse them under hot water and follow up with a quick dunk in an alcohol bath to speed up evaporation and shorten drying time.  Any time I have to do any scrubbing though (usually not necessary during a general parts cleaning) I use a cheap electric toothbrush.  That does the scrubbing in tiny, gentle movements so it doesn't break things off like manually doing the scrubbing does.

"You can have my illegal fireworks when you pry them from my cold, dead fingers...which are...over there somewhere."

  • Member since
    February 2003
  • From: East Bethel, MN
Posted by midnightprowler on Saturday, July 17, 2021 1:06 PM

I actually rarely scrub. I usually wipe them with alcohol and let them air dry.

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  • Member since
    September 2012
Posted by GMorrison on Saturday, July 17, 2021 1:37 PM

Try to find 91%. I get mine online as it's hard to find in store.

 

Bill

 Modeling is an excuse to buy books.

 

  • Member since
    September 2012
Posted by Nickg on Saturday, July 17, 2021 1:58 PM

Eaglecash867

Just let them sit.  When I clean parts, I usually let them sit in a bath of undilluted Simple Green for an hour or two.  Then I rinse them under hot water and follow up with a quick dunk in an alcohol bath to speed up evaporation and shorten drying time.  Any time I have to do any scrubbing though (usually not necessary during a general parts cleaning) I use a cheap electric toothbrush.  That does the scrubbing in tiny, gentle movements so it doesn't break things off like manually doing the scrubbing does.

 

Thanks for the explanation. Much appreciated. 

  • Member since
    September 2012
Posted by Nickg on Saturday, July 17, 2021 1:59 PM

GMorrison

Try to find 91%. I get mine online as it's hard to find in store.

 

Bill

 

will do, thanks. 

  • Member since
    March 2014
Posted by BarrettDuke on Saturday, July 17, 2021 4:58 PM

Just soaking them in 91% alcohol does not guarantee you get all the film off. Of course, that's better than nothing. It's best to use a lint free cloth with alcohol as much as possible. Of course, you can't do that with all parts. But the parts where you're most likely to have problems are the larger parts that are more likely to be handled often after painting and that have smooth surfaces that don't help with adhesion. Barrett

  • Member since
    November 2018
Posted by oldermodelguy on Saturday, July 17, 2021 5:01 PM

I was using alcohol for a while but switched back to odorless mineral spirits. I just soak a tissue and wipe things down. Follow up with dry tissues and just use an empty airbrush to blow off any lint. I use Stynylrez primer and noticed with alcohol a funny pattern in the finish of the first coat of primer, almost a motor oil on water look. It still worked but I didn't like that and don't see it with the ms wash.

You need detergent and the like for resin imo.

  • Member since
    January 2017
  • From: Colorado Springs
Posted by mawright20 on Saturday, July 17, 2021 5:02 PM
Try Walgreens for 91%
  • Member since
    April 2020
Posted by Eaglecash867 on Saturday, July 17, 2021 5:29 PM

I use 99% aviation grade isopropyl alcohol.  One of the advantages of working at an airport with an aviation supply warehouse close by.  Cool

"You can have my illegal fireworks when you pry them from my cold, dead fingers...which are...over there somewhere."

  • Member since
    March 2013
Posted by patrick206 on Saturday, July 17, 2021 5:36 PM

Nickg

If you clean parts with alcohol, do you need to scrub them as with soap & water or just let them sit in the alcohol. I'm concerned about breaking small parts when scrubbing. 

 


  • Member since
    April 2020
Posted by Eaglecash867 on Saturday, July 17, 2021 5:52 PM

I could be wrong, but I think the OP was talking about cleaning model parts, not airbrush parts.  Cleaning model parts with lacquer thinner would be bad.  Wink

"You can have my illegal fireworks when you pry them from my cold, dead fingers...which are...over there somewhere."

  • Member since
    March 2013
Posted by patrick206 on Saturday, July 17, 2021 8:00 PM

Eaglecash867

I could be wrong, but I think the OP was talking about cleaning model parts, not airbrush parts.  Cleaning model parts with lacquer thinner would be bad.  Wink

 

Hey, Eagle - Nope, you're not wrong, I guess I had airbrush on my mind. Disregard all.

  • Member since
    November 2008
  • From: Central Florida
Posted by plasticjunkie on Sunday, July 18, 2021 7:18 AM

I have been modeling since the early 1970s and have NEVER washed any model parts at all. The exception is when using resin parts then I wash them in Dawn and air dry them. Never had issues with paint adhesion except when I used Acryl primer which is junk and will peel when masking tape is removed.

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Too many models to build, not enough time in a lifetime!!

  • Member since
    March 2003
  • From: Western North Carolina
Posted by Tojo72 on Sunday, July 18, 2021 7:38 AM

plasticjunkie

I have been modeling since the early 1970s and have NEVER washed any model parts at all. The exception is when using resin parts then I wash them in Dawn and air dry them. Never had issues with paint adhesion except when I used Acryl primer which is junk and will peel when masking tape is removed.

 

Ditto what film ? Maybe on some old eastern European kits which I have heard but never seen,an unnecessary step in my modeling.

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