SEARCH FINESCALE.COM

Enter keywords or a search phrase below:

Ungluing Parts

22262 views
19 replies
1 rating 2 rating 3 rating 4 rating 5 rating
  • Member since
    April 2003
  • From: Eagle point, Oregon USA
Ungluing Parts
Posted by kinekx on Sunday, June 10, 2012 9:21 PM

Can you use Nail Polish Remover to unglue parts without destroying the parts? If not what can you use?

Thnxs

  • Member since
    February 2007
Posted by mitsdude on Monday, June 11, 2012 3:22 AM

A recent similar post got lots of thumbs up for placing the part in the freezer.

 

  • Member since
    October 2008
  • From: England
Posted by P mitch on Monday, June 11, 2012 6:28 AM

Nail polish remover will only work on CA (super glue) as it doesnt "melt" the styrene. The only time I've tried it was only a parcial success. I'd give it a go but dont expect to save any paint if the kit is already painted. As already mentioned the freezer may be a better option for you, but I just used a micro saw in the end and took my time

Phil

"If anybody ever tells you anything about an aeroplane which is so bloody complicated you can't understand it, take it from me: it's all balls." R J Mitchell


  • Member since
    February 2007
Posted by mitsdude on Tuesday, June 12, 2012 3:00 AM

The problem with Nail Polish Remover is there are two basic kinds.

1. The pollitically correct kind that doesnt contain any acetone.

2. The kind that contains acetone.

 

In my experience #1 doesnt do much of anything.

  • Member since
    August 2005
  • From: Mansfield, TX
Posted by EdGrune on Tuesday, June 12, 2012 7:30 AM

kinekx

Can you use Nail Polish Remover to unglue parts without destroying the parts? If not what can you use?

Thnxs

You don't say what kind of glue you used.

Plain old water will dissolve white glue.

Some nailpolish removers will soften joints glued with cynaoacrylate (CA - super glue).   CA Debonders also work to some extent.   Test first.

Tube glue joints are made brittle by freezing.    An old model glued with tube glue may also 'fall apart' due to the glue aging.

Joints glued with modern liquid glues (Tenax, Tamiya Extra Thin Thin, MEK) are welded.   The solvents soften the pieces and when squished together the pieces fuse into one.  No solvent will cause them to separate without causing more damage.   Sawing or cutting becomes the option.

  • Member since
    April 2010
  • From: Somewhere in MN
Posted by El Taino on Tuesday, June 12, 2012 7:40 AM

kinekx

Can you use Nail Polish Remover to unglue parts without destroying the parts? If not what can you use?

Thnxs

If it is a styrene with styrene part, you can unglue with the same glue you used to glue the parts in the first place.

  • Member since
    April 2003
  • From: Eagle point, Oregon USA
Posted by kinekx on Thursday, June 14, 2012 5:18 PM

Sorry for being so vague. Embarrassed Yes the parts are glued with super glue. What I'm wanting to do is to separate the parts so, I can clean them, I have a box of models that i got online that are in need of some TLC.  Missing/broken parts, scratched up paint, torn decals. Here's a couple 

GAF
  • Member since
    June 2012
  • From: Anniston, AL
Posted by GAF on Sunday, June 17, 2012 12:46 AM

I've had some luck with "hot" (not so hot as to warp the plastic) soapy water.  It softens the glue enough to be able to prise the pieces apart using a sharp knife (and some patience).  It also helps to remove the old decals and some paint.

The qualifier to this is:

1. The glue was regular styrene model cement (Testors).

2. I apparently didn't believe in wasting glue, so only some areas were actually glued together.

3. The glue was almost 40 years old.

I've never tried the freezing technique.  Give them both a try and let us know how things work out!

  • Member since
    October 2015
  • From: Quebec, Canada
Posted by SgtDannySgt on Tuesday, August 30, 2016 2:04 PM

I have run into an issue in which I glued parts in the wrong place so am trying the freezer method... who would have known?? Thanks to this fine forum!!

 

Danny

Building 1/144 H.M.C.S. Snowberry by Revell of Germany

  • Member since
    June 2014
  • From: New Braunfels , Texas
Posted by Tanker - Builder on Wednesday, August 31, 2016 4:45 PM

Danny ;

 We just used Ice Water on some very old and not so old railroad structures  .As long as you keep a lot of cubes in it , it works .  T.B.

  • Member since
    September 2012
Posted by GMorrison on Wednesday, August 31, 2016 7:05 PM

As Ed said, there's no way to undo a solvent caused styrene joint if it was done properly. If it was done improperly, i.e. it's held together by the glue (see "glue bomb"); possibly.

I learned a trick from a sign maker friend. Epoxy can be softened and removed with turpentine. The real old fashioned smelly kind. I have no idea why, but it works.

 Modeling is an excuse to buy books.

 

  • Member since
    June 2014
  • From: New Braunfels , Texas
Posted by Tanker - Builder on Thursday, September 1, 2016 7:31 AM

Hey " G "

 Could it be , because old fashioned turpentine isn't politically correct ?     T.B.

  • Member since
    November 2009
  • From: Twin Cities of Minnesota
Posted by Don Stauffer on Thursday, September 1, 2016 8:02 AM

CA (super glue) joints come apart quite well from CA debonder.  Most hobby shops carry the stuff.  It does not hurt the plastic.

 

Don Stauffer in Minnesota

  • Member since
    July 2019
  • From: Vancouver, British Columbia
Posted by Bobstamp on Thursday, June 24, 2021 10:38 PM

I broke one of the stabilators off the 1/72 Academy F-86F that I'm building. I installed a tiny brass pin and re-glued it with Insta-Cure Super Thin cyanoacrylate glue, but checking it this evening I realize that its dihedral was a degree or so too steep and the trailing edge was a bit too low. I've succeeded in loosening it with crazy glue debonder, but...

How long does it take debonder to "dry". I assume it just evaporates, but I don't want to reglue it too soon. Suggestions?

Bob

 

 

On the bench: 1/500 Revell S.S. Hope, being built as the hospital ship U.S.S. Repose; Academy 1/72 F-86F Sabre, and a diorama to illustrate the crash of a Beech T-34B Mentor which I survived in 1962 (I'm using Minicraft's 1/48 model of the Mentor). 

  • Member since
    September 2006
  • From: Bethlehem PA
Posted by the Baron on Friday, June 25, 2021 7:41 AM

kinekx

Can you use Nail Polish Remover to unglue parts without destroying the parts?

The active ingredient in nail polish remover is acetone, a relatively hot solvent.  It'll melt the plastic.

The freezer tip is probably the best one.

The bigger the government, the smaller the citizen.

 

 

  • Member since
    August 2005
  • From: Mansfield, TX
Posted by EdGrune on Friday, June 25, 2021 6:00 PM

the Baron

 

 
kinekx

Can you use Nail Polish Remover to unglue parts without destroying the parts?

The active ingredient in nail polish remover is acetone, a relatively hot solvent.  It'll melt the plastic.

The freezer tip is probably the best one.

If you take the time to read the warnings and cautions on a package of CA debonder [Yeah, I know real modelers don't read freekin instructions!] they point out that it can damage surrounding surfaces.  Always test on an unobtrusive surface before committing to your current masterpiece.  

Freezing may be your best bet

  • Member since
    July 2019
  • From: Vancouver, British Columbia
Posted by Bobstamp on Friday, June 25, 2021 9:22 PM

In a partial answer to my own question, it seems that when the debonder evaporated the cyanoacrylate glue reasserted itself, although the bond is not not as strong as it was when I first attached the stabilator. I'm going to apply a bit of gap filling cyanoacrylate glue and hope that I can the get dihedral and the pitch right this time, although I don't think I'll ever be completely happy with the outcome. But I started building the F-86F model to practice some techniques that are new to me, so it hasn't been a waste of time, or money, I guess.... At least I know more about debonder, which I hadn't previously used.

Bob 

On the bench: 1/500 Revell S.S. Hope, being built as the hospital ship U.S.S. Repose; Academy 1/72 F-86F Sabre, and a diorama to illustrate the crash of a Beech T-34B Mentor which I survived in 1962 (I'm using Minicraft's 1/48 model of the Mentor). 

  • Member since
    June 2021
Posted by rocketman2000 on Saturday, June 26, 2021 9:15 AM

I do find ca debonder softens the plastic.  I have to work fast and be careful not to bend parts.  And thoroughly wipe and clean area after removal.  Try not to take more than fifteen seconds or so.

Don Stauffer in Minnesota

  • Member since
    February 2010
  • From: New Jersey
Posted by 68GT on Wednesday, July 7, 2021 7:14 AM

I bought a semi-built Fujimi GT-40 a while back and used the freezer method with good results. Have no idea of what the original builder used but the freezer cant do any harm and is worth a try.

On Ed's bench, ???

  

  • Member since
    June 2021
Posted by rocketman2000 on Wednesday, July 7, 2021 7:48 AM

True.  It softens the plastic, but if you are carefull and fast, and daub the parts with kleenex or towel immediately afterward it does work well

Don Stauffer in Minnesota

JOIN OUR COMMUNITY!

Our community is FREE to join. To participate you must either login or register for an account.

SEARCH FORUMS
FREE NEWSLETTER
By signing up you may also receive reader surveys and occasional special offers. We do not sell, rent or trade our email lists. View our Privacy Policy.