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Sticky putty

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dgb
  • Member since
    February, 2017
Sticky putty
Posted by dgb on Monday, March 13, 2017 11:02 PM

I need a putty that has strong adhesion characteristics as well as is sandable. I am filling a shape like a plane fuselage with a localize indentation. Like a shallow dimple from the molding process. Cannot be drilled. Other than roughening the surface not much to wedge into at all. Almost need welding like model adhesives. Newbie at putty. Product that match needs from the myriad of putties out there for modelers?

  • Member since
    February, 2003
  • From: Green Bay, WI USA
Posted by echolmberg on Tuesday, March 14, 2017 6:31 AM

Hello dgb!

I'm trying to get an idea of what kind of indentation you're describing.  Is it like a sink mark from the molding process?  If it's on the shallow side like that, I've had very good success with your basic Tamiya white putty.  It's never separated itself from the plastic before and it sands wonderfully.  Heck, I've even used typewriter correction fluid to fill small indentations depending on the size of the dent I'm trying to fill.

Hopefully others can chime in as well.  

Eric

  • Member since
    November, 2008
  • From: Florida
Posted by plasticjunkie on Tuesday, March 14, 2017 7:20 AM

For welding adhesive I highly recommend Tenax or Plast I Weld, both are excellent.

Perfect Plastic Putty is what I discovered and works out very well. It sands easily and can even be tooled dry with a water dampened Q Tip.

As far as the dimples on the aircraft skin, you can use them to your advantage to display sheet metal stress (oil canning). Just a thought.

  • Member since
    November, 2009
  • From: Twin Cities of Minnesota
Posted by Don Stauffer on Tuesday, March 14, 2017 8:39 AM

I use auto spot/glazing putty. It adheres very well to styrene.

 

Don Stauffer in Minnesota

dgb
  • Member since
    February, 2017
Posted by dgb on Tuesday, March 14, 2017 9:24 AM

I'll try it, thanks dgb

dgb
  • Member since
    February, 2017
Posted by dgb on Tuesday, March 14, 2017 9:26 AM

What brand do you like Don. Small quantity if able. dgb

  • Member since
    March, 2003
  • From: Towson MD
Posted by gregbale on Tuesday, March 14, 2017 10:23 AM

I have switched almost exclusively to using the UV-cured "5-second fix" -type product for similar applications. It can be applied in precisely-controlled amounts, bonds very well to styrene and---best of all---has virtually the same hardness, so it can be easily and cleanly sanded. Downsides are it's a bit pricey for the relatively small amount you get---and a fairly noticeable 'resin'-type odor. But for me its utility outweighs its drawbacks.

It's also the best thing I've found for giving a strong attachment to clear parts...a tip I gleaned from member Don Stauffer. (Thanks, Don!)

Greg

 

George Lewis:

"Every time you correct me on my grammar I love you a little fewer."

 

"

  • Member since
    November, 2009
  • From: Twin Cities of Minnesota
Posted by Don Stauffer on Wednesday, March 15, 2017 5:45 AM

My latest is 3M, still a pretty big tube compared to model shop putty, but priced comparible.  I think Ditzler still makes it, though I have not seen smaller tubes from them.

Don Stauffer in Minnesota

dgb
  • Member since
    February, 2017
Posted by dgb on Thursday, March 16, 2017 10:33 AM
I've tried it now. Do you need to use the hardener for plastic modeling? Also does the sanded surface need a coating of sealer before a primer coat?

 

  • Member since
    July, 2013
Posted by modelmaker66 on Friday, March 17, 2017 2:17 AM

I use Bondo red glazing putty in the tube. Its about $4.00 at wal mart or an auto parts store. it's 1 part putty, a lot like the 3m but cheaper and not such a big tube. reall changed modeling for me when I started using it.

  • Member since
    July, 2013
Posted by steve5 on Friday, March 17, 2017 5:05 AM

has any one heard of vallejo acrylic plastic putty , all you need is a wet cotton bud so easy

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