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About primers & putty

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  • Member since
    February, 2017
About primers & putty
Posted by Valleyofvallejo on Wednesday, April 19, 2017 9:26 AM

I have made some mistakes with my kit (because I'm a total beginner) so I would need some kind of putty. I will need to fill both small & relatively large gaps. I'm also planning on trading my Mr Surfacer 1000 for a different primer. I have a few questions to ask. 

 

Would lacquer based primers fog up clear plastic? What would you need to thin Tamiya putty (basic type) & can you use Contacta Professional (the only glue that I have ATM) to thin the putty?

My local hardware stores don't sell Miliput (I live in Australia BTW) so will the following epoxy putty do? http://www.selleys.com.au/fillers-putty/epoxy/knead-it-aqua/ 

  • Member since
    April, 2013
Posted by KnightTemplar5150 on Wednesday, April 19, 2017 10:36 AM

For priming, I use Tamiya's liquid surface primer, cut with lacquer thinner and shot through the AB, without problems with fogging or crazing clear plastic.

For puttying, again, I cut the Tamiya basic type with lacquer thinner, but I have also used acetone in the past.The only glue I have ever used to thin out putty was Testors liquid cement, so I'm not certain if the Contacta works the same way.

The epoxy putty may work, but be aware that some automotive epoxy putties contain a bit of metal powder in them for added strength. This sometimes means less working time and added headaches in sanding and blending. The epoxy putties used in plumbing repair and woodworking often have greater working time and they sand much easier.

  • Member since
    February, 2017
Posted by Valleyofvallejo on Wednesday, April 19, 2017 11:02 AM

The epoxy that I linked to is designed for underwater use.

  • Member since
    January, 2013
Posted by BlackSheepTwoOneFour on Wednesday, April 19, 2017 1:09 PM

Valleyofvallejo

The epoxy that I linked to is designed for underwater use.

 

 

And mainly for Home Contracting work.... sealing around windows, doors, etc...

  • Member since
    September, 2006
  • From: Bethlehem PA
Posted by the Baron on Wednesday, April 19, 2017 3:33 PM

Valleyofvallejo

I have made some mistakes with my kit (because I'm a total beginner) so I would need some kind of putty. I will need to fill both small & relatively large gaps. I'm also planning on trading my Mr Surfacer 1000 for a different primer. I have a few questions to ask. 

 

Would lacquer based primers fog up clear plastic? What would you need to thin Tamiya putty (basic type) & can you use Contacta Professional (the only glue that I have ATM) to thin the putty?

My local hardware stores don't sell Miliput (I live in Australia BTW) so will the following epoxy putty do? http://www.selleys.com.au/fillers-putty/epoxy/knead-it-aqua/ 

 

On styrene, I use a couple of methods for filling gaps, depending on the size of the gap.

If it's small, I prefer to use stretched sprue, using the kit sprue, where possible, and liquid cement for styrene.  That way, I'm using like material with like, and the result is as homogeneous as possible.  For larger gaps, I'll use sprue, or scraps of styrene sheet, on the same principle of like with like.

For putty with a styrene kit, I use Squadron white, thinned with acetone.  I apply it in one of two ways.  One is to put the putty in the gap and then using a cotton swab soaked in acetone to wipe away the excess, leaving putty just in the gap.  The other is to put a dab of putty in a well on my ceramic palette, and then to add acetone with an eyedropper, and mix it till it's consistent.  I call this my home-made Mr Surfacer.  I apply this to the seam or gap with an old paint brush.  Either way, the process leaves the putty in the seam or gap, but not on the surrounding area, reducing the amount of sanding afterwards.

If the gap is big enough, I'll fill it with scraps of plastic to fill the void as much as possible, and then use putty to fill the rest of it.

I have 2-part epoxies (eg, Aves A&B), and Miliput, but I don't like using those as filler.  I find I wind up mixing too much more of the material than I really need, even when we're talking about an amount the size of a pea.  I really use the 2-part epoxies more for sculpting.

I've used an automotive putty, too, but it was a 2-part putty, and again, it was really just more than I needed.  But I don't discourage you from trying Bondo, or 3M's single-part putties.

Hope that helps!

Best regards,

Brad

The bigger the government, the smaller the citizen.

 

http://img.photobucket.com/albums/v233/HansvonHammer/Humor/th_MonogramMafia.jpg?t=1296972087

  • Member since
    February, 2017
Posted by Valleyofvallejo on Thursday, April 20, 2017 4:34 AM

Can you thin styrene putty like Tamiya Basic Type Putty with Contacta Professional (or any modelling cement)?

  • Member since
    April, 2004
Posted by Jon_a_its on Thursday, April 20, 2017 4:47 AM

Can you get hold of Deluxe Materiels Perfect Plastic Putty?

https://www.youtube.com/watch?v=stLzShlnrEk

Workable & cleanup with water, tutorials on their website & pretty much my go to filler.

Holts Knifing Putty for heavy duty filling (thin with Cellulose/lacquer)

  • Member since
    December, 2002
  • From: NYC, USA
Posted by waikong on Thursday, April 20, 2017 10:21 AM

another vote for deluxe material's putty.  Have used squadron and/or CA glue for a long time, the deluxe material's water cleanup and no shrinkage is great.

  • Member since
    February, 2017
Posted by Valleyofvallejo on Thursday, April 20, 2017 12:45 PM

No.

  • Member since
    November, 2009
  • From: Twin Cities of Minnesota
Posted by Don Stauffer on Friday, April 21, 2017 8:53 AM

I use automotive spot/glazing putty.  Works fine for me, and is inexpensive.

Also, check out the techniques forum further down in the list of forums.  There is currently an excellent thread on seam filling.

Don Stauffer in Minnesota

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