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Tamiya LSP vs FSP

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  • Member since
    February 2021
Tamiya LSP vs FSP
Posted by MJY65 on Sunday, September 5, 2021 6:23 AM

Is the grain structure the same in the bottled Liquid Surface Primer as in the rattle can Fine Surface Primer?

  • Member since
    February 2021
Posted by MJY65 on Wednesday, September 8, 2021 8:12 PM

I picked up a bottle of LSP today, thinned it 1:1 and primed some spoons and squares of styrene sheet.  Did the same with decanted FSP.  If there's any difference between the two, it would take some ridiculously careful observation to detect it.  Certainly not enough to justify decanting, IMO. 

  • Member since
    October 2016
  • From: Louisiana Gulf South
Posted by Mrchntmarine on Friday, November 4, 2022 5:36 PM

I picked up a bottle of LSP to try.  What pressure / tip size for airbrush do you use?

 

Keep on building!

  • Member since
    April 2020
Posted by Eaglecash867 on Friday, November 4, 2022 5:51 PM

Mrchntmarine

I picked up a bottle of LSP to try.  What pressure / tip size for airbrush do you use?

 
When I shoot mine through my Paasche H, I use the #1 needle/air cap at 20 PSI or less.  Just thin it for a skim milk consistency before putting it in your airbrush cup.  I use the little Dixie paper bathroom cups as mixing cups.  They hold up just fine to solvent-based paints and primers like Tamiya LSP in either the bottle or can.  I like mixing before anything goes in the airbrush so I know I won't have little pockets of thinner and thicker paint from incomplete mixing.
 
I thin mine with MEK, so if you're using something other than that, I'm not sure what works well and what doesn't.  All I know of other possible thinners is that it doesn't react well to isopropyl alcohol...that almost instantly turns it to cottage cheese.  Lacquer thinner would probably work though.

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

  • Member since
    October 2016
  • From: Louisiana Gulf South
Posted by Mrchntmarine on Sunday, November 20, 2022 9:33 PM

Sorry - just seeing this. 

anyone else thin it with LT???

 

Keep on building!

  • Member since
    November 2018
Posted by oldermodelguy on Monday, November 21, 2022 3:47 PM

Mrchntmarine

Sorry - just seeing this. 

anyone else thin it with LT???

 

I think you will find most people thin lacquer primer with LT, which is what the Tamiya product is.

  • Member since
    June 2014
Posted by BrandonK on Monday, November 21, 2022 5:00 PM

I use Fine surface primer exclusivly shot through my Iwata with .5 needle, straight decanted. Since I use the larger needle I no longer thin, but when I did I used LT or Mr Hobby leveling thinner. Either way I always sand with 3K padded paper for a ultra smooth surface, then paint.

BK

On the bench:

Tamiya 1/35 M4A3E8 "Fury" with crew,

1/32 Kittyhawk Kingfisher,

1/35 Meng Panther Ausf A Early,

1/48 Pro Modeller P-51C "Boise Bee"

2022 Completed:

1/12 Bandai Mandolorian

1/25 Revell 29 Highboy

1/48 Tamiya Sea Harrier

1/25 Revell 70 Boss 429 Mustang

1/48 Hasegawa D3A1 Type 99 Val

  • Member since
    October 2019
  • From: New Braunfels, Texas
Posted by Tanker-Builder on Thursday, December 1, 2022 8:30 AM

MJY65:

 I am glad you clarified what you were referring too. I was thinking" LSP v.FSP" what the Heck is that?" Of course I wouldn't really know. When I had an airbrush I used a common Primer thinned after decanting 1:1. The Primer? Krylon Surface primer in Dove Grey!

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