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Primer for Tamiya acrylics

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  • Member since
    January 2003
  • From: The Hoosier State
Primer for Tamiya acrylics
Posted by plasticmod992 on Sunday, September 19, 2004 3:42 AM
I've had some problems in the past with masking tape lifting the underlying Tamiya acrylic underneath. I was wondering, does Tamiya acrylic require a primer undercoat?, I want to maximize the adhesion of Tamiya acrylic for masking techniques. Any advice would be apreciated, thanks in advance.

BTW, For masking tape, I'm using Tamiya Brand masking tape.

Greg Williams Owner/ Manager Modern Hobbies LLC Indianapolis, IN. IPMS #44084
  • Member since
    January 2004
  • From: USA
Posted by MusicCity on Sunday, September 19, 2004 5:14 AM
That is one of the problems with acrylics, their adhesion is just not that great and they can be pulled up easily. Priming is, as you indicated, an effective way to minimize that problem. It gives something for the paint to adhere to and will help a lot..

Also, make sure your parts are clean before painting. The molding process frequently leaves some mold release oil on the sirface and that can prevent the paint from adhering. Most people just use soapy water for cleaning their parts, then allow them to dry thoroughly. I use alcohol because I'm impatient.
Scott Craig -- Nashville, TN -- My Website -- My Models Page
  • Member since
    July 2004
  • From: SETX. USA
Posted by tho9900 on Sunday, September 19, 2004 9:05 AM
I've used alcohol to clean, sometimes acetone...

usually what I use is acrylic airbrush cleaner from hobby lobby... it's a pink soap used especially to cut through acrylics... it's not real hard on the hands but it seems to cut through a lot... I even use it to wash my hands after spraying. any bit of overspray comes right off with it... It's in a white bottle with a green label made by EZ-Air. says it's enviromentally safe too which is also a plus...

the next thing I am going to try is 409 with orange power.... it cuts through ANYTHING I have used it on in real life... tape residue, oils etc...
---Tom--- O' brave new world, That has such people in it!
  • Member since
    January 2003
  • From: The Hoosier State
Posted by plasticmod992 on Sunday, September 19, 2004 10:17 PM
Just as I suspected, Thanks again guys!
Greg Williams Owner/ Manager Modern Hobbies LLC Indianapolis, IN. IPMS #44084
  • Member since
    April 2003
  • From: Hayward, CA
Posted by MikeV on Sunday, September 19, 2004 10:28 PM
Greg,

I don't know about Tamiya acrylics but I have found that wiping the parts first with Polyscale Plastic Prep makes MM Acryl adhere better.

Mike

Wisdom is the right use of knowledge. To know is not to be wise. Many men know a great deal, and are all the greater fools for it. There is no fool so great a fool as a knowing fool. But to know how to use knowledge is to have wisdom. " Charles Spurgeon
  • Member since
    November 2005
Posted by Anonymous on Sunday, September 19, 2004 11:20 PM
MUST prime if you are masking, and cleaning the part is a MUST also. apart fromt hat, acryls are great !
  • Member since
    January 2003
  • From: The Hoosier State
Posted by plasticmod992 on Monday, September 20, 2004 8:30 AM
Thanks again guys. While I haven't had much luck with using MM Acryls for fine-line work, they do lay down a very durable, smooth paint film, even their flats. If I could get them to spray fine lines as good as MM enamels, they would be the only acrylic paint in my workshop, aside from Gunze ofcource. I'll have to solicit the help of other Acryl users to see if I can improve performance. Any recommendations on preparing Acryl for fine-line spraying? The manufactuer thinner doesn't seem to do the trick for my Iwata Hp-C. I've tried thinning it with everything from 70% Iso, to Distilled water/Iso mix and Windex.......still no joy.
Greg Williams Owner/ Manager Modern Hobbies LLC Indianapolis, IN. IPMS #44084
  • Member since
    July 2003
  • From: Perth, Western Australia
Posted by madmike on Monday, September 20, 2004 10:32 AM
I use Tamiya spray can primer, either fine white or regular grey. It is a lacquer paint and gives a nice smooth finish suitable for over painting with any acrylic or even BMF/metalliser paints.

Being lacquer it provides a great key for subsequent paint coats.

cheers

MikeJ
"I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use." - Galileo Galilei
  • Member since
    January 2003
  • From: The Hoosier State
Posted by plasticmod992 on Tuesday, September 21, 2004 12:34 AM
Thanks MikeJ for the advice. I'll give it a go on my next project
Greg Williams Owner/ Manager Modern Hobbies LLC Indianapolis, IN. IPMS #44084
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