REFLECTOR: priming "how to"?

[Al Gietzen]

Grigore;

 

Going from memory here - I believe the 8001 and 2 are 'high build'
(sometimes referred to as re-surfacers) whereas the 3001 and 2 are regular.
And I think the 001 is white and the 002 is gray.

 

I have also used the 'Interlux epoxy Primekote' with good results.  It is
less expensive than the US paint 545, and is more readily available at the
marine supply stores around here.  It is higher solids than the 545 so makes
a good filler-primer.  

 

Al

 

-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Grigore Rosu
Sent: Monday, January 07, 2008 5:44 AM
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: priming "how to"?

 

Thank you Ron and Al, based on your answers I did some investigation on the
web.  I'm affraid I cannot buy the primer from our local shops here in the
small Urbana/Champaign (mid Illinois), so I'll have to order it online.
There appear to be some options outhere, just to confuse me :) 

 

Option 1

 

Awlgrip 545 Epoxy Primer White Base awlD8001GL

   mixed 1:1 with

Awlgrip Converter for 545 Epoxy Primer awlD3001GL

 

and

 

Option 2

 

Awlgrip 545 Epoxy Primer White Base awlD8002GL

   mixed 1:1 with

Awlgrip Converter for 545 Epoxy Primer awlD3002GL


The difference between the two is "001" versus "002".

 

In both cases, it is recommended to reduce the mixture up to 25% with

 

Awlgrip Std. Spraying Reducer for Epoxy Primers awlT0006GL.

 

I'm assuming we spray this primier.  Brushing it comes with a different
reducer.

 

Am I on the right track?  Is this what you are using, too?  Which one should
I order, the "001" or the "002"?

Also, these appear to be rather expensive ... Apparently they can all be
bought in either quarters or gallons.  Can you estimate like how much of
each I will need for my airplane (Velocity SEFG, fast built)?

 

Many thanks again,

Grigore

 


 

On Jan 7, 2008 12:00 AM, Al Gietzen <ALVentures at cox.net> wrote:

Can anybody help me suggesting some place where this process of priming, as
we need it for Velocity, is explained?  Is it necessary to protect the work
underneath, or it is being used just for aesthetical reasons during the
building process?  Does it add any unnecessary weight? 

 

Thank you,

Grigore

Grigorie;

 

Just adding a bit to what Ron has said; we use a primer coat for a number of
reasons. It does provide protection of the surface by sealing, and contains
a UV blocker; it acts as a 'filler' to help smooth the surface; and provides
for good adherence of the top coat final finish.  The parts come from
Velocity (at least mine did) with a coat of the US Paint 545 Awl-grip that
Ron mentioned, so it made sense to use that again.  There are other expoxy
primers that you can use.  

 

These primers are 'sandable', and you will need to sand to about a 400 grit
finish before putting on a top coat.  However; it is good to leave unsanded
until you are ready for final paint because once you sand off the gloss
surface it is more likely to absorb contaminants (like oil and finger
prints) that are diffictult to clean up.  You are likely to find that for a
first coat over fiberglass you may want to first use a 'high build' primer
to fill pinholes and surface imperfections.  You can use either a good
urethane or expoxy primer for this coat. Most of this will get sanded off
before applying the final coat of expoxy primer. 

 

Follow mixing, thinning and application instructions from the manufacturer
of the primer or finish coats that you use. 

 

Good luck,

 

Al

 

 


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