REFLECTOR: smooth prime

Wed Apr 20 19:37:29 CDT 2005

So the soured of the goo was the superfill, and not the smooth prime
then?  

-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Juanita Londenberg
Sent: Wednesday, April 20, 2005 8:12 AM
To: Velocity Aircraft Owners and Builders list
Subject: Re: REFLECTOR: smooth prime

After several months (years) of building we were ready to complete the
sanding of the Super Fill and get it ready for smooth prime. There was
an area of "brown goo" --  It had not been previously primed -- only
filled with the Super Fill.    When I sanded it the first time,
immediately after it had "cured", I did not notice any stickiness to it.
But after sitting for months/years, it finally started showing the brown
goo.  This was in a small area only. I obviously had not mixed the Super
Fill in its proper proportions.  The other 97% of the airplane has not
shown any brown goo......yet.

Re: Top Gloss paint:  When I called the manufacturer to check on
available colors, they also told me that they were discontinuing the
water based paints.  The reason they gave me was that people were not
willing to spend the time to polish their paints to get a pretty shine.

Juanita Londenberg
N4PE

KeithHallsten <KeithHallsten at quiknet.com> wrote:
Oooh - that's bad news.  I have my wings, canard and fuselage all coated
in UV Smooth Prime.  On the plus side, I haven't bought any Top Gloss.
I'll have to talk to the Poly-Fiber folks.  One hopeful note is that I
plan to keep my plane hangared; long-term outdoor exposure sounds like
the major issue with Marc's problem.  I don't see where any "brown goo"
would come from - the Smooth Prime sure seems dry and chalky when
sanding!

Keith Hallsten

----- Original Message ----- 
From: Richard Riley <mailto:Richard at riley.net>  
To: Velocity Aircraft <mailto:reflector at tvbf.org>  Owners and Builders
list ; reflector at awpi.com 
Sent: Tuesday, April 19, 2005 6:28 PM
Subject: Re: REFLECTOR: smooth prime

You would be much better off to throw it out and buy a real LP primer.  

This is from Marc Zeitlin's web page - he runs the Cozy mailing list - 

http://www.cozybuilders.org/chapters/chap25.html

" 

Addendum: March, 2005

It has been brought to my attention that I still have the
"recommendation" in the above page regarding the Polyfiber products.
Having now had these products on my aircraft for 2.5 years in an outdoor
environment, I strongly believe that you should AVOID these products at
all cost.  The Top Gloss has been removed from the market, due (I
believe, although Polyfiber won't admit it in public, but have said so
to another builder) to extremely poor performance when exposed to the
environment, and the Smooth Prime can, in many cases, bubble and exude
brown goo underneath the finish paint, also when exposed to the
environment.  It also (in my opinion) should be removed from the market.

My plane's paint is chalky, chipped, and blistered, after only 2.5 years
of living outside.  The areas on the underside that are not exposed to
UV are still relatively glossy. The paint on the top can be wiped off
wi! th your fingers.  Areas that live under the cover are also still
glossy.  I will need to get the plane sanded down to bare micro and
refinished within the next few years - what a pain in the ass."

Several builders have had Smooth Prime bubble and blister under LP top
coats.  I understand Polyfiber now recommends using an LP or epoxy
primer OVER the smooth prime, before paint. Given that, I don't see any
reason to use smooth prime at all.

At 05:28 PM 4/19/05, gattenby at GBRonline.com wrote:

I was about to use smooth prime for the 1st time today.
I bought it several months ago...
When I opened the crosslinker stuff,  It was crumbly.
Thicker than jello / softer than a gum eraser.
But defanatly not liquid.
I tried heating it, but it won't soften up.
Acetone didn't melt it.
Does anyone know a way to make it work?
Anyway to salvage / use the filler part?

Perplexed

Noel

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