Surface Preparation

Using Icing (bog) to Fill Holes

Subject: Re: Using Icing
Date: Thu, 19 Oct 2000 08:10:11 -0700
From: "Rob Skinner" 

On 10/19/2000 at 7:14 AM Mick wrote:
=I have a blower cover from a Briggs 5s I'm trying to prepare for
=painting. It has several pit marks and a few pinholes in it.
=     How thick do I apply the icing? Should I put it on very thin then
=sand until just the pits have filler in them? 

Correct.  When you're finished with the prep, you want to see filler in the
low spots and metal on the good areas.  

The problem will be in your pinholes.  I'm assuming you're talking about
rust holes in otherwise undamaged areas.  If you just cover it up with
filler and sand it down, it will be a THIN repair over a SMALL area and
the filler may not adhere.  An alternative would be to carefully dent the
area of the pinhole to make the repair larger, giving it better adhesion.

You were talking about repairing pits.  If the pits are deep, as in an iron
casting, filler is the way to go.  However, if you're worried about shallow
pitting, as might occur in lightly rusted sheet metal, epoxy primer might
be an easier method.  Epoxy, or filler primer is a two part product that
sprays on thicker than regular primer.  You can spray it on to fill the
pits and then sand it down after it hardens.  

Rob


=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Rob Skinner    La Habra, California
mailto:rskinner@rustyiron.com
http://www.rustyiron.com
PGP ID= 0xE6E79138

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Subject: Using Icing
Date: Thu, 19 Oct 2000 10:15:02 -0500
From: "Charles Balyeat" 

Maybe a coat or two of primer surfacer , then wet sand with 400-600 grit ,
then fill the wee pits with icing or spot putty in very sparing amounts .
then wet sand again . The icing is unique in that you can brush it on to
smooth a large area such as rough sand castings (an entire block ) Spot
putty you put on with a plastic spreader .
 Chuck