Mailing List lml@lancaironline.net Message #29092
From: Leighton <leighton@teleport.com>
Sender: Marvin Kaye <marv@lancaironline.net>
Subject: Primer
Date: Thu, 24 Mar 2005 14:44:59 -0500
To: <lml@lancaironline.net>
Pat, and others,
 
In regard to primers, here's what we've done to prep several Lancairs at the suggestion of the person who was going to paint them:
 
Sand bare surfaces and wipe with solvent
Apply PPG K38 high build primer surfacer with a 4" paint roller
Sand with 80 grit dry, using a board
Repeat as necessary to desired smoothness (any really bad areas will show up and can
     levelled with micro)
Repeat until satisfied with quality of surfaces
Apply PPG K36 primer, reduced, with a spray gun
 
At this point we flew the planes and later took them to the painter who did whatever it is they do.  I can't compare this to other products but I find it hard to believe any other method would be significantly better.  I'm sure there are as many opinions as there are builders out there, but this has worked well for us.  On this same subject, I recently discovered the best sanding board I've ever used.  It's urethane foam with a stainless steel face for the paper to stick to.  The unique feature is that it has 3 removable steel rods that can be inserted or removed to change the flexibility, stiff for wing surfaces and softer for the curvier parts of the fuselage, for example.  I got mine from the Eastwood Company (eastwood.com or 800-345-1178).  Get one of their free catalogs.  They have a lot of neat stuff we can use.  They also have rolls of sticky back sandpaper for use on sanding boards at a decent price.  Now, if I could just find someone who likes to sand...........
 
Leighton Mangels
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