Reply to thread

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Message: <blockquote data-quote="Steve H." data-source="post: 490057" data-attributes="member: 30558">I just upgraded my sonar/GPS from a 5" Lowrance to a 9" Garmin on my Lund Fury 1400.  Part of the project is to add a poly transducer plate using epoxy (or similar) so that I'm not drilling more holes into the aluminum.  (I'll need to fill the existing holes from the Lowrance.)  I've purchased some 3/4" poly material to use for the plate.  I've watched a few vids on YouTube and have seen different approaches to this.  I think I'm going with 3M 4200 unless someone can steer me clear of this.  Also, after scoring the aluminum on the transom, is it required to use a 'self-etch' primer to condition the metal before applying the adhesive?  Or is it sufficient to just score the aluminum (wire brush?) as well as the poly?</blockquote>