Most of the commercial fishermen in this area us a 2-part primer that etches the prop and provides the base for a hard bottom paint - Trinidad Pro seems to be the preferred paint. I'm told it should last 2 or 3 years and just need a repaint with more Trinidad. Before applying the primer, I sanded with 60-80 grit to remove the patina from the prop and expose bright metal.
I did this to the prop last spring and it seems to be working. But the water is still too cold to go down and look. If anyone is interested, I'll find out the name of the 2-part primer. Or you could ask a mechanic in your area who works on the fishing boats and I'm pretty sure he will know what works best in your local conditions. Rick Brass Washington, NC From: CnC-List [mailto:[email protected]] On Behalf Of Joel Aronson Sent: Wednesday, April 03, 2013 2:36 PM To: [email protected] Subject: Stus-List Keeping props clean >From Sail magazine: Prop Paint You don't want barnacles or slime affecting your propeller's efficiency, but it's notoriously difficult to make antifouling paint stick to your prop. Here's how: rough up the metal with some 80 grit sandpaper, then apply a couple of coats of zinc chromate primer. Then brush on your choice of bottom paint. The primer will adhere to the metal, the paint will adhere to the primer, and the barnacles won't adhere to the paint. Who wants to try it? -- Joel 35/3 The Office Annapolis 301 541 8551
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