Bahco 665 Carbide Edged H/Duty Paint Scraper

Product Information

Leaving the stripper to work for 10 minutes each time, we got down to the primer after three applications. The Interstrip will leave the primer untouched, ready for the new coat of antifouling. Displacement power vessels have similar requirements to cruising yachts, but pay carefulattention to the manufacturer’s specification for the maximum speed allowed with your chosen antifouling. The rate of erosion of eroding antifoulings increases dramatically at high speeds and will need to be compensated in the amount you apply. Eroding antifoulings will typically not survive speeds above 25 knots, although Seajet claim 40 knots for many of their products. To combat this, hard paints are typically applied to planing powerboats.

Once you’ve got the keel to an acceptable finish, it’s time to prime it with epoxy primer, to seal it, before proceeding to prime and antifoul it. PBO reader Philip Stevens uses a Bosch PSE180E electric scraper with the blade’s corners rounded off. It’s no longer made by Bosch but can still be found for sale online.Antifouling paints are expensive for good reason – they’re a complicated formula designed to work in very testing conditions. But what actually goes into them? Here, as an example, is the contents of one popular paint, Micron 350 (formerly known as Micron Extra).

PBO VERDICT: Slower working and dried the primer out more than Removall, but the paint came off in bigger sheets. When applying, it was viscous enough not to drip. The instructions say to wait until the paint changes colour. Usually, high speeds will dislodge fouling from the hull of a regularly-used boat, but if you only go afloat occasionally you may need to scrub the hull. As with racing sailing boats, you can choose between an antifouling with or without Teflon.Sharpened on a grinding wheel and with the corners ground off, the flat-bladed scraper was good for lifting flakes of paint off.