![]() 600 grit is preferred but it depends on how deep the scratches are on the surface of the rock. You’ll need to swap out your Dremel attachment for a sanding wheel. ![]() Dremel 445 1/2 240 grit Rotary Tool Sanding Bands, 6 Pack. Dremel routing bits will be used with the Dremel Plunge Router Attachment 335 or the Dremel Shaper and Router Table 231. Step 2 Now that your stone has its desired shape we move to the sanding phase. : 100 PCs Sanding Bands 600 Grit Drums Sleeves for DREMEL Rotary Tools with 2PCs. A great routing bit kit to get when starting is the Dremel 7 Piece Routing Bit Set 660. Good job! You've made your boat look better, and prevented potential future problems at the same time. The Routing Bits are uniquely designed to do routing and will most of the time be used for that. Clean the surface, then wax and/or polish it with the same product(s) you use on the rest of the boat. (Some gelcoat repair kits will include plastic film for this purpose because gelcoat paste must be sealed off from the air to cure 100 percent).Ĭaution: Always ensure adequate ventilation when working with fiberglass gelcoat - the fumes may be harmful!Īfter the gelcoat has cured, wet-sand it with fine 220- to 240-grit sandpaper until the surface is almost completely flush and smooth then gently wet-sand it with a super-fine 400-grit sandpaper, and finally, with ultra-fine 600- or 800-grit sandpaper. When you're satisfied you have a good, smooth surface, cover it with a piece of plastic wrap to allow it to cure completely. Make sure no air bubbles or gaps are left in the cracks, and use a plastic resin spreader, putty knife, tongue depressor, or similar object to smooth out the surface. sanding bands including the 431, 438, and 446. The 430 drum mandrel is compatible with all Dremel 1/4 In. The 430 includes one replaceable coarse 60 grit sanding band. When you're satisfied with the color match, mix a final batch and use it to fill the cracks and cover all sanded areas. The flathead end of the wrench included in most rotary tool kits can be used to loosen or tighten the screw of the drum mandrel to secure your sanding band in place. ![]() Also remember that the new gelcoat will fade at a different rate than the rest of the boat, and a few years down the line, the difference may become visible. Remember, gelcoat can change color slightly as it hardens, so to match it exactly you'll need to mix a test batch or two, allow it to harden on a piece of cardboard, and then compare the final color against your existing gelcoat. 1,226 Products Grinding Grinding Bits for Metals Made of aluminum oxide, these bits are well suited for use on most metals and materials that are not heat sensitive. Most gelcoat pastes are available in white or neutral colors, but straight out of the can they rarely match aged gelcoat. Using gelcoat paste, add a coloring agent to match the color of your gelcoat, if necessary.
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