3Mâ„¢ Marine High Strength Repair Filler is a uniquely modified vinyl ester structural filler formulated with short strand fiberglass for non fairing applications. The fiberglass fibers interlock to give our filler additional strength compared to regular fillers. Filler is non staining, non shrinking and it comes with 3Mâ„¢ Marine Creme Hardener.
We recommend this product for filling and covering scratches, dings, rust outs, blemishes, pinholes and other simple surface defects that otherwise exhibit a true or fair line. Use this filler to level or even out depressions and low spots.
3Mâ„¢ Marine High Strength Repair Filler comes in a paste consistency that can be applied on vertical surfaces. It offers a working time of 10 to 15 minutes and may be sanded in 30 minutes.
Directions for use – Before using this product, please reference Product Label and/or Safety Data Sheet for Health and Safety Information:
- Must be used when surface, product and shop temperature are above 60 degrees Fahrenheit.
- Clean surface free of dust, grease, wax, oil and moisture. Laminate must be dry.
- Grind damaged fiberglass using a coarse grade (40 grit) 3M abrasive, and wipe clean with a tack cloth.
- Mix 3Mâ„¢ Marine High Strength Repair Filler thoroughly. Next, apply desired amount of filler on a clean non porous mixing surface. Do not use cardboard.
- Add 2 percent 3Mâ„¢ Marine Creme Hardener (1 1/2 inch strip to a golf ball sized amount of filler). Mix filler and hardener to a uniform color, making sure to break any air bubble that may have been introduced. Mix only what you will use in 15 minutes.
- Apply 3Mâ„¢ Marine High Strength Repair Filler to a clean surface to be repaired. Apply additional filler no thicker than 3/8 inch per layer, building slightly lower

Dynabrade 11475 Dynabelter Abrasive Belt Tool, Standard Duty
Dynabrade 15101 Tension Arm (for Mini Dynafile II)
Dynabrade 64350 26" W x 36" L (660 mm W x 914 mm L) Metal Capture Downdraft Station, 230 V (AC)
Dynabrade 53533 Cone or Plug Grinder (Triple Extension)
3M 71358, 641WY 1/4" X 24", 600 Mesh Diamond Cloth Belt, 7010534894
3M 86434, Scotch-Weld EPX Mixing Nozzle, Square Green, 1:1 and 2:1, 48.5mL and 50mL, 7100104991
3M 89705, Roloc Fibre Disc 787C, 120+, TR, 3 in, Die R300V, 7100100966, 200 per case
3M 10844, Scotch Vinyl Color Coding Electrical Tape 35, 3/4 in x 66 ft, Yellow, 7000006096
3M 60210, Scotch Restickable Glue Stick, 6314, .49 oz, 7010416452
3M 08405, Flexiclear Body Seam Sealer, 1/10 gal cartridge, 7000121530, 12 per case
3M 16578, Accuspray ONE Spray Gun Kit, 7100096182 
