3M™ 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 3M™ 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.
3M™ 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 3M™ 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 3M™ 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 3M™ 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

3M™ 07010, Supplied Air Respirator Hose W-9435-25/07010(AAD), 25 ft, 3/8 in ID, Industrial Interchange Fittings, High Pressure, 7000005374, 1 EA/Case
3M 54025, Hookit Clean Sanding Film Disc 375L, P320, 5 in, Die 500LG, 7100106739, 250 per case
ACS CX1250 Diamond Belt, 1/2" X 24" 20u
3M™ 94275, Versaflo™ Gold Coated Tinted Over-Visor with UV/IR Protection M-967N, 70071696879, 1 EA/Case
Standard Abrasives 845411, Surface Conditioning FE Disc, 4 in CRS, 7010368484
3M 87449 Silver Depressed Center Grinding Wheel, T27 Quick Change, 9 in x 1/4 in x 5/8-11 Center Hub Thread, 7010409732, 20 per case
3M 29611, 641WY 1/4" X 24", 100 Mesh Diamond Cloth Belt, 7010534832
3M 85327, Aluminum Foil Tape 431, Silver, 1 in x 60 yd, 3.1 mil, 7010379559
3M 33780, 641WY 1/4" X 24", 400 Mesh Diamond Cloth Belt, 7010534915
3M 38395, Damping Foil 2552, Silver, 2 in x 36 yd, 10 mil, 7000001224
3M 18021, Scotch-Brite SE Surface Conditioning Disc, SE-DH, A/O Coarse, 4 in x NH, 7010364726
3M 20274, Neoprene Contact Adhesive 10, Light Yellow, 1 Gallon Can, 7000144610, 4/case
3M 49456, EMI Aluminum Foil Shielding Tape 1170, 2 in x 18 yd, 1170-2"X18YD, 7000132702
3M 00949, Scotch-Brite Clean and Strip Disc, CS-DC, SiC Extra Coarse, 6 in x 5/8 in, 7100054081
3M 21664, Scotch-Brite Clean and Strip XT Pro Extra Cut Disc, XC-DC, A/O Extra Coarse, Green, 6 in x 1/2 in, 7100176140
3M 00648, Scotch-Brite Surface Conditioning Disc, SC-DH, SiC Super Fine, 7 in x NH, 7100101185
3M 26580, Accuspray ONE Spray Gun System with PPS Series 2.0 Spray Cup System, 7100163226 
