Filler / Putty application - Aluminum 35 Line 1. Preparation for filler / putty Clean carefully with 70U-15 Sand the damage with P150 For small repairs, keep the sanding area as small as possible 2. Mixing ratio of filler / putty Follow the body filler / putty manufacturer recommendation for mixing, application, and drying. 3. Sanding steps Hand block the body filler / putty with P180 first 4. Sanding steps Fine sand the area with orbit machine: P240 Suround area with P320 5. Cleaning steps Clean carefully with 70U-10 before applying undercoat Repair Steps Putty Start working with baslac today. It just makes sense. Contact us Get in touch with your local baslac dealer now and start working smarter. Find a dealer near you