SOP-011
Coating Protocol
1.0 // Abstract
Standard automotive sprays exhibit delamination and micro-fracturing when applied directly to porous high-spec 3D prints under kinetic stress. This protocol outlines the precise surface preparation and application methodology for GRAFT Mecha Pigments to ensure permanent adhesion, UV resistance, and impact durability.
2.0 // Required Materials
- GRAFT Polymer Adhesion Promoter (P-01)
- GRAFT Mecha Pigment (Base Coat)
- GRAFT 2K Matte Clear Coat
- Dual-Action Airbrush (0.3mm Nozzle)
- Respirator / Extraction Booth
- Thermal Curing Lamp (Optional)
3.0 // Application Strategy
Surface Decontamination
High-performance polymers inherently retain residual particles and microscopic oils from the manufacturing process. Submerge parts in an ultrasonic cleaner with a mild degreaser for 15 minutes. Wash with distilled water and allow 100% evaporation. Thermal dry at 40°C if necessary.
Adhesion Promotion (Crucial)
Apply a thin, uniform wet coat of GRAFT P-01 Adhesion Promoter. DO NOT BUILD UP. The promoter alters the surface tension of the polymer to accept the primer. Flash off for exactly 10 minutes at 20°C before proceeding.
Pigment Application
Spray GRAFT Mecha Pigments at 18-20 PSI. Apply one light tack coat, followed by two medium wet coats. Wait 5-8 minutes between coats until mathematically matte. The pigment is self-leveling and will sink into the micro-texture of the high-spec print, retaining the industrial finish.
WARNING // CURE TIME
Parts must cure for a minimum of 48 hours before assembly or kinematic testing. Prematurely snapping parts onto the host frame before full chemical off-gassing will result in permanent friction scars.