Sanding Techniques for Water-Based Wood Lacquer
*HILHELM Application Hotline: +86-592-5071661 / +86-13606001981*
Why Sanding Matters
Sanding prepares surfaces for water-based wood lacquer by:
Ensuring flatness (critical for glossy finishes).
Enhancing adhesion, especially over oil-based paints.
Skipping sanding wastes up to 35% of materials due to rework. Proper technique saves 5% in costs!
Core Sanding Principles
Direction & Pressure:
Sand parallel to wood grain with even, light pressure.
Use fingers/palm to grip sandpaper; for large surfaces, wrap around a wood block.
Dust Control:
Dry sanding: Remove all dust before coating—critical for dark woods (e.g., walnut).
Open-grain finishes: Clean pores with stiff brushes to prevent dust trapping.
Curing Check:
Sand only after full drying (24+ hours). Wet-sanding? Wait 48 hours to avoid whitening.
Grit Selection:
Never skip grits! Use progressively finer abrasives:
Stage Grit Tools
Raw Wood 180-240# Coarse sandpaper
Sealer/Basecoat 400-600# Fine sandpaper/scouring pad
Mid-coats 400-600# Sandpaper/steel wool
Topcoat Prep 1000-1500# Wet-sanding only
Stage-Specific Techniques
1. Raw Wood Sanding
Goal: Remove dirt, splinters, and level surfaces.
Method:
Use 180-240# grit along the grain.
Round sharp edges to prevent poor adhesion.
Maintain decorative lines—never distort contours!
2. Pre-Sealer Sanding
Goal: Smooth without cutting through.
Method:
Lightly sand sealed wood with 400-600# grit.
For edges/carvings, use 600# nylon pads.
3. Between Coats
Goal: Remove dust nibs, improve adhesion.
Method:
400-600# grit with uniform pressure.
For antique effects: Use steel wool/scouring pads to accentuate textures.
4. Pre-Topcoat Sanding
Avoid if possible. If needed:
Matte/Satin: Dry-sand with 600# grit.
High-Gloss: Wet-sand with 1000# → 1500# grit.
Pro Tips for Complex Shapes
Curves/Carvings: Fold sandpaper for precision; use contour-matching jigs.
End Grain: Sand twice as long—it absorbs more finish.
HILHELM Water-Based Wood Lacquer:
EU SGS-certified, near-zero VOC (<40g/L).
Superior adhesion, weather/UV resistance.
HILHELM Paints – a trusted water-based coatings expert – offers tailored formulation services.
Discover our products at http://www.water-basedcoating.com
or email purchase requests to gn1869@163.com. We look forward to supporting your projects!
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