1. Material Sourcing and Preparation
The process begins with selecting straight-grained pinewood logs, prized for their workability and moderate density.
The wood is cut into rough planks slightly thicker than the final float dimensions to account for drying shrinkage. Knots and resin pockets are carefully removed to ensure structural integrity.
2. Kiln Drying
Fresh pine planks contain 20–25% moisture, which must be reduced to 8–10% to prevent warping.
Industrial kilns circulate warm air for 10–14 days, gradually stabilizing the wood's cellular structure. Moisture sensors embedded in the planks trigger automatic adjustments to temperature and humidity.
Main parameters
| Product name | Wooden Plastering Float | Length of plate | 295mm |
| Material | Pine wood | Width of plate | 115mm |
| Color | Natural wood color | Thickness of plate | 1.2mm |
3. CNC Machining
Dried planks are fed into computer-controlled routers that carve the float's rectangular base (typically 280×130 mm) and ergonomic handle in one operation.
Pine's softness allows for precise edge bevelling at 45°, critical for smooth plaster application.Excess sawdust is vacuumed and recycled for biomass fuel.
4. Surface Finishing
Artisans hand-sand each piece using 120- to 400-grit sandpaper to eliminate machining marks. A two-step treatment follows:
• Resin Sealing: Pine's natural resins are reactivated using infrared heating, creating a moisture-resistant barrier.
• Oil Coating: Food-grade linseed oil is applied in three thin layers, each cured for 24 hours to enhance water resistance without compromising grip.
5. Quality Assurance
Each wooden plastering float undergoes rigorous checks:
• Dimensional accuracy: Laser scanners verify ±0.5 mm tolerance in length/width.
• Load testing: A 15 kg weight is applied to the handle for 60 minutes to confirm no deformation.
• Water immersion: Submersion in water for 30 minutes ensures ≤3% weight gain, confirming effective sealing.
6. Packaging
Approved floats are wrapped in anti-fungal paper and packed in recycled cardboard boxes with humidity-indicator cards.
A QR code on each package links to a video demonstrating proper maintenance techniques.
7.Sustainability Measures
Pine offcuts are repurposed into wood pellets, while production follows ISO 14001 environmental standards to minimize waste.
The entire process takes 18–22 days, balancing efficiency with craftsmanship to deliver a wooden plastering trowel that lasts 5–7 years under professional use.
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