A parquet grinding machine (also known as a floor sander or parquet sander) is used to refinish and restore wooden parquet floors by removing old finishes, smoothing imperfections, and preparing the surface for a new finish. Here’s a detailed guide on its usage:
1. Types of Parquet Grinding Machines
– Drum Sanders: Heavy-duty machines for deep sanding (coarse grits) on large areas.
– Orbital Sanders: Gentler, used for fine sanding and finishing.
– Edge Sanders: For sanding edges and corners where larger machines can’t reach.
– Multi-Disc Sanders (Rotary Sanders): Efficient for both coarse and fine sanding.
2. Steps for Using a Parquet Grinding Machine
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# A. Preparation
– Remove furniture, nails, or staples from the floor.
– Check the floor for loose boards and repair them.
– Clean the surface thoroughly (vacuum or sweep).
– Choose the right abrasive grit:
– Coarse (24–36 grit): For stripping old finish or deep scratches.
– Medium (40–60 grit): For smoothing after initial sanding.
– Fine (80–120 grit): For final polishing before finishing.
# B. Machine Setup
– Attach the correct sandpaper grit to the machine.
– Adjust belt tension (for drum sanders) or disc pressure.
– Test on a small area to ensure proper settings.
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# C. Sanding Process
1. First Pass (Coarse Grit)
– Move the machine in the direction of the wood grain.
– Overlap passes slightly to avoid streaks.
– Avoid staying in one spot to prevent uneven sanding (“dishing”).
2. Second Pass (Medium Grit)
– Repeat with finer grit to remove scratches from coarse sanding.
3. Final Pass (Fine Grit)
– Use 80+ grit for a smooth finish before applying varnish or oil.
4. Edges & Corners
– Use an edge sander or hand-held orbital sander for tight spots.
# D. Post-Sanding Steps
– Vacuum dust thoroughly.
– Wipe with a damp cloth to remove residual dust.
– Apply wood stain (if desired),