you can wear safety glasses when sanding and cutting wood.
To separate metal from wood glue, you can use mechanical methods such as scraping or sanding to remove the glue residue from the metal surface. Alternatively, you can use a solvent appropriate for the type of glue used, such as acetone for certain wood glues, following safety precautions and manufacturer instructions.
Balsa wood has no outstanding health hazards associated with it. The primary safety hazard is that of fire from the wood itself or from sawdust created by working the wood.
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Oak wood burns at a temperature of 1300 to 1600 degrees C. When burning wood, it is important to use proper safety precautions.
Medium sandpaper is best for sanding wooden furniture.
A sanding block is basically just a small piece of wood or other material covered with a sanding belt or sand paper.
Sanding or planing.
construction
If it's a wood deck, then sanding is the best option. Pressure washing will damage the wood which will have to be repaired by sanding. Also, if the coating has a tenacious bond, pressure washing will not get ir all up. The rest will need to be removed either chemically, or mechanically by sanding.
physical
Yes, it is a physical change.