Please choose the correct ending to complete the given sentence: Home and Garden: [header] How to paint metal [title] Work in a ventilated area. [step] Working around paint and rust particles can be harmful, so choose a well ventilated area where you can put a drop sheet down underneath your metal project. Wear gloves and a dust mask while you work.

Ending1: This will help you get comfortable handling the steel, preventing any eye strain during the project. [title] Set up your canvas or flat work surface. Ending2: [substeps] Keep a damp cloth nearby to wipe away paint, dust and rust particles periodically while you work. This is much safer for you than waiting until the end to deal with them. Ending3: For larger projects, use an oil-based stain remover or primer, and wipe away the rust with a damp paper towel or wipe cloth. [substeps] [substeps] Although rust is easy to remove, there may be small flakes in your metal after you have properly painted it. Ending4: This helps to prevent paint and rust from getting onto your hands. [substeps] Do not forget that you may have to sand or sweep exposed metal.

Answer format: ending1/ending2/ending3/ending4