Magic marker hash marks half way point.Sawzall with fine tooth,keep guide on surface at all times.Do not go to fast it will get away from you.Start cut made with circular saw enough only to insert sawzall blade.Careful with circular saw for kick back.Set circular saw only 1/4 inch deep place plate of saw on surface then gently move saw down to make start cut.Make sure barrel is on table up against a wall .Start at top and pull sawzall down,stop and turn barrel up.Wear mask and do not rush.Another person to help turn barrel and stabilize.For drain hole a hole saw with drill,do not force caus drill will catch and twist and possible pilot bit break.Eye protection always with power tools!
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