Cutting pressure treated wood with chainsaw. Pressure treated lumber is wood that has been treated with chemicals so that it can stand up to environmental wear. To prevent this stainless steel alloys containing low carbon and higher concentrations of even nobler metals like chrome and nickel or hot dip galvanized fasteners which cover the steel with a thick protective coating of zinc oxide which shields the fastener against further corrosion are recommended for long term contact with pressure treated wood on the scale of years. You might want to be careful not to get a ton of chips in your mouth or eyes as that might burn a bit. Perhaps your saw doesnt use enough amps.
Step 5 wash up. Wood that has been creosote treated like railroad ties and some telephone poles however i hear is hard on saws so avoid those. As the cutting racks will be living outside exposed to the elements for the rest of their service life i used reclaimed pressure treated wood from a disassembled jettywharf. In any event keep in mind that with pressure treated wood you get more lasting quality for your money but the trade off is a bit of management when it comes to youngsters in the garden that arent stopped by the tasted.
I have an old bd sawcat and it will do it. Square all the way around the timber and cut from all four sides. Wash all hands and skin immediately after working with and cutting pressure treated lumber. Still might be about a 34 square in the center to cut with a hand saw.
Paint the sealer onto the cut ends and allow it to dry before construction to ensure the entire board is adequately protected. Cutting 6x6 treated lumber barry irby use a sharp thin kerf blade. You will see barns sheds outdoor furniture and even boat docks made out of treated lumber.