This solidly-built wooden high chair will last from child to grandchild to great-grandchild! This plan has many difficult compound angles. It has a high level of difficulty and is recommend it only for the experienced woodworker.Accessories (sold separately)High Chair Hardware - a complete set of hardware to make a 'removable' tray. adjusts to three positions. Made of cold rolled steel, zinc-plated. supplied with installation screws - four 5/8' x #6 flathead, Nickel Plated and 4-1/2' x #7 roundhead Nickel Plated. Supplied with a pair of latches and catches. tray has three positions for adjustments.High Chair Safety Strap - strong polypropylene safety strap and security buckle that wraps around baby's waist and between legs.Wood High Chair Trays - high chair trays measuring 9 deep by 21 long by 13/16 thick in oak or maple.Wrap Around High Chair Trays This alternative to wood trays makes clean up a breeze. The white vinyl coated wood tray, wraps around to secure the baby and create more space. Wrap around tray measures 21' wide by 15-3/4' deep by 1' thick. Flat underside fits most high chairs. Note: if you intend to build this project for use by children, please make sure you follow current governmental safety guidelines for the country, state or jurisdiction in which you live. For the USA, current guidelines can be found at the Consumer Product Safety Commission website: http://www.cpsc.gov/ While efforts are made to design this plan to safety guidelines, no guarantee is made that this plan is current with the particular regulations or guidelines of your governmental jurisdiction.