Seems that bent nails are an acceptable method of attachment, thinking free. There we go. Subframe and the seat frame have been separated. Here's the wooden subframe.
{# E23 (Nick, ruling section 1 answer 10): quoting a bill or a court opinion works
the way quoting a news article works. Select a passage above and the same panel
opens: the passage goes to the official you choose, with this document's own
address as its source and its own type. #}