> other still those weird round spirally things that, when twisted, pull the metal bit in. Those https://www.ebay.co.uk/itm/284791145273 https://www.ebay.co.uk

> other still those weird round spirally things that, when twisted, pull the metal bit in. Those https://www.ebay.co.uk/itm/284791145273 https://www.ebay.co.uk/itm/284791145273 (sorry can't seem to find them as an official IKEA part)? They're quite clever. They achieve at least these things: - assembly happens from the inside rather than the outside, which looks better and may be easier to assemble in place - the cam pulls the fixing to a particular depth, and no further. Overtightening a screw would be easily done but completely destroys the chipboard from which IKEA products are made - load spreading in the chipboard. Again a screw into the end of chipboard would be very prone to splitting it - very resistant to self-loosening