Billy Ikea Dowel holders and joints (T and Corner)

Brackets to fit the holes of a standard cupboard (5mm) 

Corner brackets and dowel T-joint are scalable. , 

Currently the corner bracket and T-joine has an internal measurement of 23,5mm but you can scale up or down to use as you need. There is also a disc for measurements reference on several of the plates (the dowel holder 10mm, 20mm and 23mm is not scalable as this need to fit in the bookcase).

Feel free to use and sell any of these parts.

You can use dowels, steel bars or even print parts for int between the joints.

A boost would be appreciated.