Note about the dovetail track nut piece:
I use a standard 1/4in shank, 14° angle, 1/2 profile to create the slots in a 3/4in MDF Sheet.
It slides perfectly and hold the material without issue.
There is also a small slot below the piece to use a t-track 1/4-20 bolt. (any length depending your use case)

You can support my work on my etsy shop : https://studiowebux.etsy.com