This subject comes up now and then so I am posting the data for when it is needed. Back in the good old days we didn't buy litz wire we made our own . That is the appeal of this unit, it used plain wire (make your own litz).
The LW former would be made in the same manner and then have an o-ring placed on each end to build a 'dam' to hold the wire in place as it is would.
It's a starting point even if you don't have the ferrite. I have a 6" rod to adapt. I haven't had much bench time lately so I have found a project.
Use the process from this post and make your coil then add the core to make a variable inductor to use with fixed capacitor.
Making a coil for IF or RF
Edit 2: Glue the ferrite to a threaded rod or use a copper or aluminum screw to make this one.
making a variable inductor
With so many possibilities just build something!