Setting sash thickness for PanedWindow

[rmcmichael]

I'm using a PanedWindow for a two column layout. The sash width is very thin, making it hard to grab with the mouse and resize the columns. In reading the documentation for TCL/Tk and ttk, you can set a sashthickness property for the Sash style:

style.configure("Sash", sashthickness=6)

The documentation is not clear, but for plain TTK it looks like you can set the sash thickness for some styles, but not others. I've found that the "clam" style lets me successfully set the sash thickness.

However, it is not working using ttkbootstrap. Any ideas for how to set the sash thickness of a PanedWindow in ttkbootstrap?

Thanks