How to Change template defaults

[Allewyn]

LibreOffice Calc V. 24.2.2.2 (X86_64) installed as a flatpak.
The default line thickness for borders is .75
I want to change the default to .50
How do I do this so all succeeding sheets are the same?
TIA
Allewyn

[Hrbrgr]

@Allewyn

How do I do this so all succeeding sheets are the same?

Rightclick on the “Default Style” and choose Edit Style...
Choose the Tab “Borders” and “Line” and “Preset: All four Borders” and OK.