So I took some dark wood (not good enough for furniture) I have in stock and cut it to length and width
Then, with my circular saw and a special blade, I made a first 0,6 mm groove on both side :
The second groove is done 0,6 mm ahead and bit higher :
Because sanding would have ruined the grooves, for cleaning I used a razor blade which can be a great tool !
After painting and lightly aging, here is the completed paneling :
And now, back to work because I must do a huge quantity of this wood paneling ...
Have a nice week end and stay tuned !