‘4000° Plasma Lightsaber Build (retractable blade!)’:-
https://www.youtube.com/watch?v=xC6J4T_hUKg - the Hacksmith YouTube channel (19 mins)
&
‘4000° Lightsaber Test (cuts anything!)’:-
https://www.youtube.com/watch?v=ey_EjSzKFWQ - the Hacksmith YouTube channel (11 mins)
It is a bit ‘Ghostbusters meets Star Wars’ with the backpack on, but still very cool 😃
A few other quality YouTube channels making a lot of cool Star Wars themed stuff:-
The Smugglers Room : https://www.youtube.com/c/TheSmugglersRoom/videos
I Like To Make Stuff : https://www.youtube.com/c/Iliketomakestuff/videos
The Rebel Base Build : https://www.youtube.com/c/JCulley3D/videos (and for a few other film & tv series)
Black Market Outpost : https://www.youtube.com/channel/UCOvMPdpgezpyZ2A1GQZGchA/videos