So presumably by "one take" hahamrfunnyguy means he:

* Stopped recording driving to pick up materials, placing orders where there's a wait for parts to come in, and suchlike.

* Stopped recording things speculatively, just in case he decides to make a video later.

* Stopped worrying about 'narratives' and 'thumbnails' and 'the algorithm' when working.

* Stopped cleaning off his hands and fussing with camera settings to get the perfect shot of every step on every machine.

* Stopped trying to make point-of-view videos and keeping an eye on the camera screen, so he didn't need the tripod between him and the workpiece.

* Stopped retaking any time he messed something up or flubbed his lines or the audio came out bad.

* Stopped worrying about set dressing like having a picturesque, tidy background for every shot

Then the editing process is just editing several hours of video down to a few minutes and maybe recording a voiceover.