This time, "How to use the trim router 'Practical version'" explains grooving using U-groove bits, V-groove bits, and dovetail groove bits.

U-groove bit Dainichisho　
https://amzn.to/43wsTIb

V Groove Bit / 90° / Dainichisho
https://amzn.to/3C6RUxS

Dovetail Bit Dainichisho
https://amzn.to/43jOvbm

Makita trimmer RT50D
https://amzn.to/3Z7Ok0Y


■ Regarding the trimmer,
”Explains in detail how to use and structure the trimmer.”
https://isamu-f.com/trimmer/
The article also introduces in detail.

■ DIY know-how blog
"Shall we make one?"　https://isamu-f.com/

▶ Chapter (Table of Contents)
0:00 Intro
0:33 U groove bit
2:56 V-groove bit
7:20 Dovetail groove bit