Tips for bending a board using 3 rollers

The trick to bending a board with three rollers is a long video, so I will explain it in two parts: the first part and the second part. Some people may not be good at roller bending. I hope you can understand it even a little better by watching this video.
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[Video contents]
00:00 Opening
01:49 Overview of this video
02:21 About Hana bending
05:01 Steps and precautions for bending a board
08:34 Ending

[@zakollshinkei26]

丁寧な説明でいつも勉強になります。でも前半部分の「他にいい方法があれば」のくだりで 噛んでます(๑˃́ꇴ˂̀๑)
今後もよろしくお願いします。

[@craftsman61]

Zakoll Shinkei2さん！お疲れです！
嚙んでる所も計算なので今後もよろしくお願いします！