The greatest difficulty in the cantilever bending technique is that getting the angle and amount of force right when putting the screws into place depends entirely on "touch."
「槓桿法」的難處在於，直接打入鋼釘的角度、力道都要憑藉「手感」拿捏，不能稍有毫米偏差，否則就會傷到如豆腐般脆弱的中樞神經。