The irons for household with a temperature control function are not used for the following reasons: With the temperature of these irons being low, it takes much time to burn the leaves together, and if it seems to be done, the leaves cannot be jointed strong enough and may be peeled due to aging.
温度調節機が内蔵されている家庭用タイプのアイロンでは温度が低く焼き合わせに時間を要し、またうまくいったように見ても接合強度が弱いので経年変化とともに剥離する可能性があるため使用されない。