noun
chaplet (metallurgy)
Technical term in casting: a metal support used to hold a core in place inside a mold.
鋳造では、中子押さえを使って中子の位置を固定する。
In casting, chaplets are used to fix the position of the core.
Compound of 中子 (なかご, 'core' in casting) and 押さえ (おさえ, 'hold-down, retainer').