only the rods got hot.
UV curing adhesives are available in a range of viscosities and several different chemical systems,
most of which are polymer based. These include acrylics, epoxies, polyurethanes, polyesters and silicones.
It can ignite if it reaches a temperature greater then 93?.
bringing its temperature below -60? may embrittle an adhesive. Tapping of the cold part may shatter the bond