![hollow-forge hollow-forge](https://www.tekportal.net/wp-content/uploads/2018/12/hollow-forge.jpg)
hollow-forge [hol-oh-fawrj, -fohrj] verb (used with object), hol·low-forged, hol·low-forg·ing.
- to produce (a tube or vessel) by trepanning a hole in a forging and expanding it with further forging on a mandrel.
hollow-forge [hol-oh-fawrj, -fohrj] verb (used with object), hol·low-forged, hol·low-forg·ing.