Stone wall built in 1838 of sandstone and granite river stones with a lime mortar. Hole required for boiler exhaust flue with 3 degree back slope. Second hole made for extractor fan. Achieved with a column mounted Husqvarna DM220 core drill (carotteuse).
- 2 жыл бұрын
Core drilling a150mm hole through a 62cm solid stone wall. Carotteuse.
- Рет қаралды 59,116
Пікірлер: 33