As stated, the old castle was robbed of stone to build the dam and threshing mill in the early 19th century.
Threshing is the separation of the grain of a crop from the straw.
Originally by hand, the Scot Andrew Meikle of East Linton in 1786 developed a threshing machine, housed in a threshing mill.
The corn was fed in at the first floor level and rollers with grid-like brushes on separated the grain from the straw.
The grain passed through the grid.
The grain was bagged up for the millstones, the straw taken to the straw barn.
A gathering or mill pond, leats and sluices were needed.
The water supply came from the hill above and remains of the control sluice are still visible, with an overflow running through a pipe to the Montfode Burn and the 'spent' water from the mill leaving via a substantial stone lined outflow that exited below the main farm buildings.
A turbine may have been used as no signs of a waterwheel and associated equipment exist.

The ruins of the Montfode Cottages lie in what may have been called the Cuff Holm.
The OS maps show that these typical farm workers dwellings were built in the late 19th century, possibly related to workers at the threshing mill which would have been a business serving other farms in the district.
As stated, the old castle was robbed of stone to build the dam and threshing mill in the early 19th century. Threshing is the separation of the grain of a crop from the straw. Originally by hand, the Scot Andrew Meikle of East Linton in 1786 developed a threshing machine, housed in a threshing mill. The corn was fed in at the first floor level and rollers with grid-like brushes on separated the grain from the straw. The grain passed through the grid. The grain was bagged up for the millstones, the straw taken to the straw barn. A gathering or mill pond, leats and sluices were needed. The water supply came from the hill above and remains of the control sluice are still visible, with an overflow running through a pipe to the Montfode Burn and the 'spent' water from the mill leaving via a substantial stone lined outflow that exited below the main farm buildings. A turbine may have been used as no signs of a waterwheel and associated equipment exist.
The ruins of the Montfode Cottages lie in what may have been called the Cuff Holm. The OS maps show that these typical farm workers dwellings were built in the late 19th century, possibly related to workers at the threshing mill which would have been a business serving other farms in the district.
Montfode Castle