- Joined
- Aug 28, 2010
- Messages
- 5,431
Found these instructions for making a big grindstone for sharpening axes, etc.
"Grindstones can easily be made locally from 20 litres of good quality cement and 50 litres of quartzitic sand with 1 mm or smaller particle size. The sand must be sieved (e.g. with mosquito netting), be washed and clean from clay or salt. In addition, an iron tube or rod is needed, about 60 cm length and 2 cm diameter with a nail welded to its middle.
"The grindstone is made in a wooden mould (2) which is set up in a shady place. The mould is approximately 50 by 50 cm in size and 15 cm high. It consists of two parts (2a) which are placed on a board (2b) resting on two supports (2c).
"Exactly in the centre of the mould the iron rod is placed, forming a perfect right angle with the mould and securely held in position by small boards nailed on the mould (3a).
"After filling the mould with mortar and compacting it carefully, the grindstone is left to dry for about three days. Some sprinkling with water may be required to avoid too rapid drying.
"After removing the grindstone from the mould, the stone is placed in a trestle with a piece of an old tyre fitted underneath as a water container (4a).
"This type of grindstone is also handy for sharpening agricultural tools such as hoes and spades and should be available in any village."
--quotes and diagrams from
"Wood Harvesting with Hand Tools
An Illustrated Training Manual"
By: International Labour Office
Published by: International Labour Office Publications Branch CH-1211 Geneva 22 SWITZERLAND
online at Autonopedia.org
http://autonopedia.org/crafts_and_technology/Wood/Wood_Harvesting_with_Hand_Tools.html#axes
"Grindstones can easily be made locally from 20 litres of good quality cement and 50 litres of quartzitic sand with 1 mm or smaller particle size. The sand must be sieved (e.g. with mosquito netting), be washed and clean from clay or salt. In addition, an iron tube or rod is needed, about 60 cm length and 2 cm diameter with a nail welded to its middle.
"The grindstone is made in a wooden mould (2) which is set up in a shady place. The mould is approximately 50 by 50 cm in size and 15 cm high. It consists of two parts (2a) which are placed on a board (2b) resting on two supports (2c).
"Exactly in the centre of the mould the iron rod is placed, forming a perfect right angle with the mould and securely held in position by small boards nailed on the mould (3a).
"After filling the mould with mortar and compacting it carefully, the grindstone is left to dry for about three days. Some sprinkling with water may be required to avoid too rapid drying.
"After removing the grindstone from the mould, the stone is placed in a trestle with a piece of an old tyre fitted underneath as a water container (4a).
"This type of grindstone is also handy for sharpening agricultural tools such as hoes and spades and should be available in any village."
--quotes and diagrams from
"Wood Harvesting with Hand Tools
An Illustrated Training Manual"
By: International Labour Office
Published by: International Labour Office Publications Branch CH-1211 Geneva 22 SWITZERLAND
online at Autonopedia.org
http://autonopedia.org/crafts_and_technology/Wood/Wood_Harvesting_with_Hand_Tools.html#axes
