in woodworking and carpentry, hand saws, also known as 'panel saws', are used to cut pieces of wood into different shapes. this is usually done in order to join the pieces together and carve a wooden object. they usually operate by having a series of sharp points of some substance that is harder than the wood being cut. the hand saw is a bit .
the groasis waterboxx is a device designed to help in growing trees in dry areas. it was invented and developed by dutch former flower exporter pieter hoff, and won the popular science green tech best of what’s new innovation of the year award for 2010.
a chainsaw mill or portamill or alaskan mill is a type of sawmill incorporating a chainsaw, that is used by one or two operators to mill logs into lumber for use in furniture, construction and other uses.. description. the mill attachment consists of a pair of guide rails which are attached to the bar of the chainsaw.the rails ride for the first cut on a plank or on a metal ladder which is .
logging systems are also used to manage forests, reduce the risk of wildfires, and restore ecosystem functions. in forestry, the term logging is sometimes used narrowly to describe the logistics of moving wood from the stump to somewhere outside the forest, usually a sawmill or a lumber yard.
a whipsaw or pitsaw was originally a type of saw used in a saw pit, and consisted of a narrow blade held rigid by a frame and called a frame saw or sash saw see illustrations . this evolved into a strht, stiff blade without a frame, up to 14 feet long and with a handle at each end, the upper called the tiller and the lower one being the box, so called from its appearance and because it .
a modern bow saw is a metal-framed crosscut saw in the shape of a bow with a coarse wide blade. this type of saw is also known as a swede saw, finn saw or bucksaw.it is a rough tool that can be used for cross-cutting branches or firewood, up to six inches 150 mm in diameter.
a log house moulder is a machine to prepare logs to be suitable for building a log home.in general, the logs are first sawn to a square beam, then the moulder makes the groove. often fitted to a portable sawmill that enables direct profiling of round or squared logs. the log house moulder is usually powered by electricity, but for portable sawmills they are sometimes using a chainsaw as power .
churn drills in ancient china were built of wood and labor-intensive, but were able to go through solid rock. the churn drill appears in europe during the 12th century. in 1835 isaac singer is reported to have built a steam powered churn drill based on the method the chinese used.
paulownia / p ɔː ˈ l oʊ n i ə / paw-loh-nee-ə is a genus of seven to 17 species depending on taxonomic authority of flowering plants in the family paulowniaceae, in the order lamiales.they are present in much of china, south to northern laos and vietnam and are long cultivated elsewhere in eastern asia, notably in japan and korea where they are native.. it was introduced to north .
portable sawmills are sawmills small enough to be moved easily and set up in the field. they have existed for over 100 years but grew in popularity in the united states starting in the 1970s, when the 1973 oil crisis and the back-to-the-land movement had led to renewed interest in small woodlots and in self-sufficiency.their popularity has grown exponentially since 1982, when the portable .
also, smaller portable sawmills and chainsaw mills use rip-cuts to produce lumber. each time a piece of wood is rip cut it takes time and the kerf material turns into sawdust and loses value so the number and width of each rip cut influence the economics of the operation: this gives band saws an advantage over circular saws and chainsaws.