Large bandsaw blades are used to transform logs into lumber at a sawmill. To create large amounts of rough cut lumber, the same procedure is carried out log by log.
The first stage in getting a log to the sawmill is timber harvesting, or logging. Chainsaws are used to fell trees during the forestry process. Felling is the name of this action. Felling basically entails taking the tree down and cutting it to size. The log is then delimbed and put on a truck to be taken to the mill. The logs are unloaded at the mill, arranged into heaps, and then ready for cutting.
The Log Enters The Sawmill – The log is then moved with the aid of large machinery and placed on a conveyor where it is waiting to be cut.
Debarking The Log – The log will enter the mill to be debarked once it reaches the front of the conveyor belt. The bark is removed from the log by a debarking equipment. The bark is then kept since it can be used as sawmill kiln fuel or sold as mulch.
Metal Detection – Before being cut, each log will pass through a sizable metal detector. There is no way of knowing what might be found in trees because they can live for hundreds of years. If you don’t catch them in time, metals like nails, wire fencing, or other objects made of metal might ᴅᴇsᴛʀᴏʏ your sawmill blades. To salvage as much of the metal-containing logs as feasible, the metal will either be removed or the wood will be divided into smaller pieces.
Merchandising the Log – Modern retailing has greatly increased sawmill efficiency. The mill may maximize the amount of lumber it gets from each and every log by using lasers to estimate the log. This can increase mill profitability over the course of days and weeks by reducing needless waste on each log that is turned into lumber.
Head Rig Sawing – The head rig is most likely what comes to mind when you think of a sawmill. Logs are secured on a conveyor belt and fed into the head rig saw, where the head rig blades cut through the log.
Canting the Logs – The log is divided into cants by the head rig, which produces logs that are flat on at least one side. It is possible to sell the logs as cants that have only been milled in one size, but this is not typical. If the required size of the lumber is not specified, the company will probably purchase cants and cut them to size. Since the dimensions of the product it will be used for determine the pallet size, pallet makers frequently do this.
Resawing – Usually, cants that move on to the resawing stage are milled into rough-cut lumber. The timber is divided into the boards that were merchandised in step 5 by the resaw using several bandsaw or gang saw blades.
Edging the log – The lumber gets its sides cut in this process. By doing this, the log is squared up to meet a particular grade or breadth.
Trimming – The lumber is then cut to length using the trimmer. Depending on the order or timber size we’re attempting to do, the length will change. We produce wood that can be up to 50 feet long.
Grading the Lumber – The actual milling operation is now complete and the lumber is ready to be graded. Essentially, this is a quality control procedure. The grade is typically referred to as “FAS” because the majority of sawmills only sell rough cut lumber and won’t plane it. First and second grades of lumber were once utilized, but FAS was created by combining the two.
Drying – Many sawmills choose to let their lumber air dry instead of using a kiln to dry it. Others invest in kilns, which can considerably hasten the drying process and raise the price of the lumber.
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Video resource: Amazing Mechanic