Tensions in the wood can sometimes result in similar symptoms as faults in the cutting equipment.
C.Tensions in the
wood
The M7 sawmill can only saw straight. If the wood grain twists during sawing, precision will be lost. Tension can cause large variations in measurement. Broad leaved trees have greater tension than do evergreens, but even the latter can have problematic tensions. One example is in trees that have grown on sharp inclines. In such cases a whole group of logs can be hard to saw.
Tensions can also arise in storage. If the bark and top segment begin to dry, the whole surface will begin to shrink. In such a case, when one side is trimmed, the log may bend slightly.
It is easy to discover tension in logs that leads to measurement errors. Each time you pull the saw back, you can read what is happening in the log. As long as the guide bar continues to lie just above the newly sawn surface, the log has not bent. However, if a spaces show up between the guide bar and the sawn surface or if the guide bar is pressed upwards, it is time to plan how the next cut will go to reduce the tensions.
When sawing from the top towards the bottom, the wood has a tendency to sink at the ends pulled by its own weight. This is especially true if there is large
true, then it would be best to turn the log after passing through the centre and saw the rest of the material from the other side.
Some tips for avoiding the effects of wood tensions.
1.Cut wood with tension in as short lengths as possible.
2.Work around the log, sawing all sides in order.
3.Special arrangements may be needed in order to get a perfect measurement on the last board of a log. One effective way is to saw the last cuts using a recently sawn board as support.
Demands on precision
We are convinced that the M7 Wood Workers Mill provides as good or better results as other sawing methods. A large number of users of the Logosol sawmills have reported that they have never had better wood products than those they have sawn themselves with their Logosol mill.
However, it is natural that we also meet customers who want to improve on the precision. By now we know that variations in sawing results can have many explanations. The choice of raw material is vital. Cutting good boards from short, sturdy logs is considerably easier than getting the same results with thin, long ones. Tensions caused by storage or place of growth can cause problems. Some tree types cause more problems than others. The
reasons are many, including how much time is available. Sawyers with unlimited time have a greater chance to succeed than those whose time is short.
The precision requirements also vary. A result that is satisfactory for someone sawing boards for rustic fence posts may not be good enough for someone sawing boards to be used in construction without being planed.
If you have gone through the various steps for adjusting the M7 sawmill, checked the cutting equipment and observed the effects of tensions in the wood,but still do not get the sawing results you expect, contact us at Logosol. We have years of experience and can always help you find solutions to problems you may have.
Cutting equipment
The Logosol PMX chain pro- vides for rapid ripping with a narrow kerf. But it is more sensitive than normal chains. Still, if you keep the cutting equipment in trim, you will get the right measurements, the sawing will be quicker and the cutting equipment will last longer.
File before it slows down
You will sense that the chain is loosing its edge by the fact that the sawing slows down, the guide bar gets hot and the feed is harder. Stop sawing at once! At this point it’s really too late to file. Sawing with a dull chain exposes the sawing equipment to great wear and tear. You
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