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Range 80% MC Measurement

With the various types of wood and the difference density, fiber and other mechanical properties make the MC a standard size components can not be a measure of death. The MC on the other side components may be different to the MC on the other side. MC problem often confuse the QC when they have to make a decision what the appropriate MC for a component, especially when they find too high-level MC.
8-14%
Wood that is too dry is not necessarily good for use as raw materials. That is why the standards of good MC are determined between 8 - 14%. Some companies recommend 8-10% or 6 - 12%. All of this is certainly reason, could be due to differences in types of wood, thickness of components, component locations on a product, or type moisture content measuring instrument. MC is too low will create brittle wood, especially at the time the product was in dry air or outer space. When MC is above 14% means there is still a possibility of changing shape when the timber has been product and affected the outside air temperature. Wet wood also will invite fungus or types of fungi attached to the wood surface so that the damage finishing and can provoke insects to eat the wood because the wood becomes softer.

Doubts arose again when he found a few other points that have measured high MC, even more than 20%. QC in this case would be hesitant in deciding whether these components should be refunded to the Dry Kiln or not. Common causes are holding the product or component to the next process. Decision like this average is made because they follow the guidelines / manual inspection.
Area 80%
There are things beyond just needed a guide to decide issues like the above. At first we must understand that wood is a natural material and we can not implement an exact science. This means that the tolerance on some things should be available in different levels. 100% are in default within the MC is something that is ideal and include hard to do. However we can provide 80% area in the MC examination. That is, at least 80% of the total points meet the standard of measurement. The rest can be outside the MC limits have been determined. Larger percentage will certainly be better for the product.
Location
Determine which of the components in a product that have the most important function in terms of structure. Although we use the 80% rule area, but if there is 20% most important areas (feet, order frame desk, etc.) should be re-checked whether the problem is on almost every product in the production or only on a few items. Experience and instinct played a big enough here. MC curve in the picture above you can see when the average MC of all measurement points was between 2 red lines (80%) then you do not have to worry about the quality of the product. Some points that are beyond the red line are the remaining percentage is around 20%.

Author : Draker_Ster is the owner of the website which specialists in offering indoor and outdoor furniture.