PDF Publication Title:
Text from PDF Page: 004
BASIC FACTS ON DRYING LUMBER Why Dry Lumber? Fresh cut lumber contains a great deal of water. If the water is not removed, the lumber can’t be used to produce a high quality finished product. Properly dried lumber sells for a higher price and is much easier to work with than lumber that hasn’t been dried. When lumber is dried right, it machines better, glues better, and finishes better. Drying also improves the strength of the lumber, kills infestations, hardens pitch, preserves color, reduces weight and controls shrinkage. Lumber that is not dried under controlled conditions is prone to warping, staining, and other degrade that diminishes its selling price and workability. With a Nyle dehumidification kiln, successful lumber drying for better profitability is easy and affordable for virtually any size operation. How Much Water Is In Lumber? A lot. In fact, some species of wood are more than half water in terms of their weight when they’re fresh cut. Moisture content in lumber is generally expressed as a percentage of the dry weight. For example, if a fresh cut board weighs five pounds per board foot, then weighs 3 pounds per board foot after it’s been dried in an oven to 0% moisture content, that means it had two pounds of water in every board foot. Two pounds of water per board foot compared to the lumber’s dry weight of three pounds per board foot is a ratio of 2:3—so the lumber has a moisture content of 2/3, or 67%. That’s similar to oak, for example, which is usually about 68% moisture content when fresh cut. It’s really astounding how much water has to be removed from wood to make it suitable for finished products. Take the example of a truckload of oak. Fresh cut oak weighs about 5.4 pounds per board foot. So a truckload of 8,000 board feet weighs about 43,560 pounds—just under 22 tons. Once you remove enough water to get the oak down to a moisture content of 6%-8%, it weighs about 3.5 pounds per board foot. So that truckload now weighs 28,000 pounds, or about 14 tons. That means that to completely dry a truckload of 8,000 board feet of oak, you have to remove 15,560 pounds of water—almost eight tons! That’s why choosing the right drying system and using the proper method are so important. 4PDF Image | INTRODUCTION TO KILN DRYING
PDF Search Title:
INTRODUCTION TO KILN DRYINGOriginal File Name Searched:
KilnDrying.pdfDIY PDF Search: Google It | Yahoo | Bing
5,000 BF Shipping Container Lumber Dry Kiln For Quality Lumber The 5,000 BF container kiln consists of one 40 foot high-cube aluminum shipping container... More Info
Shipping Container Lumber Dry Kilns by Global Energy Global Energy designed and developed the container kiln back in 1991. The purpose is to give access to portable sawmill owners, furniture makers, and small business the value added profit of dry kiln lumber and quality hardwoods... More Info
Vacuum Kiln Conversion Kit for Lumber and Wood Dry Kilns Convert your existing conventional dry kiln into a fast drying vacuum kiln. Similar to vacuum bagging in the boat building and aircraft industry, we have come up with a proprietary process which allows you to build a very simple vacuum kiln at a fraction of the price, and without the intensive conventional metal chamber structure... More Info
Vacuum Pump Cart System for Bagging Clamping Wood Drying and more Vacuum Cart with 2HP Pump and Dual Pistons with multiple multiplex vacuum ports and liquid reservoir... More Info
Vacuum Bagging Basics Vacuum bagging is a method of clamping, which has traditionally been used in the composites industry, but can also be used for vacuum drying materials, including wood products... More Info
CONTACT TEL: 608-238-6001 Email: greg@globalmicroturbine.com (Standard Web Page)