PDF Publication Title:
Text from PDF Page: 065
Figure 35. A sprayer was used to apply end coat to these oak boards, but the end coating wasn’t applied carefully or heavily enough to be very effective. Notice the overspray and the many end checks. The stickers weren’t placed close to the board ends either and that would have also helped to minimize the loss due to end checks. Some years ago I visited a company that does a lot of custom sawing and drying and noticed that they had a stack of non-end coated black walnut on their air drying yard. The amount of end checking made an impression on me because the checks were severe enough that many boards would have had to be trimmed back 6” from each end; I think the boards were ten feet long, so that amounted to a 10% loss! I remember asking the yard manager why the boards weren’t end coated and he told me that “the customer didn’t want to pay for it.” I still think about what I saw; for one thing, I can’t imagine why the yard manager didn’t pointedly discuss the likelihood of drying degrade with the customer, and I also can’t imagine the customer’s reaction when he picked up the lumber. Surely it would have made the company look more professional had they priced the drying costs to include end coating. TAG THE LOGS. This is optional, but consider putting a tag on one end of each log for inventory control. Recordkeeping will let you keep track of where and when you got each log, how much you paid for it, what you originally scaled it out as, how many board feet and what grade of lumber you actually ended up with, and so forth. Maintaining this information takes time, but it helps you analyze whether you’re making or losing money on the logs you buy and will help you make better decisions in the future. It can also help you to identify where your best logs are coming from and vice-versa. SAW AND STACK YOUR LUMBER. Treat logs like fresh fruit and use a FIFO (First In, First Out) handling procedure whenever possible. Logs will degrade over time and attract both insects and fungi, so minimize your inventory and saw, stack and dry the lumber as soon as possible. Proper stacking is critical if you want to get flat lumber. You have to stack the lumber such that air can flow between the boards, and wooden spacers called stickers or stacking sticks are used for this purpose. Stickers are generally 3⁄4” thick for hardwood lumber, and it’s important for them to all be the same thickness so that your lumber stacks stay flat. Stickers are sometimes square, but more often they are rectangular (3⁄4’ x 11⁄4” or so) to 65PDF Image | HARDWOOD DRY KILN OPERATION A MANUAL FOR OPERATORS OF SMALL DRY KILNS
PDF Search Title:
HARDWOOD DRY KILN OPERATION A MANUAL FOR OPERATORS OF SMALL DRY KILNSOriginal File Name Searched:
FOR128.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)