Woodworker's Journal 2001-25-1, страница 60
What is transfer efficiency? Transfer efficiency measures what percentage of the finish actually ends up on the furniture. A standard high pressure spray gun has a 25 percent transfer efficiency. That means one quarter of what you put into the cup of the gun ends up on the wood, and the other three quarters either misses or bounces off the wood. An HVLP gun, which delivers a more gentle spray, may have a transfer efficiency of up to 65 percent, Our 2-iJS-page full-color woodworking tools catalog has the widesl selection of hand To Shop online Or a tools on the market. It is 15 (includes a IS coupon) or free with purchase. otrler a catalog, visit ff WWW.IeeVaHey.COITI | jLeeValley& oeratas* 0^1-800-871-8158 12 East Rrver Street. Ogctensburg. N.Y. 13669 or fax 1-800-513"7885 Type of Compressor Portable Transfer Efficiency Versatility Standard small air limited 25% or lower large air 45% to 65% Turbine HVLP turbine medium Types of Spray Guns: Standard There are three common types of spray guns sold to woodworkers. Two of them operate in conjunction with a compressor, and the third is powered by a turbine. Up unUl the 1980s, the standard spray gun in the field was one that used high pressure compressed air. A standard gun is highly versatile and will spray any material, thick or thin, merely by changing the air pressure going into the gun and the gun's settings. It uses a relaUvely small volume of compressed air and will work with even a small air compressor. Since it is attached to the compressor via a 3/8" air hose, it is only as portable as the compressor and limited by the length of the hose. Standard guns have a fairly low transfer efficiency at 25 percent or less and need a strong, efficient spray booth to keep overspray from becoming a problem. This is the least expensive of the three types of guns, and is a good option if you own a compressor and want to spray several different types of materials. continues on page 62... leevalley.com is a real page turner just like our catalog Online shopping. Thousands of unique, qualify woodworking tools, books, gifts & accessories. Just one of our unique products-Yeritas Dmiiail Saw Guide System Hand-cut dovetails remain the mark of the skilled cabinetmaker. This guide and saw system lets amateurs achieve professional results and the seasoned expert to produce dovetail joints more quickh and with less effort. The 1:8 dovetail guidelthe traditional ratio for hardwood) clamps in position to hold the saw at the correct place and the correct angle for a perfect cut, Vi" rare-earth magnets " imbedded in the aluminum guide and covered with a layer of low-friction I HW plastic keep the saw perfectly aligned as you ait. You just need to chop out waste from the tails and pins. Clamps onto material1. to I " thick. Our dovetail saw has been specifically designed for use with our dovetail guide. The 22 tpi blade is 2"xSlA" long and has 0.005"of sei per tooth. The dozuki tooth form is effective in both crosscuts and rip cuts. Weil made system. A 1:6 guide (for softwood) is also available. OSTOJ.OI Veritas^ 1:8 Guide and Saw $35.95 n.y -warn*. km ax» a- Type of Gun Conversion HVLP (Circle No 53 on PRODUCT INFORMATION farm) 60 February 2001 Wood wo rker's Jo u mat |
