Popular Woodworking 2005-08 № 149, страница 19
One thing you need to remember about a Danish oil finish is that it is very thin. Therefore it is easily penetrated by water and other liquids, which will probably cause a mark that will be difficult to remove, and anything that scratches the finish will also scratch the wood. — Bob Flexner, contributing editor Why is My Glue Line Becoming More Visible Over Time? In the last couple of years I've noticed - especially on my glued-up table tops - that a year or so after the project is in use I am finding a very fine line of glue at the joints. It almost looks like the wood is shrinking and the glue isn't. None of the j oints has ever opened up, but you can feel them and can pick at them with your fingernail. Can you tell me what I am doing wrong and how to avoid this problem? R.G. Black Red Lake, Ontario What you're experiencing is common with aliphatic resin (yellow or white) glues. When the glue dries, it doesn't form a hard surface, but a flexible plastic film. As the wood expands and contracts, the glue moves with it. This is actually one of the good points of modern glues; if it didn't move, it could eventually fracture, resulting in failure of the joint. There isn't really anything you can do, other than keeping the temperature and relative humidity at a constant level so that seasonal wood movement is kept to a minimum. Other glues, such as hide glue, reactive polyure-thane or epoxy aren't as flexible, and will likely hold up in a tabletop. You might try one of these in your next project. PW — Robert W. Lang, senior editor WRITE TO US Every day we get questions from readers on all subjects about their woodworking. Some are letters; many are e-mail messages. We are more than happy to share our woodworking experience with you by answering your questions or adding some clarity to whatever aspect of the craft you are unsure about. In addition to the hundreds we answer privately every month, we want to share the best questions here with readers. Send your questions via e-mail to popwood@fwpubs.com, or by mail to: Q&A • Popular Woodworking 4700 E. Galbraith Road Cincinnati, OH 45236 popwood.com 17 1 STEVE WALL LUMBER CO. Quality Hardwoods and Woodworking machinery For The Craftsman and Educational institutions _ mmm mmMmmmmmm Ash............ Basswood . Birch.......... Butternut ... Cherry....... Poplar . Cypress.
.UPS........ Specials''. Above prices are for 100 quantities of kilndried rough lumber sold by the Bd. Ft. FOB Mayodan, NC. Call for quantity discounts. Other sizes and grades available. $ 85.00 $ 72.00 $ 89.00 $ 77.00 $110.00 $ 89.00 $100.00 $ 96.00 $ 79.00 $ 72.00 $ 88.00 $100.00 $ 88.00 $ 72.00 $ 80.00 $ 62.00 $ 74.00 _ Above prices are 20 bd. ft. bundles of clear kilndried " lumber 3"-10" wide 3-7 long (Random widths & lengths) Surfaced 2 sides or rough. Delivered UPS prepaid in the Continental U.S. *NOW AVAILABLE* 1 Custom Made Raised Panel Cabinet Doors 4/4 Log Run Walnut . 100 bd. ft. $160 Also Available Exotic Lumber STEVE H. WALL LUMBER CO. BOX 287 MAYODAN, N.C. 27027 336-427-0637 1-800-633-4062 FAX 336-427-7588 Email: wood@walllumber.com Website: www.walllumber.com Send $1.00 For Lumber Catalog Prices Subject to Change Without Notice CIRCLE NO. 148 ON FREE INFORMATION CARD. CIRCLE NO. 112 ON FREE INFORMATION CARD. Walnut |
