Popular Woodworking 2000-06 № 115, страница 8
ferent micron sizes involved. Sawdust looks bad in a shop, but fine airborne dust is more dangerous to the lungs. One point, if I may: the section on fan speed is erroneous on two counts. You state, "Static pressure varies as a square of the fan speed. If the speed is halved, static pressure capability is reduced by V4." I think you meant to 1/,4. If the fan speed were 4 rpm, the square would be 16. If the speed is halved it would be 2 rpm and the square is 4. If we follow your logic, reducing the static pressure "by" V4, you would have: 16 minus [V4 x 16] = 12. This is incorrect. It should be 16 x 1/4=4. You make the same error in the next paragraph, discussing power required varying as the cube of the fan speed, using the word "by" when it should be "to." Gil Weiss Stamford, Connecticut Don't Throw Away Those Tennis Shoes, Mount Them to the Wall I was just reading my latest issue of Popular Woodworking and I saw a really neat recycling idea that perhaps your readers had not noticed. On page 63 of the February 2000 issue you can see in the bottom right corner how an old running shoe is being used as a holster for a drill. This should be placed in your "Tricks of the Trade" column. This trick could reduce the number of shoes we woodworkers throw out by half. (OK, maybe not, but every bit helps.) Kevin Stroet Smithers, British Columbia We published that trick in 1995 and in a collection of the best of the Tricks of the Trade in our 100th issue in 1998. People laugh when they see the shoes on the wall in our shop, but after the hysterics are over they realize it is a great idea. PW Save Money— saw your own lumber. Make Money—saw for others. •Cut logs up to 28" D.xll'L. • Extra bed sections permit longer lengths. • Easily transportable. ^ • Video available. "MCC^* Jzt* Wood-Mizer ® og- NumberOne in Worldwide Sawmill Sales 8180 W 10th St Dept DF46 Indianapolis, IN 46214 LT15 Personal Sawmill 1-800-553-0219 Circle #132 on Resource Directory Coupon CORRECTIONS AND CLARIFICATIONS In the September 1999 issue (#110) there is one line that's off in "The Little Shop Mark II" article. On page 48 under "Drawers and Doors," the third sentence should read:"Use a '/V x 'A" rabbet cut on the drawer sides...." |
