Ifia

Aniline Dye Safety

Q/ want to use aniline dye to make a maple chest of drawers the color of red mahogany. Are aniline dyes safe to use?

Fred Reich Boston, MA

A The answer is a qualified yes. All aniline dyes are synthesized from the ehemieal aniline, whieh is derived from petroleum or eoal tar. Certain aniline dyes, especially those containing benzidine, have been linked to bladder cancer, but none of the commonly available aniline dyes used for wood contain benzidine or any other known carcinogen.

Nevertheless, you should treat all aniline dyes with caution because we don't yet know everything about these colorants. Avoid direct contact with dyes by wearing gloves and a particle mask when working with the dye powders, and wearing gloves when working with the dissolved stain.

The area of greatest potential concern is using aniline dyes on children's loys. Most dye companies recommend you use Food, Drug and Cosmetic (FDC) grade dyes when the dye might come in contact with someone's mouth (as it would if a child chewed through the finish). F1>C dyes (sold in supermarkets as food colors) are safe, however they will fade much quicker than aniline dyes.

Boh Floxncr Finishing consultant Norman, OK (Editor's note: AW is investigating the aniline dye safety issue carefully and we'll report new evidence as we receive it. If you have any information, we'd like to know about it.)

Sharpening Scraper Planes

Q/ recently acquired an antique Stanley So. 12 scraper plane. Could you explain bow to sharpen and use this tool properly?

Wayne Big clow Jefferson City, MO

A The No. 12"/2, first called Bailey s Patent Adjustable Veneer Scraper, and after 1912 simply Scraper Plane, has a thicker iron than those used in modem cabinet scrapers, yet it's sharpened in much the same way. First clamp the iron in a vise and file a 45° bevel with a fiat bastard mill file until you've raised a burr on the back of the iron. The surface of the bevel should be flat and the cutting edge straight and square to the sides.

Next, use a fine carborundum or other finishing stone to refine the surface of both the bevel and the back and to remove any traces of the burr.

0 0

Post a comment