Woodworker's Journal 1983-7-6, страница 18

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Restoring Antiques

Some Repair Hints

by John W.Olson

While restoring a French Provincial coffee table, I realized that it would be necessary to replace a few missing parts. One "doe" foot was missing as well as a piece of the "piecrust" molding that formed a border around the table.

I tackled the molding first. The first step required that I make a matching blank from walnut. No effort was made to carve the blank and it was made somewhat thicker, longer and higher than was really necessary. The base of the blank was cut so that it leaned outward at approximately sixty degrees and the ends were tapered to form a scarf joint with the adjacent piece. The faying surfaces of the joints were then carefully fitted and the piece clamped in place for a trial fit. The trial fit is a most important procedure in any repair or building project in which first class work is desired. Any small errors become immediately apparent and they can be corrected before final assembly,

It's time consuming and tedious to make a part, glue it in place, and then wait for it to dry before starting the next. I prefer to make all the parts, then assemble them at the same time. This procedure saves considerable time. With this in mind, I set the blank aside to be glued in place with the foot.

Replacing the missing foot followed the same procedure as was used for the molding. An oversized blank was prepared paying special attention to the faying surfaces within the scarf joint and to the angle of the scarf so that the whole foot would fall within the repair piece. A dowel pin, used to add strength, keeps the block from sliding around as the joint is

clamped. To place a dowel in the desired position within a repair such as this is easy since the only face that must fit perfectly is the one containing the dowel. Fitting an oversized block and then carving the missing piece is far easier than trying to make a carved piece to fit perfectly.

Both the molding and the foot blanks were then glued in place with epoxy glue. For best results an epoxy joint should not be squeezed too tight. A definite glue line will make a much stronger joint. Epoxy requires at least twenty-four hours to reach a moderate strength. In cold weather (when temperatures are below seventy degrees), it may take several days to a week, sometimes even longer.

I'm not going to try to tell you how to carve matching pieces. There are many good books on wood carving and they can cover the subject in greater detail than I can in this column. Suffice it to say that when preparing the blank you should try to match the grain. Also, make sure that the blanks are large enough and that the scarf is oriented so that all of the final carving will fall within the block. Wvj