Graining Wooden Furniture

Hand graining also requires special skills, knowledge of woods, and specific tools to achieve a finish which is indistinguishable from the real thing and was once the pride of traditional craftsmen.

However, you can get a pretty good match by using Gransorbian, which is a kind of relief papier mache, moulded in patterns of different kinds of timber. The relief is printed on to the wood. You can also get a fair imitation of a pine surface by using a dry-brush process.

For this you need ground coats and scumbles – best obtained from builders’ merchants, supplying professional décorators.

Select the ground coat of colour similar to that of the lightest parts of the wood being imitated and brush this all over the prepared surface. When dry, dab on the scumble, which should match the darkest parts in colour, with a brush. While this is still wet, draw a dry brush along in the direction of the grain of the wood with a ‘wiggling’ motion.

Any imperfections can be made to look like knots by wrapping a cloth round your thumb and twisting it on the surface. Examine a piece of pine to see how the grain lines run round a knot, and the effect will look more natural. Leave to dry and then protect the surface with two or three coats of varnish.

To simulate a join in the surface, apply masking tape where you require the join to show and draw the brush diagonally away from it. Peel off the tape, leave to dry and apply the tape to the other side.

To effect a matching design for a quartered panel, divide the panel in half downwards and across with a pencil. Draw just the main features of the top left-hand panel on a sheet of paper and make three tracings of them.

Perforate here and there along the lines of the tracings. Turn one tracing over and, laying it over the top right-hand quarter, ‘pounce’ coloured pigment or chalk through a pad, or apply a dryish colour with a cloth to show the main lines of the design in reverse.

Turn the second tracing upside down for the bottom left-hand quarter, and the third tracing over and upside down for the bottom right-hand quarter. Now you will have guide lines for brushing out the scumble.

Laminboard, blockboard and chipboard are treated in the same way as wood, but some chipboards need considerable filling and sealing to present a smooth surface. As hardboard is extremely porous, do not use ordinary wood primer because too much oil will be soaked up. Apply hard-board primer or well-thinned emulsion paint before finishing with oil paint.

Garden furniture is best treated with teak oil or with a varnish which resists the effects of ultra-violet rays.

10. November 2011 by admin
Categories: Handyman Tips | Tags: , , , , , , , , , | Comments Off on Graining Wooden Furniture

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