Chair Repair, a restorer's dream job. Part three.

Now all the parts are dry, check them over to see if there is any old glue lumps you missed, if there are these will generally pick off. Also have a good look at the tenons and mortises for any splits or other damage. Everything ok? Then you are ready to start gluing up. Glue-up, is probably the most stressful part of furniture making or restoration, get it wrong and at best its back to clean-up at worst, we wont even think about that. Here would be a realy good place to talk over procedure; yes it is dull, just like all good advice. First a word about cramps and glue. You will need at least two cramps possibly more. The webbing strap type, with a ratchet, are an excellent choice for chairs, as these will adapt to different shapes and angles and are relatively inexpensive. I’ve already mentioned hide glue, which is essential for antique repair. You may be put off and not equipped with a double wall glue pot for the traditional hot melt type. Also, the short open time may prove tricky if you are unused to working with it. Luckily help is at hand in the form of “Franklins Liquid Hide Glue”, which is exactly the same thing, but chemically retarded. Second, spend a little time planning the glue-up; push all the parts together for a dry dummy run. Use the clamps to pull-up the joints and check if they close tightly, you will probably need to adjust the cramps to achieve this. If you are using conventional screw cramps you are going to need to make shaped wooden blocks to protect the chair and also to ensure that the line of force is directly in line with the screw. Don’t consider time spent on this as time lost, it is most definitely time well saved.

Ok let’s get on with the interesting bit; commence with the back of the chair, working in the reverse order to that of dismantling. You will need a cramp or two for this. One placed about a third down from the top of the back leg, with the other about a third up from the bottom, this should do it. However, check that this will evenly pull up the joints without distortion. Check the back for overall squareness. This is important and will affect the squarness of the whole chair. Unhelpfully most chairs have contoured parts, or the parts are set at obtuse angles. This makes it impossible, or at least extremely difficult, to check the angle using a square. I get round this by using my eye and if you trust your own eyes you will find them more reliable than you probably think. However, if you are unused to using your judgement in this way, to begin with you will find it helpful to have a datum to work from. Stand the chair against an upright, which you know to be vertical, the edge of a closed door, for example. If you judge the back to be yawning in one direction or another, a little pressure exerted across corners will generally rectify. Do this by placing one leg of the chair back on the ground and push down from above on the other. Which leg you chose would, of course, depend on which direction the chair is yawning. Keep checking until you are satisfied.

Continuing with the chair back, apply a coat of glue to both surfaces of the joint, a generous amount in the mortise, with just enough to wet the surface of the tenon. You don’t want to apply an excessive amount of glue, but at the same time you want to make sure the joint isn’t glue starved. However, don’t apply glue to the shoulders of tenons. This will add nothing to the strength of the joint and only result in a messy squeeze out that shall need cleaning up. All excess glue, by the way, will wash off with a cloth and a little warm water. Push the joints together; hand pressure is all that should be needed. However, you will need to cramp overnight or longer, while the glue sets. Most glue takes a few days to realise full strength and hide glue is not exception. So please resist any temptation to “test” your work for a day or two at least.

Once the chair back has been successfully tackled you will discover the front fairly plain sailing. If the front legs are joined with stretchers as well as a seat rail, like, for instance a Shaker Chair, I glue this up as a separate unit in a similar way to the back. Of course, making sure all is square in the same manner as before. If you have enough clamps the front assembly can be glued at the same time as the back. If, on the other hand, the chair doesn’t have stretchers directly between the front legs, as with Georgian style chairs, or without stretchers at all, as for example a Queen Anne, it is better to glue up all in one go. Whichever way the front legs are assembled proceed as follows: Lay the back down flat, mortised side up and apply glue to the inside surface of mortises, including those for the stretchers if present. Some types of stretcher will now need assembling in an H format. Now glue all the mating tennons of the side rails and push home into the mortises. Whether or not already assembled apply glue in the same manner to all the mortises of the front legs. Join the front legs together with the front rail. Apply a small amount of glue to the remaining tennons of the rails and stretchers now standing upright from the back. You could simply bring the joints together. However, I always lay the front assemble flat and lift and reverse the chair back, bringing it down onto the front legs. This stops any glue running out of the mortise while you are aligning the joints. Stand the chair upright and place one of your webbing clamps around the back and front legs at the height of the seat rails. Have the ratchet at the chair front, along the line of the front rail. Take up slack in the webbing with the ratchet ….. Now check that the webbing is central to the joints so that the joint pulls up evenly. If all is in place give a few more clicks on the ratchet to pull the joints up tight. Proceed in the same way for the stretchers if present. Check alignment of your chair by placing on a flat surface and checking all four legs are resting evenly and that the chair isn’t rocking. You may not be able to achieve perfect results here for a number of reasons, such as wear or distortion of parts, therefore you may find it necessary to build up or trim one of the legs.

If your chair is the Windsor type you should reassemble, by placing the seat plank upside down and tap home the legs into the round mortises with a rubber or wooden mallet. Of course remembering to replace any stretchers as you go. The only cramping that may be necessary is around the legs to close and hold the joints on the stretchers. Once the legs are attached you can flip over and reassemble the upper part of the chair. You should be able to complete the whole operation in one go.

The upholstery for your chair is too varied a subject to cover in a letter like this, although it can be very satisfying and enjoyable to do this yourself. I would suggest you buy a book on the subject in order to achieve the best results; one I can recommend is ‘Upholstery a practical guide’ by Desmond Gaston. Harper Collins ISBN 0 00 411671 2

I goint to write a post on polishing soon so you will be able to add that finishing touch to your expertly restored chair.