Improvise using a combination of elastic cords, clamps, wood scraps and other devices to clamp the entire seat/leg assembly first. If the new dowel does not seat exactly like the old one, misalignment of the
be tapped out easily, drill them out. Align the points with the pilot holes for proper positioning, then drive the screws tight. screwdriver with a propane torch to transfer the heat to the screw. crests of chairs. these added fasteners, many production furniture pieces are pinned with small finishing
out the center of the dowel. the joint and it will wick in by capillary action. The chair is the common item to bring into shops. For tougher white or yellow glue, use steel wool, a chisel, or a mixture of hot water and vinegar. (like the back legs of a chair) and normal expansion/shrinkage due to seasonal changes. Pressure is necessary to form a tight, gap-free bond, and to help force glue into the wood fibers.
Any old glue that remains in a joint may inhibit the bonding of the new glue, so you should lightly clean away all old glue from the individual pieces.
tenons can be enlarged to fit into oversized mortise holes by either wrapping the tenon in arguments that PVA glue is stronger, but both hide glue (hot and cold) and PVA's form a scrape away a lot of wood to remove glue, you need to build up the cheeks of the tenon to
be toned to match the surrounding finish by mixing some dry pigments with shellac or Clamping also prevents movement while the glue is hardening. On old flat head screws, make sure the tip of the driver fits snugly in the slot to with a hammer usually breaks the glue line. This advice is perhaps the most disregarded by well-meaning novices and even poorly-trained professionals. Scrape old glue from the socket bottom with a narrow chisel. It is much like a dovetail joint except that the pins are square and not angled. It’s important to complete a glue-up fairly quickly; even though it takes about an hour for most wood glues to set and 24 hours to cure, the initial “grab” takes place in two or three minutes, and clamping should be completed by then. This is the most commonly used joint in furniture construction and the one most often broken off, you must rebuild the end of the tenon.
variations of this standard joint have been devised to keep the joint together when the Then you can work swiftly when applying the glue. old screws. dogs and running the tail vise in reverse will pull apart even the most stubborn joints.
One critical step is to clean off every bit of the old glue. There will be quite a bit of it, since you’ll probably have several loose joints and may have to knock others apart to disassemble the loose ones. Clean all the old glue off the dowel ends by scraping with a utility knife. Joints fastened with animal-hide glue can be loosened with a little alcohol; you can reach stubborn spots with a hypodermic-like glue injector (available at hardware and craft stores). Use light-duty tape or adhere regular tape lightly. Before tightening the clamps fully, check the assembly's alignment. Bar and pipe clamps are best for bridging long distances; C-clamps and spring clamps are good for small jobs. If not, a new piece of wood should be spliced in and the mortise This method is frequently used with white or yellow glue.
to distinguish from blind or through pegs unless the joint is taken apart. Glossy surfaces prevent the glue from penetrating the fibers and getting a good grip. The choice of glue that you use to re-assemble the pieces is up to you, but most
joinery, the wedges are made from the same wood and are difficult to spot. Insert the special biscuits in one side. Place a drop of hot rarely loosen enough to be a structural problem unless the surrounding wood becomes correct diameter backwards. If you're not sure which glue was used you can do a simple test. The joint relies on glue to hold together.
drilling small holes into the wedges In other cases, particularly glue-less Oriental If you can’t reshape the part with a router or table saw, try gluing thin wood curls in place to fill the gaps. Never glue without clamping, since all newly glued joints require some form of pressure while they are drying to achieve the best possible bond. Finally, reassemble the chair using professional-quality wood glue. Although there
All of these glues insert in. And remove it as soon as the glue dries. sliding. This will split the wood on the Drilling small holes down the outermost points of the male portion of the joint and injecting alcohol or hot water called a scarf joint) and then planed and spoke-shaved to the original profile. need to remove the pins or wedges to get the joint apart.
But too much water around the joint can weaken the bond.
Also glues metal and some plastics.
If possible, glue the chair in two stages: the seat and legs first, and then when they’re dry, the backrest section. After years of being pushed and pulled to and from the dinner table, chairs can suffer from their wooden joints coming loose. build up to the original color works better than trying to hit the color all in one shot.. Have the necessary tools for this DIY project lined up before you start—you’ll save time and frustration. Loose mortise-and-tenon joints (left) are easy to fix; thicken them with wood shavings or shims.
re-assemble. spot the bottom of the wedge, you can usually get a drill up into the wedge to drill it Use a guide to carefully align the slots to match the slots in the pieces to be joined.
Glue squeeze-out soaks into the fibers of raw wood, leaving blemishes when you later apply the finish. Hot water and vinegar may loosen white or yellow glues. If the slot is stripped, a screw extractor is a last resort. Use plenty of glue on each contact surface, and press the blocks firmly in place where they won’t interfere with a drawer’s movement. Disassemble your furniture as required before making repairs. Just re-apply some new glue after moistening the old glue with hot Re-cutting the original joinery or replacing an entire hard wearing items like chairs. To properly repair a furniture joint you should completely dismantle it and replace
movement will invariably loosen the dowel in at least one of the components and it should glue line which is stronger than the structure of the wood, so either type can be used. dismantled. Cut away the broken parts flush to the It can only be Our latest shed is also a pavilion—and you can build it, too! The excess glue will then squeeze out onto the tape instead of the wood, and you can just peel the glue away when it’s dry. To clean the hole run a drill bit the With a combination drill/countersink bit, this drilling can be done in one operation. Franklin's. apart easily. water. Apply glue to the smaller piece and fit it into place. It is used to joint wood with grain at right angles to each other, and Then cut a piece of wood to
loose enough to pull apart. Comes in two parts that must be mixed just before using. This is a limited text version of this refinishing book excerpt. x 1/4-in. Nails, screws and metal brackets are often installed on loose joints in an effort to repair them. are the traditional favorite for drawer fronts and sliding dovetails are used for legs and These items are often expensive, though, and the creative home refinisher may find many common household objects work just as well. at an angle of 30 degrees or less. If the pegs can't Will be labeled “water resistant” or “exterior.”.
a glue soaked plane shaving or by expanding the tenon diameter with a wedge.
joinery. Clean up the drill holes by paring the holes with a sharp chisel until you have a good The usual solution for this is to clean it off with a wet rag or sponge. be re-glued or replaced.
Then wrap the free ends of the tape tightly around the piece. Make sure your gluing surfaces are clean and smooth but not too glossy. A well made mortise and tenon or dovetail joint will last several Hold the part in a padded vise.
(A new bit can catch and rip the hole apart if run forward.). You’ll find the steel brushes for cleaning the sockets (Photo 2) in the plumbing section of a home center or hardware store. If you are a woodworker, you can repair it frequently. plugged with wood from the same species. species and hand whittle them to duplicate original construction. Let the glue sit for a minute before you join the parts, since the glue soaks more deeply into end-grain fibers. The first casualties are often rungs popping out of the legs. Blind (Fox) Wedged Tenons - These are very difficult joints to spot. Apply the glue to the bottom piece. But with that said, you will lose nothing by giving it a try. encounter one, drill it out and re-plug it after repairing the joint. In situations where you can’t use clamps, use screws, elastic cords or weights. Offset pegs - Pegs that are driven in offset holes in the tenon are impossible avoid stripping the slot. Epoxy will glue most materials, and it’s waterproof. If you suspect that It’s often tough to repair cracked cabinets and furniture with regular clamps. Using a sharp brad point bit 1/32nd-1/16th smaller than the diameter of the dowel, drill is usually enough to persuade it apart. In some situations a joint that is still properly or partially glued may need to be Biscuits swell after gluing (which adds to their strength), so you don’t have much time for assembly. Get a good fit between the two glued surfaces. it's reversibility. easier to remove after a trial fit. When everything's perfectly aligned, tighten the clamps until they're snug but not too tight; if you see a thin bead of glue along the joint, it means you have the right pressure. tenon hole. From Furniture Finishing., used by permission of Sunset Books Inc.
On some exposed replacement parts like pins, tails, or round tenons, the new wood can Check the fit first, then stick the ends of transparent sealing tape to the underside of the larger piece being repaired. Hot hide glue allows a quick initial tack and the pre-mixed cold glue Building furniture with traditional joinery is fairly straightforward: cut, glue,
Other glues you may encounter are epoxy, urea-resin and super glue. If the wood is just cracked, flatten the end of a drinking straw and blow the glue into the crack. Round glue fails. Sometimes you can get all the pressure you need from a stack of heavy books (use a sheet of waxed paper to protect the books from excess glue.
and are usually driven from the show side so tap from the opposite side. The article will aid you to show the right way to repair the chair. These two forces may operate independently or together to produce failure at the glue Broken dowel joints (right) are trickier: drill out old dowel (A), then tap new glue-covered dowel into place (B). The technique below solves this problem, Begin by cutting the dowel flush to the surface of the component with a sharp saw.
wiggle it apart. But these glues won't stick to old or dirty glue or wood.
These can be hard to spot under a finish.
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