The most used mid-wood joints are: "angle", the most common; "square", kind of cross; T-shaped, like a gallows, and "miter" or X. They allow to join two pieces of wood (here laid flat) forming a certain angle.These types of assembly are used in carpentry as in carpentry but with larger pieces, with only limited strength, it is recommended that these glued-peg or glued-bolted joints be used to ensure resistance to thrust. he undertakes the same operations: make a notch in each piece of the width of the part to be assembled and a depth equal to half the thickness of the part concerned.
- Meter and pencil
- Industrial chalk
- Wood chisel
- Wood grater
- Paste brush
- Backpack saw
- Half-timbered assembly
- T-wood assembly
- Mid-timbered (or X-shaped) assembly
1. After taking the measure of the thickness of the workpiece, set the truscan to draw a line at half this measurement on the edge of the opposite piece.
2. Keeping the truscan the same setting, draw the depth of the notch to be released by applying the truscan on the edge of the piece. Pinch (crisscross) the thickness of the notch.
3. Depending on the reported width of the opposite piece, draw with a saw the outline of the notch, taking care not to exceed the depth mark. Several saw cuts made inside the demarcated surface may help the subsequent release of the cut with a chisel.
4. Attack the notch clearance by working with the chisel first in the direction of the wood grain at the inner edge of the limiting sawblades.
5. Finish clearing the notch by smoothing its bottom. Use the chisel, the back in contact with the wood by attacking it through the "through the wire" (perpendicular to the axis of the piece). The passage of a flat fine grater is ideal to perfect the finish.
6. After blanking the pieces in place for checking, glue the two notches together (vinyl glue) before fitting them together. The accuracy of the assembly depends on its strength.
7. Help the two pieces fit together by hitting the assembly point with small mallets. Interpose if necessary a martyr hold.
1. Limit to the truscan the depth of the notch on each edge of the pieces facing the pattern made on their facing.
2. At the end of the workpiece for the T-foot, perform precise sawing within the line for removal of the cut.
3. Change the position of the piece to comfortably perform the precise sawing, this time across the part that will clear the notch.
4. Two saw cuts having delineated the notch of the T bar, start to clear it with a chisel. You will finish the release as seen in 5.
5. Glue the surfaces of the two notches and make the interlocking with light mallet strokes. Interpose a wedge to not mark the wood of the assembly. This assembly can also be pegged.
Mid-timbered (or X-shaped) assembly
1. Draw one of the cut delineation lines according to the desired positioning. Use a square that allows a 45° angle pattern or a false square.
2. When placing the opposing piece on the resulting line, find the width of the notch. This process is faster than taking measurements and subject to less risk of error.
3. Determine the depth of the notch by truscan. It must always be half the thickness of the receiving part.
4. Make the saw with the lines of delimitation of the notches respecting the imposed depth determined by the layout.
5. Remove the cut with a chisel. Be careful, if you work in straight wood, avoid attacking beyond the cut with the corner of the chisel by lifting the chips. Otherwise work perpendicular to the notch marks.
6. Insert the assembly (glued or not) as previously seen. In the same way, a dowel (or bolting) is possible to provide reinforcement of the assembly.
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