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Marking out Steps

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Marking out Steps Marking out Steps: The exam has begun and you have decided Piece A will be your first piece to mark out. Every piece that is marked out will follow the exact same steps. If you follow these steps you will never miss any section of the mark scheme. When you are marking out Vertical Pieces we read out measurements from Top to Bottom. When you are marking out Horizontal Pieces we read out measurements from Left to Right. The 4 steps of marking out are outline below. Follow each step for instant success Step One: Joint Locations In this step you are just isolating the locations of the joints, ie meaning where piece A joins to piece E. Common locations are typically 12, 18 and 40mm. Ensure to only mark joint locations and nothing else Step Two: Mark out Joints This is step which has already been sorted early in the exam, take each individual joint and mark out using the tri square, mortise gauge and ruler. Typical Mortise gauge sizes for joints are typically 6mm, 9mm and 10mm, Step Three: Look for Drilling Look at the current piece and check for drilling. Where there is drilling mark the exact location and draw a freehand circle around the point. Step Four: Shaping Shaping differs from Piece to Piece. Some just involve using a set square to mark an angle. Shaping should not take very long to mark out and it is usually only a few marks going for shaping. Again if you follow these exact step and apply them to each piece, then every piece will be marked out accurately Tomás Callanan M Marking Out of Piece A When marking out a Vertical Piece always read the drawing from Top to Bottom Joint Location: Measure 18mm (Use width of Piece C) to find location of Joint 1. Measure 30mm then a further 40mm (Use width of Piece E) to find the location of Joint 2 Measure 124mm then a further 18mm (Use width of Piece D) Marking Out: Mark Joint 1 first. Set your mortise gauge to 11mm first to stab a point for a location of a Dovetail. Set the mortise then to 29 (11 + 18) to stab a point for a location of the other end of the dovetail. Ensure same procedure is complete on the back. Use the dovetail template to get the angle of the joint. Repeat procedure on the back Mark Joint 2 next. Measure 5mm either side of the 40mm line to find the 30mm gap. Next set the mortise gauge to 8mm and scribe a line both sides of the piece. Then set the mortise gauge to 18mm (8 + 10) and scribe a line both sides. Finally Mark Joint 3. Set the Mortise gauge to 15mm and scribe a line either side of the piece. Then set the mortise gauge to 25mm (15 + 10) and scribe a line either side of the piece. Repeat the procedure on the back of the piece. Check the exploded view for correct position of the XXXX Look for Drilling: Scan through the drawing looking at all views. This piece has no drilling so you move on to step four shaping Shaping Measure down 10mm from under the Joint 3 and draw a line to the bottom left hand corner. For the rest of the shaping find the two points and join the line MARKING OF PIECE A IS NOW COMPLETE Tomás Callanan Marking Out of Piece B When marking out a Vertical Piece always read the drawing from Top to Bottom Joint Location: Since all of Piece A has been marked out we will use the same joint locations to quicken up the marking out procedure. Transfer the 18mm, 40mm and 18mm locations Marking Out: Mark Joint 1 first. Set your mortise gauge to 4mm and scribe a line on the front from either side. So you are left with a gap of 10mm in the middle. Since it is a halving joint we set of mortise gauge to 20mm and again scribe a line from either side, ensure front and back are fully marked out. Mark Joint 2 next. Measure 5mm either side of the 40mm line to find the 30mm gap. Next set the mortise gauge to 8mm and scribe a line both sides of the piece. Then set the mortise gauge to 18mm (8 + 10) and scribe a line both sides. Finally Mark Joint 3. Set the Mortise gauge to 20mm and scribe a line either side of the piece. Since this is a halving joint, one of the 20mm is removed Check the exploded view for correct position of the XXXX Look for Drilling: Scan through the drawing looking at all views. This piece has no drilling so you move on to step four shaping Shaping Measure down 10mm from under the Joint 3 and draw a line to the bottom left hand corner. For the rest of the shaping the point on the right hand side and draw a line to the corner MARKING OF PIECE B IS NOW COMPLETE Tomás Callanan Marking Out of Piece D When marking out a Horizontal Piece always read the drawing from Left to Right Joint Location: Measure 18mm (Use width of Piece A) to find location of Joint 1. Measure 160mm then a further 18mm (Use width of Piece B) to find the location of Joint 2 Marking Out: Mark Joint 1 first. Set your mortise gauge to 15mm and scribe a line all the way around the front, over the end grain and at the back of the piece. Use the same scribing technique for the rest, as show above. Use the gauge on the right hand side of the piece and repeat same procedure Next set the mortise gauge to 25 (15 + 10) and scribe all the way around. Follow the same procedure Mark Joint 2 next. Set the mortise gauge to 20mm and scribe a line either side of the piece to mark out the halving joint Check the exploded view for correct position of the XXXX Look for Drilling: Scan through the drawing looking at all views. This piece has no drilling so you move on to step four shaping Shaping Draw a line from the corner at 45 degrees. Find the remaining two points and join them together to complete the shaping MARKING OF PIECE D IS NOW COMPLETE Tomás Callanan Marking Out of Piece E When marking out a Horizontal Piece always read the drawing from Left to Right Joint Location: As we have marked the locations of Piece D and it is a horizontal piece, we can transfer our measurements of the locations across. Transfer the two 18mm measurement Marking Out: Both joints are marked the exact same way. Set the mortise gauge to 10mm and from the front scribe a line around the end grain and two sides as seen in the image above. Repeat the exact same procedure on the Joint 2. Set the morice gauge to 5mm and scribe a line all the way around the front from both sides so you are left with 30mm left over. Repeat the same procedure on the other Joint 2 Check the exploded view for correct position of the XXXX Look for Drilling: Scan through the drawing looking at all views. This piece has two holes that need to be drilled, 30mm either side of the joints and centred on the piece. Mark the position with a small dot and freehand circle Shaping Get a thumb gauge and draw on a 6 x 6 chamfer on the two edges MARKING OF PIECE E IS NOW COMPLETE Tomás Callanan Marking Out of Piece C When marking out a Horizontal Piece always read the drawing from Left to Right Joint Location: As we have marked the locations of Piece D and it is a horizontal piece, we can transfer our measurements of the locations across. Transfer the two 18mm measurement Marking Out: Mark Joint 2 first this time, measure 4mm either side of the 18mm to ensure you are left with 10mm in the middle, Set the mortise gauge to 20mm and scribe across the piece between the 10 on the front and back of the piece To Mark Joint 1, the dovetail has to be processed fully and then traced onto the end grain as show in the image. The dovetail is marked onto the end grain and the lines are brought down straight for 18mm as shown Check the exploded view for correct position of the XXXX Look for Drilling: Scan through the drawing looking at all views. There is no drilling on this piece so you move onto shaping Shaping Get a 45 degree set square and draw a line from the corner MARKING OF PIECE C IS NOW COMPLETE Tomás Callanan Before you begin Processing You should be aiming to complete the marking out portion of your exam in about 1.5 to 2 Hours depending on the work load. Before you start processing use the marking knife to scribe all lines that you are going to remove to get a clean finish on your cuts. Set yourself a plan of action for your cutting and chiselling, a sample plan is laid out below. In the plan you will see the different cutting techniques required sectioned out into either Standard Cuts or Triangular Cutting. Note no shaping is completed until the end. Standard Cuts: Triangular Cuts: Piece D Joint 2 Piece D Joint 1 Piece C Joint 2 Piece E Joint 1 Piece B Joint 3 Piece E Joint 2 Piece B Joint 1 Piece A Joint 1 Piece C Joint 1 Always start with your standard cuts as they just involve a bench hook and a tenon saw.
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