· Always work from established Datum edges, as this will ensure greater accuracy
· When marking out for cutting always cut to the outside of the line to allow for finished filing
· If an internal profile is required always cut to the inside of the line to allow for finish filing
· Circles and Radii can be marked out using steel dividers and then cut and filed to establish the correct profile (Radii can be checked using radius gauges)
· Pitch Circle Diameters (PCD) are a series of holes marked out around a given diameter. The holes can are generally equally spaced (angularly) and reference books such as a Zeus book can be used to establish the hole positions
· Holes on a linear axis can be marked out using either ABSOLUTE or INCREMENTAL
· Absolute dimensions are marked from a datum edge to a singular point meaning that all holes originate from the DATUM
· Incremental dimensions are marked from point to point/hole to hole (using this method means that there is a greater chance of error)
· Angular dimensions can be marked out using a Vernier Protractor or a Combination Square
· When producing tapped holes, allowance should be made for the Tap and we can use reference charts to give us the relevant drill size. For example an M6x1.0 internal thread requires a 5mm drilled hole.
The M before a thread size means Metric and the figure i.e. 1.0 is the pitch
You do this to determine which parts will stay and which will go. This is the best way to keep track of the work that will be done.
Common methods for holding and supporting a workpiece during marking out activities include using clamps, vices, magnetic bases, and jigs. Equipment like surface plates, height gauges, and squares can be used to ensure accurate positioning and marking of the workpiece. Jigs and fixtures can also be custom-made to securely hold and support the workpiece during marking out.
Common methods include using clamps, vices, magnetic bases, or specialized jigs/fixtures to secure the workpiece in place. In some cases, workpieces may be held by hand or using a bench stop for marking out purposes. The choice of method will depend on the size, shape, and material of the workpiece being marked out.
The main advantages of using a marking gauge over a pencil and ruler is that you can repeat the settings on every workpiece that you mark out. (i.e. you can make an identical mark on each of the pieces you are working with).
In fiction, use of conventions leads to expectations.
To efficiently remove broken taps from a workpiece, you can use a tap extractor tool. This tool is designed to grip onto the broken tap and allow you to twist and remove it from the workpiece. Be sure to use the appropriate size tap extractor for the broken tap and follow the tool's instructions carefully to avoid causing further damage to the workpiece.
A marking gauge is used for marking out lines to be cut.
Smoothening sharp bits of material of a workpiece.
To safely and effectively attach a workpiece to a lathe faceplate for turning operations, follow these steps: Clean both the workpiece and the faceplate to ensure a secure grip. Use suitable fasteners, such as screws or bolts, to attach the workpiece to the faceplate. Make sure the workpiece is securely tightened to prevent any movement during turning. Check for proper alignment and balance before starting the lathe. Use appropriate safety gear, such as goggles and gloves, during the turning operation.
To effectively remove a broken screw extractor from a workpiece, you can try using a left-handed drill bit to drill into the extractor and then use a screw extractor or pliers to remove it. Another method is to carefully use a Dremel tool to cut a slot into the extractor and then use a flathead screwdriver to turn and remove it. Be patient and work slowly to avoid damaging the workpiece.
1) The methods for holding a securing a work piece during marking out activities are making sure that the piece is secured to a vice firmly so it will not move when marking it, or if you are using a Vernier height gauge, make sure you are holding it securely against the angle plate and assure it is flat against the base so it is accurate when marking it.
I have special clamps similar to Vice Grips for this.