Recommendation points
Drilling metal
When drilling a hole in metal with a hand drill, the drill will usually jam. To correct this defect will help a wooden cork, previously driven into the hole..
It is not difficult to drill a hole in a thin metal sheet if it is clamped in a vice along with a wooden block. It is most inconvenient to drill thin metal sheets. Every now and then they strive to break free and injure the driller.
Cut yourself a shovel out of steel with a comfortable handle. Attach the workpiece with clamps to the upper surface of the āshovelā.
Anyone who has tried it knows that a large diameter drill will ābreakā the hole, and it will be uneven. Place a piece of rubber or a rag folded in several layers under the drill and start working. The hole will be flat.
To cut blind holes in a part, you can use a piece of a round file clamped in an electric drill chuck. In order not to damage the back wall of the part, the working end of the file fragment should be slightly rounded on the emery wheel..
Drilling a radial hole in a metal bar or tube is not easy. Especially if youāre trying to do it with a hand drill. This task can be facilitated in this way: drill a hole of the corresponding diameter in a wooden block, insert a tube there and drill calmly, without fear that the drill will slip.
If a blind (blind) hole in a metal part is poured with paraffin, then the thread cut on it will be clean.
Drilling wood
Drilling a large hole in the board at home is very difficult, because the shank of a large drill cannot be clamped in the chuck of a hand drill. A hole with a diameter of 15 to 40 mm can be made using a simple device consisting of a metal rod and a piece of a hacksaw of the right size. Its cutting edges are sharpened at an angle of 45 degrees, inserted into a longitudinal slot previously made in the rod, and soldered or fixed with a wedge, which is driven into the slot.
A sophisticated person will never begin to drill a round log before they securely fix it. He knows that without taking precautions, he most likely will not be able to drill the hole exactly along the intended path, and besides, he may lose the drill..
Place a 1.5-2 cm long spring between the handle and the āsliderā of a hand drill for wood, and even with sharp movements of the āsliderā, a finger will not be pinched, accidentally caught between it and the handle.
When drilling a large hole in wood (20-30 mm), the required drill or perk may not be available. In this case, first drill a hole with a smaller diameter, and then insert a flat steel washer (preferably a new one) into the brace chuck and go through the hole again. This method is also applicable to countersink holes..
If you need to drill many holes in wooden parts at right angles, then take a hardwood cube and make a reference hole in it with great accuracy. And then use this jig in your work like this. The cube put on the drill will also serve as a drill depth limiter.
Lemonade iln beer capsule cap is a good substitute for a drill when you need to drill into wood-
the compass needle holder, then reduce the risk of breaking it when fibrous material or plaster has a hole with a diameter of about 20 mm. Pierce the plug, put it on the bolt, securing with two locknuts, and drill.
It is difficult to make a hole in plywood, it splits. Take a steel tube of the required diameter, sharpen the cutting edge inside with a round file and cut the teeth on it with a triangular file. Insert a wooden cylinder with a nail without a head inside the tube. When working, the end of the nail, protruding 1-2 mm, is the guide.
To prevent scrolling when drilling small parts from sheet material, we advise you to put sandpaper under them.
If you fix a drill with a diameter of 0.8-1.1 mm, you will drill small-diameter holes in wood, PCB, plastic.
There are quite a few devices for cutting out large-diameter holes in sheet material ā plastic, plywood, chipboard, etc. You can use the design: a bracket is bent from a strip of steel 2-3 mm thick, its ends are inserted, and a hole is drilled in the center, then the bracket is put on a bolt with a pre-sawn head. For work, the device is clamped in the chuck of an electric drill.
You can cut a large hole in sheet material in a simple way: clamp a nail in a vice (it will serve as an axis) and a piece of a drill (this will be a cutter). The circle is cut by rotating the sheet around the axis.
A circle of any diameter from plywood can be cut accurately, neatly and quickly using a wooden plank and two sharp nails driven into the plank.
Cutting large diameter circles, for example from thin sheets of plywood, is also a kind of drilling. Admixture drill. Itās easy to make.
A pencil sharpener cutter (sold separately) can be used successfully for boring holes in wood and plastic. It is fixed in the chuck of an electric drill and the edges of the hole are processed..
A potato peeler in the hands of a craftsman is an almost ready-made tool for processing rounded holes in plywood. You just need to sharpen its cutting edge.
When drilling a board or plywood, remove the burrs at the same time, for which string several rings of dense felt on the drill.
A tool that can drill a hole in a do not thread an adjustable cutting knife that is worn on a board that is too thick can be obtained by bending a piece of wire and sharpening a perk blade.
Drilling concrete
It is easier and faster to drill concrete with an asymmetrically sharpened carbide drill. However, we advise you to plan and start holes with a drill with a conventional sharpening..
When drilling a hole in the ceiling, crumbs of concrete and plaster scatter in all directions, fall into the eyes, behind the collar. Make a funnel out of spring wire, wrap it with plastic wrap and slide it over the drill.
If you drill into a concrete or brick wall made in a can of shoe polish, dust will collect in it and not fly into the room..
If you donāt have a winning drill for drilling in concrete, you can replace it with a punch from the āNovoselās Dreamā set. Stuck in a drill chuck, it takes concrete well.
When drilling a hole in concrete or brick, the drill will last longer if it is periodically moistened with water. It is convenient to use an elastic plastic bottle as a water reservoir.
When drilling holes in the wall, it is very difficult to hold the drill in a strictly horizontal position. Attach to her
a small level or a bubble replacing it with electrical tape, and the matter will be greatly simplified.
If it is necessary to drill a through hole in the wall, but the length of the drill is not enough, what should be done? Try to perform this operation in two steps: on one and on the other side of the wall. Having drilled a hole at the intended point, place a magnet in it. Then use the compass to find the drilling point on the opposite side of the wall. The compass needle wonāt go wrong.
Milling
Round knives that have served in an electric shaver can be successfully used as a cutter. The knife is put on the screw, firmly fixed with a nut, and the screw is clamped in the drill chuck. This cutter is suitable for working with any material: razor knives are made of alloy steel.
The spark wheels in lighters are made of very hard alloys, so throw them away together
you donāt need a lighter with an expired lighter: these wheels are excellent cutters for processing small metal objects. Tighten such a cutter on a bolt and insert an electric drill into the chuck.
Sanding. Grinding. Polishing
For many jobs, sandpaper has to be wrapped around a block. For sanding small parts, it is easier to use a matchbox instead of a block. It is always at hand and it is very easy to fix the skin on it. A piece of the required size is placed on top of the open box, the edges are folded inward and the boxes are pushed in.
A travel soap dish can be turned into a sanding tool. Replacing worn-out sandpaper with a new one is a matter of seconds.
When sanding small parts with sandpaper, it is easy to damage the skin on your fingertips, This can be avoided by placing sandpaper on a block, bending the edges and clamping it in a vice.
When sanding wood and metal objects with a large surface, it is convenient to use an attachment of two wooden blocks connected by a strip of leather. The sandpaper is attached with the sharp ends of nails driven into the top bar.
Another way to attach the skin to the bar. Insert one end of the skin into the slanting cut, secure the other with a pushpin.
Sandpaper (on any basis) is best cut with a nail. Its tip is carried out several times along the wrong side of the sheet, and then the desired piece is torn off. The edge is flat and not stretched.
It is very convenient to sand large surfaces, such as floors, with a kitchen trowel nailed to a block of wood. Such a device is more durable than plain sandpaper..
Sandpaper clogged with sawdust will still work if you first clean it with a shoe brush.
It is convenient to grind parts on this device, keeping a right angle during processing.
To sand a round wooden or plastic rod well with sandpaper, make a simple tool: In a rectangular wooden block, drill a hole corresponding to the diameter of the rod, and then saw the block into two equal parts. How to use this device can be seen from the figure.
Remove the blade from the old safety razor that you havenāt used for a long time and attach a piece of sandpaper to it. Such a device will help when sanding wood in hard-to-reach places..
For polishing small objects made of metal, stone, plastic, wood, you can use a vibrating electric shaver, the knives of which have served their life. Instead of the knife block, a plastic plate with a glued strip of felt is installed. Polished paste is applied to the felt.
A felt or felt disc with a foot inserted into a drill instead of a drill will help you quickly polish any flat surface.
We suggest polishing pipes in this way. We wrap the pipe with a strip of felt 30-50 mm wide with the applied polishing paste. From above we put on a rubber ring that covers the felt and presses it to the pipe. We clamp a rubberized circle into the drill chuck, with its help rotation is transmitted to the felt wheel, stirring the ring along the pipe, you can polish it along the entire length and on bends.
Standard round eraser ā The typewriter eraser can be used to polish small parts by securing it with the screw and nut in the drill chuck.
What are some key differences between drilling and milling processes? Which one would you recommend for creating precision holes in a material? Are there any specific applications where one technique is more suitable than the other?
The key differences between drilling and milling processes lie in their approach and purpose. Drilling is the process of creating holes in a material using a rotating cutting tool, known as a drill bit. It is primarily used for simple hole-making operations. On the other hand, milling involves removing material using a rotating multi-point cutting tool to create complex shapes or features like slots and pockets.
For creating precision holes in a material, drilling is the recommended technique. It is ideal for producing accurate and consistent holes with precise diameters in various materials, including metal, wood, and plastics. The simplicity and efficiency of drilling make it the go-to method for precision hole-making applications that require high accuracy.
While drilling is preferable for hole-making tasks, milling is more suitable for creating intricate shapes, contours, or profiles on a workpiece. It enables more versatile and complex machining operations, such as cutting gears or creating complex molds. Milling is commonly used in industries like aerospace, automotive, and manufacturing, where intricate designs or custom parts are necessary.
In summary, drilling is the preferred technique for precision hole-making due to its simplicity and accuracy. However, milling is advantageous when intricate shapes and complex features need to be created. The suitability of each technique depends on specific applications and requirements.
Drilling and milling processes differ in their approach and purpose. Drilling is used to create simple holes in a material, while milling is used to remove material and create complex shapes. Drilling is recommended for precision hole-making, producing accurate and consistent holes in various materials. On the other hand, milling is ideal for creating intricate shapes and features, making it common in industries like aerospace and automotive. The choice between drilling and milling depends on the specific application and requirements.
What are the main differences between drilling and milling? How do these two processes work and what types of materials are typically used with each? Can you provide some examples of when to use drilling versus milling in different industrial applications?