A Guide to Sawing & Piercing

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Sawing

There have actually been some new advancements in frame design over the previous couple of years and it is now possible to buy advanced variations which develop the tension in the saw blade for you. One such style is from a company called Knew Concepts who have a series of light-weight aluminium frames which do not flex. Rather the tension is developed by means of a cam-lever mechanism within the blade clamp, which allows a fast release and positioning of the blade with the flick of a lever. These particular clamps can also be turned 45 degrees which facilitates sawing into tough areas.

Saw frames: A jewellers saw frame is similar in style to a small fretsaw and is made of springy steel which holds the blade in position under stress. Blades are held in location by wing-nut clamps at either end of the saw which are tightened up by hand. The size of the saw is determined by the depth from the blade to the back of the frame and they vary in size from 3 inch to 6 inch. A 3 inch frame is a great basic function size for small scale projects, but the option is down to personal preference.

Many of us are familiar with the idea of sawing wood, many discover metal a little unstable at initially, which is why we have actually put together this guide. Our goal is to assist you with both tools and method, which will, (in addition to some patience and practice), start you off on the appropriate course to effective sawing every time.

Another choice you require to make when buying your frame is whether you desire an adjustable or a set style. An adjustable frame allows you to modify the size to accommodate broken blades where as a set design will only take basic size blades as they are offered.

Saw blades: Blades for a jewellers piercing saw are sold in packages of 12, or by the gross (144) and come in a selection of grades which range from extremely coarse to exceptionally great. The table listed below contains all the info you will need to select the proper blade for the metal in concern:

Saw blade Grade

Blade Thickness mm

Teeth per CM

Drill Size mm

Recommended gauge Of metal mm

Saw blade Grade 1
0.3
19
0.7
0.8 to 1.0

Saw blade Grade 3
0.36
16
0.8
0.9 to 1.2

Saw blade Grade 2
0.34
17.5
0.7
0.9 to 1.1

Saw blade Grade 4/0
0.22
26.5
0.5
0.5 to 0.6

Saw blade Grade 8/0
0.17
30
0.3
As much as 0.4

Saw blade Grade 6/0
0.18
32
0.4
0.35 to 0.5

Saw blade Grade 2/0
0.26
22
0.55
0.6 to 0.8

Saw blade Grade 3/0
0.24
23.5
0.5
0.6 to 0.7

You will not need to buy every grade of saw blade; a basic choice of coarse, medium and fine should be completely sufficient. However, guarantee you purchase more of the medium grade (2/0 or 1/0) as these are what you will use usually.

Saw blade Grade 4
0.38
15
0.8
1.0 to 1.3

Saw blade Grade 5/0
0.2
28
0.4
0.4 to 0.55

Saw blade Grade 1/0
0.28
20.5
0.6
0.6 to 0.95

Installing a blade into a saw:

Bench Mounted Pillar Drill: This is the supreme drilling tool and is used for exclusively that function. A sturdy base is combined with a movable chuck mounted on a column, which is controlled by a lever at the side. The base can help with a clamp to hold work securely assisting to ensure a precise outcome whenever.

Drill bits: The most typical type of drill bits are twist drills which cut when rotated in a clockwise instructions. They are made from a range of toughened materials and variety in size from 0.3 mm upwards. Drills can end up being blunt surprisingly rapidly so its advisable to purchase multiples of the sizes you utilize most frequently.

When your style is scribed onto the metal, identify a position within the waste material to drill an ideal hole.
Mark the position with a scriber or centre punch.
Select the correct drill size to correspond with the saw blade you mean to use, (please refer to chart) and insert into the chuck ensuring it is grasped tightly.
Drill the hole. Start gradually making sure the drill bit has actually discovered its position. Once in position increase the speed and lower with a gentle however constant pressure till all the method through..
Now, undo your saw blade at the clamp nearest the deal with and thread the blade through the hole from the top. When through, re-clamp your blade making certain the tension is appropriate.
Saw out your shape.
Once sawing is total, eliminate the saw by un-clamping the blade nearest the manage once again.
File to finish.

Rotary Hand Drill: Rotary hand drills have the motor consisted of within the hand piece and either run off of the power supply or can be charged up to use cordless. They have the very same multi-purpose functionality of a pendant drill and can be utilized with a large range of accessories. Rotary hand drills can be utilized in combination with a drill stand to make sure vertical drilling.

Why Pierce? When you need access to a location which would otherwise be difficult or tough to reach e.g. the centre of a circle, piercing is required. By drilling a little hole you provide access to the saw blade which can then be fed through and re-clamped into the frame, enabling you to saw from the inside out, rather than the outside in.

Seat yourself at the bench and hold the work in position on the bench peg, holding the saw in your opposite hand.
Your saw ought to be kept in a vertical position with the blade dealing with forward, and you must be seated so that your workspace is around mid-chest height.
Position the blade on the exterior of your marked line and gently draw the blade down. Eliminate the saw and repeat a couple of times up until you have a little indent to assist the blade.
Now start to gently move the saw up and down bearing in mind that the blade cuts on the down motion and simply re-positions on the upward. If you are having trouble getting the blade to bite you can use some beeswax which is sold in blocks, to assist ease the motion.
Saw on the outside of your marked line and try to keep a steady and mild action.
As soon as the cutting is complete, reverse the clamp at the top of the saw and pull the frame to remove it from the work, or just bring it back along the cutting line if that is possible.
Submit the rough edge to finish.

Troubleshooting:.

Sawing curves: Curves require much shorter strokes and require an upright sawing position. You require to carefully turn the saw along the curve with each cut, taking care not to require the blade.

Piercing an access hole for sawing:.

My saw blades keep sticking: Apply some type of lube to relieve the sawing movement. Some jewellers utilize spittle, but you can also use beeswax. Simply run it along the blade and continue to saw.

Bow drill: A bow drill is a traditional hand drill which can be used with one hand. It has a simple twisting system which is developed with a pull/push motion using a wooden baton and a piece of string. It is easy to manage and is ideal for a newbie.

Sit at your bench with your saw frame supported in between your chest and the edge of the bench or the V of your bench peg. The wood deal with ought to face you and the blade secures ought to be at the top of the frame.
Position your blade with the teeth at the top, pointing towards you and clamp the end outermost away into your frame utilizing the wing-nut. (Do not be tempted to tighten with pliers as this damages the screw thread).
Then push gently versus the handle with your chest which will trigger the frame to bend, and tighten the 2nd wing-nut to secure the blade.
Launch the frame and inspect the tension of the blade by plucking it. You are searching for a distinctive ping to reveal the stress is right. If you do not hear the ping just reverse and repeat the procedure once again up until its. (Failure to protect your blade with the best stress will lead to it breaking as soon as you begin to saw).

My drill isnt cutting: If the drill bit will not bite it may be because it is blunt or that the metal you are utilizing is too tough for that particular type of drill. Some drills are tougher than others so examine their suitability prior to you buy.

Archimedian Hand Drill: This is a small spring filled drill, which works utilizing a handle at the top which is pushed down and pulled back approximately rotate the chuck at the pointer. This needs both hands to utilize efficiently.

Piercing.

Sawing straight lines: Straight lines are best tackled with the saw slanted somewhat forward using long, smooth strokes.

My drills keep breaking: A blunt drill bit will break more easily, as we intuitively use more pressure if it doesnt appear to be cutting. They are likewise prone to breakages if not protected properly in the chuck.

Scriber: A scriber is a fine marking tool with a narrow and long pointer. It is utilized to scribe styles onto metal and can be utilized to mark the positions for drilling.

Pendant Drill: A pendant motor is a multi-purpose, mechanised tool which has a suspended motor and a versatile shaft attached to a hand piece, which consists of the chuck. It is controlled by a foot pedal and can be utilized with a big variety of different accessories including drill bits.

Fixing:.

My arm is harming: Check your seating position is correct and try to unwind. Do not be lured to require the saw, you are simply assisting it so let the blade will do the work.

Conserve this for later.

Beginning to Saw:.

Saw frames: A jewellers saw frame is similar in style to a little fretsaw and is made of springy steel which holds the blade in position under stress. There have been some new advancements in frame design over the previous few years and it is now possible to acquire more innovative versions which create the stress in the saw blade for you. Instead the tension is created by means of a cam-lever mechanism within the blade clamp, which makes it possible for a fast release and positioning of the blade with the flick of a lever. Saw blades: Blades for a jewellers piercing saw are offered in packages of 12, or by the gross (144) and come in a choice of grades which vary from extremely coarse to very great. By drilling a small hole you supply access to the saw blade which can then be fed through and re-clamped into the frame, enabling you to saw from the inside out, rather than the outside in.

Centre punch: A centre punch is also a steel marker with a sharp point comparable to a scriber. It has a shallow pointer and is utilized in combination with a hammer to mark the position for subsequent drill holes. It is likewise possible to get automated centre punches which dont require a hammer and rather have a push button action.

My saw blades keep breaking: Dont despair this is completely normal and practise makes perfect. However, check the stress of your blade for slackness and make certain you are utilizing the right blade size/metal combination.

The drill is getting too hot: If the drill overheats you can cool it down utilizing a little quantity of water or an oil based drilling coolant. Stopping working that, just stop and enable the tools to cool down.

Defining and determining: Before starting to saw, your metal should be plainly marked and measured so you have a guide to work to. Lines can be scribed onto metal utilizing a scriber or a set of dividers (which are comparable to a compass however with two points). Copy it onto tracing paper and cover the reverse with graphite as typical if you desire to move a more intricate design onto metal. Before transferring to the metal surface area, rub it over gently with Plasticine so that a sticky movie is left, which will reveal up the pencil marks produced when you re-trace. When you have re-traced the style onto the metal, remove the tracing paper and discuss the pencil lines with a scriber.

Tools for Piercing: There are several methods to drill a hole. You can use hand tools or mechanised tools; the concept is similar. The most crucial thing to bear in mind when drilling a hole is to keep your drill bit completely vertical and upright. This is why all drilling tools have an adjustable chuck to grip the drill bit securely, whilst keeping it totally vertical. Chucks are either totally adjustable to take all sizes of drill or interchangeable, suggesting you will need to alternate to accommodate different drill bits.

The drill keeps walking around and will not discover its position: Make sure you have marked the drilling position clearly with a tiny dent to direct the drill. Ensure the drill is fitted properly into the chuck, it might not be straight. Above all, make sure the drill itself is totally upright.

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