A Guide to Sawing & Piercing

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Another choice you need to make when acquiring your frame is whether you want an adjustable or a set style. An adjustable frame allows you to change the size to accommodate damaged blades where as a fixed style will just take basic size blades as they are sold.

Sawing

Most of us are familiar with the concept of sawing wood, many find metal a little unstable at initially, which is why we have actually put together this guide. Our aim is to assist you with both tools and method, which will, (in addition to some persistence and practice), begin you off on the right path to successful sawing every time.

There have been some brand-new advancements in frame design over the past few years and it is now possible to purchase more sophisticated variations which create the stress in the saw blade for you. Rather the stress is developed via a cam-lever mechanism within the blade clamp, which makes it possible for a quick release and positioning of the blade with the flick of a lever.

Saw frames: A jewellers saw frame is similar in design 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 by hand. The size of the saw is dictated 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 tasks, however the option is down to personal preference.

Saw blades: Blades for a jewellers piercing saw are offered in bundles of 12, or by the gross (144) and be available in a choice of grades which vary from very coarse to incredibly fine. Blades are identified by the number of teeth per cm so for example the coarsest would be grade 4 which has 15 teeth per cm and the finest is grade 8/0 which has 30 teeth per cm. As a general rule, the thicker the metal, the coarser the blade you will require to cut it and vice versa. The table below includes all the information you will require to pick the right blade for the metal in question:

Saw blade Grade

Blade Thickness mm

Teeth per CM

Drill Size mm

Suggested gauge Of metal mm

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

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

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
0.38
15
0.8
1.0 to 1.3

You will not need to acquire every grade of saw blade; a basic choice of coarse, medium and fine ought to be perfectly appropriate. Nevertheless, guarantee you purchase more of the medium grade (2/0 or 1/0) as these are what you will use frequently.

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

Saw blade Grade 1
0.3
19
0.7
0.8 to 1.0

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

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

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

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

Installing a blade into a saw:

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

My saw blades keep sticking: Apply some form of lubricant to reduce the sawing motion. Some jewellers utilize spittle, however you can likewise utilize beeswax. Simply run it along the blade and continue to saw.

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

The drill keeps moving around and wont discover its position: Make sure you have actually marked the drilling position clearly with a tiny dent to guide the drill. Also make sure the drill is fitted properly into the chuck, it may not be directly. Above all, make sure the drill itself is completely upright.

Piercing.

Conserve this for later on.

Fixing:.

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

Drill bits: The most common type of drill bits are twist drills which cut when rotated in a clockwise instructions. They are made from a range of toughened products and range in size from 0.3 mm upwards. Drills can become blunt surprisingly rapidly so its recommended to buy multiples of the sizes you utilize most regularly.

Why Pierce? Piercing is needed when you require access to a location which would otherwise be tough or impossible to reach e.g. the centre of a circle. By drilling a small 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, instead of the outdoors in.

My arm is injuring: Check your seating position is proper and attempt to unwind. Likewise dont be tempted to force the saw, you are simply directing it so let the blade will do the work.

As soon as your style is scribed onto the metal, recognize a position within the waste material to drill an appropriate hole.
Mark the position with a scriber or centre punch.
Select the right drill size to refer the saw blade you intend to utilize, (please refer to chart) and insert into the chuck making certain it is gripped securely.
Drill the hole. Start gradually making certain the drill bit has discovered its position. As soon as in position increase the speed and lower with a mild however continuous pressure up until all the method through..
Now, reverse your saw blade at the clamp nearest the manage and thread the blade through the hole from the top. Once through, re-clamp your blade making sure the tension is correct.
Saw out your shape.
Get rid of the saw by un-clamping the blade nearest the deal with again as soon as sawing is total.
File to complete.

Rotary Hand Drill: Rotary hand drills have the motor contained within the hand piece and either run of the power supply or can be charged up to utilize cordless. They have the same multi-purpose functionality of a pendant drill and can be utilized with a large range of devices. Rotary hand drills can be used in conjunction with a drill stand to guarantee vertical drilling.

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

Bench Mounted Pillar Drill: This is the supreme drilling tool and is utilized for entirely that purpose. A strong 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 safely assisting to ensure a precise outcome whenever.

Marking out and determining: Before starting to saw, your metal must be plainly significant and measured so you have a guide to work to. Lines can be scribed onto metal using a scriber or a set of dividers (which are comparable to a compass but with 2 points).

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

My drills keep breaking: A blunt drill bit will break more quickly, as we naturally use more pressure if it does not seem cutting. They are likewise vulnerable to breakages if not protected properly in the chuck.

Saw frames: A jewellers saw frame is comparable in design to a little fretsaw and is made of springy steel which holds the blade in position under tension. There have been some brand-new developments in frame design over the past couple of years and it is now possible to acquire more sophisticated variations which produce the stress in the saw blade for you. Rather the stress is produced via a cam-lever system within the blade clamp, which enables 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 very coarse to very fine. 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 outdoors in.

Piercing an access hole for sawing:.

Troubleshooting:.

Archimedian Hand Drill: This is a small spring packed drill, which works utilizing a deal with at the top which is lowered and pulled back up to rotate the chuck at the idea. This requires both hands to use efficiently.

My saw blades keep breaking: Dont despair this is perfectly normal and practise makes best. Nevertheless, inspect the tension of your blade for slackness and make certain you are using the right blade size/metal combination.

Seat yourself at the bench and hold the work in position on the bench peg, holding the saw in your opposite hand.
Your saw must be held in a vertical position with the blade dealing with forward, and you need to be seated so that your working location is around mid-chest height.
Position the blade on the outside of your significant line and carefully draw the blade down. Get rid of the saw and repeat a number of times till you have a small indent to assist the blade.
Now start to carefully move the saw up and down keeping in mind that the blade cuts on the downward movement and simply re-positions on the upward. If you are having difficulty getting the blade to bite you can apply some beeswax which is sold in blocks, to help relieve the movement.
Saw on the outside of your marked line and attempt to maintain a gentle and stable action.
Once the cutting is total, reverse the clamp at the top of the saw and pull the frame down to remove it from the work, or just bring it back along the cutting line if that is possible.
File the rough edge to end up.

My drill isnt cutting: If the drill bit will not bite it might be due to the fact that it is blunt or that the metal you are using is too tough for that particular type of drill. Some drills are tougher than others so inspect their viability prior to you buy.

Bow drill: A bow drill is a conventional hand drill which can be utilized with one hand. It has an easy twisting system which is produced with a pull/push motion using a wooden baton and a piece of string. It is simple to control and is ideal for a novice.

Tools for Piercing: There are several methods to drill a hole. You can use hand tools or mechanised tools; the principle is much the exact same. When drilling a hole is to keep your drill bit upright and totally vertical, the most crucial thing to remember. This is why all drilling tools have an adjustable chuck to grip the drill bit firmly, whilst keeping it totally vertical. Chucks are either completely adjustable to take all sizes of drill or interchangeable, indicating you will need to alternate to accommodate different drill bits.

Pendant Drill: A pendant motor is a multi-purpose, mechanised tool which has a suspended motor and a flexible shaft connected to a hand piece, which contains the chuck. It is managed by a foot pedal and can be used with a big variety of various attachments consisting of drill bits.

Sit at your bench with your saw frame supported between your chest and the edge of the bench or the V of your bench peg. The wooden handle need to face you and the blade secures need 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 lured to tighten with pliers as this compromises the screw thread).
Then push carefully versus the manage with your chest which will trigger the frame to flex, and tighten up the 2nd wing-nut to protect the blade.
Launch the frame and check the tension of the blade by plucking it. You are searching for an unique ping to reveal the tension is right. If you do not hear the ping merely undo and repeat the procedure again up until its right. (Failure to secure your blade with the right stress will lead to it breaking as quickly as you start to saw).

Starting to Saw:.

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