A Guide to Sawing & Piercing

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

There have been some new advancements in frame design over the previous couple of years and it is now possible to acquire more advanced versions which create the stress in the saw blade for you. Rather the tension is developed through a cam-lever mechanism within the blade clamp, which enables a fast release and positioning of the blade with the flick of a lever.

Saw frames: A jewellers saw frame is comparable in design to a small fretsaw and is made of springy steel which holds the blade in position under tension. The size of the saw is determined by the depth from the blade to the back of the frame and they range in size from 3 inch to 6 inch.

Many of us are familiar with the principle of sawing wood, numerous discover metal a little unstable at first, which is why we have actually put together this guide. Our goal is to help you with both tools and technique, which will, (in addition to some perseverance and practice), begin you off on the correct path to successful sawing every time.

Sawing

Saw blades: Blades for a jewellers piercing saw are offered in packages of 12, or by the gross (144) and come in a selection of grades which range from very coarse to very great. The table listed below consists of all the information you will need to select the correct blade for the metal in question:

Saw blade Grade

Blade Thickness mm

Teeth per CM

Drill Size mm

Recommended gauge Of metal mm

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

Saw blade Grade 4
0.38
15
0.8
1.0 to 1.3

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 5/0
0.2
28
0.4
0.4 to 0.55

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 6/0
0.18
32
0.4
0.35 to 0.5

Saw blade Grade 8/0
0.17
30
0.3
Up to 0.4

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

You will not require to acquire every grade of saw blade; a standard selection of coarse, medium and fine ought to be completely sufficient. Ensure you buy more of the medium grade (2/0 or 1/0) as these are what you will use most often.

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

Setting up a blade into a saw:

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

Centre punch: A centre punch is also a steel marker with a sharp point comparable to a scriber. It has a shallow suggestion and is used in combination with a hammer to mark the position for subsequent drill holes. It is also possible to get automated centre punches which do not need a hammer and instead have a push button action.

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

Archimedian Hand Drill: This is a small spring filled drill, which works using a manage at the top which is pressed down and drew back as much as rotate the chuck at the pointer. This requires both hands to use efficiently.

Seat yourself at the bench and hold the operate in position on the bench peg, holding the saw in your opposite hand.
Your saw needs to be kept in a vertical position with the blade dealing with forward, and you ought to be seated so that your working location is around mid-chest height.
Position the blade on the exterior of your significant line and carefully draw the blade down. Eliminate the saw and repeat a number of times until you have a small indent to assist the blade.
Now begin to carefully move the saw up and down remembering that the blade cuts on the downward movement and merely re-positions on the upward. If you are having problem getting the blade to bite you can apply some beeswax which is offered in blocks, to help alleviate the movement.
Saw on the outside of your marked line and attempt to preserve a mild and constant action.
When 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 simply bring it back along the cutting line if that is possible.
File the rough edge to end up.

Once your style is scribed onto the metal, identify 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 correspond with the saw blade you mean to utilize, (please describe chart) and insert into the chuck making certain it is grasped tightly.
Drill the hole. Start slowly making certain the drill bit has discovered its position. When in position increase the speed and lower with a continuous however gentle pressure up until all the method through..
Now, reverse your saw blade at the clamp nearest the deal with and thread the blade through the hole from the top. As soon as through, re-clamp your blade ensuring the stress is appropriate.
Saw out your shape.
Remove the saw by un-clamping the blade nearest the handle again when sawing is complete.
File to finish.

Piercing an access hole for sawing:.

Bow drill: A bow drill is a conventional hand drill which can be utilized with one hand. It has a basic 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 perfect for a newbie.

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

Tools for Piercing: There are numerous various ways to drill a hole. You can utilize 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 firmly, whilst keeping it totally vertical. Chucks are either fully adjustable to take all sizes of drill or interchangeable, indicating you will need to alternate to accommodate various drill bits.

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

Bench Mounted Pillar Drill: This is the ultimate drilling tool and is used for solely that function. A tough base is integrated with a movable chuck installed on a column, which is managed by a lever at the side. The base can facilitate a clamp to hold work firmly assisting to ensure a precise result whenever.

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 need to face you and the blade clamps must be at the top of the frame.
Position your blade with the teeth at the top, pointing towards you and clamp the end furthest away into your frame utilizing the wing-nut. (Do not be tempted to tighten up with pliers as this weakens the screw thread).
Then push gently against the handle with your chest which will cause the frame to bend, and tighten up the second wing-nut to protect the blade.
Release the frame and inspect the stress of the blade by plucking it. (Failure to protect your blade with the ideal stress will result in it breaking as soon as you begin to saw).

Drill bits: The most common type of drill bits are twist drills which cut when rotated in a clockwise direction. They are made from a variety of toughened materials and variety in size from 0.3 mm upwards. Drills can become blunt remarkably quickly so its advisable to buy multiples of the sizes you utilize most often.

Sawing straight lines: Straight lines are best taken on with the saw tilted slightly forward using long, smooth strokes.

Beginning to Saw:.

Pendant Drill: A pendant motor is a multi-purpose, mechanised tool which has actually a suspended motor and a versatile shaft connected to a hand piece, which includes the chuck. It is managed by a foot pedal and can be utilized with a substantial variety of various accessories consisting of drill bits.

Piercing.

Marking out and measuring: Before starting to saw, your metal needs to be plainly marked and determined so you have a guide to work to. Lines can be scribed onto metal utilizing a scriber or a set of dividers (which resemble a compass but with 2 points). Copy it onto tracing paper and cover the reverse with graphite as normal if you want to move a more intricate style onto metal. Prior to transferring to the metal surface, rub it over lightly with Plasticine so that a sticky movie is left, which will reveal up the pencil marks produced when you re-trace. Eliminate the tracing paper and go over the pencil lines with a scriber when you have actually re-traced the style onto the metal.

Saw frames: A jewellers saw frame is similar in design to a little fretsaw and is made of springy steel which holds the blade in position under stress. There have been some brand-new advancements in frame style over the previous couple of years and it is now possible to purchase more innovative variations which produce the stress in the saw blade for you. Rather the stress is created by means of 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 blades: Blades for a jewellers piercing saw are sold in bundles of 12, or by the gross (144) and come in a choice of grades which vary from very coarse to exceptionally fine. By drilling a small hole you offer access to the saw blade which can then be fed through and re-clamped into the frame, enabling you to saw from the within out, rather than the outside in.

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

The drill keeps walking around and wont discover its position: Make sure you have marked the drilling position clearly with a small damage to assist the drill. Make sure the drill is fitted correctly into the chuck, it may not be directly. Above all, guarantee the drill itself is completely upright.

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

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 use cordless. They have the exact same multi-purpose functionality of a pendant drill and can be used with a wide range of accessories. Rotary hand drills can be used in combination with a drill stand to make sure vertical drilling.

Conserve this for later on.

Repairing:.

The drill is getting too hot: If the drill overheats you can cool it down using a small quantity of water or an oil based drilling coolant. Failing that, merely stop and allow the tools to cool off.

Troubleshooting:.

My saw blades keep breaking: Dont misery this is perfectly regular and practise makes best. However, check the stress of your blade for slackness and ensure you are using the correct blade size/metal mix.

Why Pierce? Piercing is required when you need access to an area which would otherwise be challenging or difficult to reach e.g. the centre of a circle. By drilling a little hole you offer access to the saw blade which can then be fed through and re-clamped into the frame, allowing you to saw from the inside out, rather than the outside in.

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