A Guide to Sawing & Piercing

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Sawing

When acquiring your frame is whether you desire an adjustable or a fixed design, another decision you need to make. An adjustable frame allows you to alter the size to accommodate broken blades where as a fixed design will just take basic size blades as they are offered.

Saw frames: A jewellers saw frame is comparable in style to a small fretsaw and is made of springy steel which holds the blade in position under stress. 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.

There have been some new developments in frame style over the past couple of years and it is now possible to purchase more advanced variations which create the stress in the saw blade for you. Instead the stress is developed by means of a cam-lever system within the blade clamp, which allows a quick release and positioning of the blade with the flick of a lever.

Saw piercing is likely to be one of the first major jobs you attempt as a jeweller. It is the initial step in the improvement of a simple sheet of metal into something totally various and holds limitless possibilities. Although many of us recognize with the idea of sawing wood, numerous discover metal a little temperamental at initially, which is why we have put together this guide. Our goal is to assist you with both tools and method, which will, (in addition to some persistence and practice), start you off on the proper course to successful sawing each time.

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 vary from extremely coarse to exceptionally great. The table below consists of all the information you will require to pick the proper blade for the metal in question:

Saw blade Grade

Blade Thickness mm

Teeth per CM

Drill Size mm

Advised gauge Of metal mm

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

Saw blade Grade 1
0.3
19
0.7
0.8 to 1.0

Saw blade Grade 2
0.34
17.5
0.7
0.9 to 1.1

You will not require to acquire every grade of saw blade; a standard choice of coarse, medium and fine ought to be perfectly adequate. Ensure you purchase more of the medium grade (2/0 or 1/0) as these are what you will utilize most frequently.

Saw blade Grade 8/0
0.17
30
0.3
Approximately 0.4

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

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 3
0.36
16
0.8
0.9 to 1.2

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

Saw blade Grade 4
0.38
15
0.8
1.0 to 1.3

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

Setting up a blade into a saw:

My saw blades keep breaking: Dont despair this is perfectly normal and practise makes perfect. Examine the tension of your blade for slackness and make sure you are utilizing the appropriate blade size/metal mix.

Marking out and determining: Before starting to saw, your metal needs to be clearly 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 are comparable to a compass however with 2 points). If you wish to transfer a more complex design onto metal, copy it onto tracing paper and cover the reverse with graphite as normal. Then prior to transferring to the metal surface area, rub it over lightly with Plasticine so that a sticky movie is left, which will appear the pencil marks created when you re-trace. When you have actually re-traced the design onto the metal, eliminate the tracing paper and review the pencil lines with a scriber.

Repairing:.

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

Rotary Hand Drill: Rotary hand drills have the motor consisted of within the hand piece and either run of the power supply or can be charged up to utilize cordless. They have the very same multi-purpose performance of a pendant drill and can be used with a vast array of devices. Rotary hand drills can be utilized in conjunction with a drill stand to make sure vertical drilling.

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

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 proper drill size to refer the saw blade you intend to use, (please refer to chart) and insert into the chuck ensuring it is grasped tightly.
Drill the hole. Start slowly making sure the drill bit has actually discovered its position. Once in position increase the speed and lower with a constant but gentle pressure till all the way through..
Now, undo your saw blade at the clamp nearest the manage and thread the blade through the hole from the top. As soon as through, re-clamp your blade making sure the tension is correct.
Saw out your shape.
Once sawing is total, eliminate the saw by un-clamping the blade nearest the manage again.
Submit to finish.

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 must face you and the blade clamps should be at the top of the frame.
Position your blade with the teeth at the top, pointing towards you and clamp completion furthest away into your frame using the wing-nut. (Do not be tempted to tighten with pliers as this deteriorates the screw thread).
Push carefully against the manage with your chest which will trigger the frame to bend, and tighten up the 2nd wing-nut to secure the blade.
Release the frame and check the stress of the blade by plucking it. (Failure to protect your blade with the ideal tension will result in it breaking as soon as you start to saw).

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. There have been some new advancements in frame style over the previous couple of years and it is now possible to buy more sophisticated versions which produce the stress in the saw blade for you. Instead the tension is created via a cam-lever system within the blade clamp, which allows a fast release and positioning of the blade with the flick of a lever. 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 vary from extremely coarse to incredibly great. By drilling a little hole you provide access to the saw blade which can then be fed through and re-clamped into the frame, allowing you to saw from the within out, rather than the outside in.

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

Centre punch: A centre punch is likewise a steel marker with a sharp point comparable to a scriber. It has a shallow idea 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 do not require a hammer and rather have a push button action.

My saw blades keep sticking: Apply some kind of lube to ease the sawing movement. Some jewellers utilize spittle, however you can likewise use beeswax. Just run it along the blade and continue to saw.

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 utilizing is too tough for that particular kind of drill. Some drills are harder than others so inspect their suitability before you buy.

Why Pierce? Piercing is required when you require access to a location which would otherwise be impossible or hard 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, allowing you to saw from the within out, rather than the outdoors in.

My arm is harming: Check your seating position is proper and attempt to unwind. Do not be lured to require the saw, you are merely guiding it so let the blade will do the work.

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

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

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

Tools for Piercing: There are many various ways to drill a hole. You can utilize 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 tightly, 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 various drill bits.

Beginning to Saw:.

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Piercing a gain access to hole for sawing:.

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

Archimedian Hand Drill: This is a small spring packed drill, which works using a deal with at the top which is lowered and drew back as much as rotate the chuck at the tip. This needs both hands to utilize effectively.

Troubleshooting:.

My drills keep breaking: A blunt drill bit will break more quickly, as we naturally apply more pressure if it does not appear to be cutting. They are likewise prone to breakages if not protected correctly in the chuck.

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

Piercing.

Seat yourself at the bench and hold the operate 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 ought to be seated so that your workspace 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 up until 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 merely re-positions on the upward. If you are having trouble getting the blade to bite you can apply some beeswax which is offered in blocks, to assist ease the movement.
Saw on the outside of your significant line and attempt to maintain a gentle and consistent action.
Once the cutting is complete, undo the clamp at the top of the saw and pull the frame to eliminate it from the work, or merely bring it back along the cutting line if that is possible.
File the rough edge to end up.

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

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