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 broken blades where as a set style will just take standard size blades as they are offered.

Saw piercing is likely to be among the first major jobs you try as a jeweller. It is the initial step in the change of a basic sheet of metal into something completely various and holds endless possibilities. Although many of us recognize with the idea of sawing wood, many find metal a little temperamental initially, which is why we have put together this guide. Our goal is to help you with both tools and method, which will, (in addition to some persistence and practice), begin you off on the appropriate course to effective sawing every time.

There have been some new developments in frame style over the previous couple of years and it is now possible to acquire advanced versions which produce the stress in the saw blade for you. One such design is from a business called Knew Concepts who have a series of light-weight aluminium frames which do not flex. Rather the stress is produced through 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. These specific clamps can also be turned 45 degrees which helps with sawing into tough areas.

Sawing

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. 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.

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 really coarse to incredibly fine. The table listed below consists of all the information you will require to select the correct 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 4
0.38
15
0.8
1.0 to 1.3

Saw blade Grade 3
0.36
16
0.8
0.9 to 1.2

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 fundamental selection of coarse, medium and fine should be completely adequate. Nevertheless, ensure you purchase more of the medium grade (2/0 or 1/0) as these are what you will use most typically.

Saw blade Grade 8/0
0.17
30
0.3
Approximately 0.4

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 1/0
0.28
20.5
0.6
0.6 to 0.95

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

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

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

Installing a blade into a saw:

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 tension. There have been some brand-new advancements in frame design over the past few years and it is now possible to buy more sophisticated versions which create the tension in the saw blade for you. Instead the tension 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 bundles of 12, or by the gross (144) and come in a choice of grades which range from really coarse to exceptionally fine. By drilling a little hole you offer access to the saw blade which can then be fed through and re-clamped into the frame, permitting you to saw from the inside out, rather than the outside in.

Tools for Piercing: There are various ways to drill a hole. You can utilize hand tools or mechanised tools; the concept is much the exact same. The most crucial thing to remember 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 tightly, whilst keeping it fully vertical. Chucks are either totally adjustable to take all sizes of drill or interchangeable, indicating you will need to alternate to accommodate different drill bits.

Once your style is scribed onto the metal, determine a position within the waste product to drill an ideal hole.
Mark the position with a scriber or centre punch.
Select the proper drill size to correspond with the saw blade you mean to utilize, (please refer to chart) and insert into the chuck making sure it is grasped tightly.
Drill the hole. Start slowly ensuring the drill bit has found its position. Once in position increase the speed and press down with a gentle but constant pressure until 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. Once through, re-clamp your blade making certain the tension is appropriate.
Saw out your shape.
Remove the saw by un-clamping the blade nearest the manage again when sawing is total.
File to finish.

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 facing 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. Remove the saw and repeat a couple of times up until you have a little indent to assist the blade.
Now start to carefully move the saw up and down bearing in mind that the blade cuts on the down movement and simply re-positions on the upward. If you are having trouble getting the blade to bite you can use some beeswax which is offered in blocks, to assist alleviate the movement.
Saw on the exterior of your significant line and try to maintain a consistent and gentle action.
Once the cutting is total, undo the clamp at the top of the saw and pull the frame down 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.

Sawing straight lines: Straight lines are best taken on with the saw slanted somewhat forward utilizing long, smooth strokes.

Bench Mounted Pillar Drill: This is the ultimate drilling tool and is utilized for exclusively that function. A strong base is integrated with a movable chuck installed on a column, which is controlled by a lever at the side. The base can assist in a clamp to hold work firmly assisting to guarantee an accurate outcome each time.

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

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

The drill keeps moving around and wont discover its position: Make sure you have actually marked the drilling position plainly with a small damage to direct the drill. Likewise guarantee the drill is fitted correctly into the chuck, it may not be straight. Above all, ensure the drill itself is fully upright.

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 handle should face you and the blade secures 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 lured to tighten up with pliers as this weakens the screw thread).
Then push carefully against the handle with your chest which will cause the frame to bend, and tighten the 2nd wing-nut to secure the blade.
Release the frame and inspect the stress of the blade by plucking it. (Failure to protect your blade with the right stress will result in it breaking as quickly as you start to saw).

Conserve this for later.

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

Drill bits: The most typical kind of drill bits are twist drills which cut when turned in a clockwise direction. They are made from a range of toughened products and range in size from 0.3 mm upwards. Drills can become blunt remarkably rapidly so its a good idea to purchase multiples of the sizes you use most regularly.

My drill isnt cutting: If the drill bit wont bite it might be because it is blunt or that the metal you are using is too hard for that specific kind of drill. Some drills are tougher than others so examine their suitability before you purchase.

Sawing curves: Curves require 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 force the blade.

Beginning to Saw:.

Repairing:.

Centre punch: A centre punch is likewise a steel marker with a sharp point similar 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 also possible to get automated centre punches which dont need a hammer and rather have a push button action.

Defining 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 utilizing a scriber or a set of dividers (which are similar to a compass but with 2 points). If you desire to move a more complex design onto metal, copy it onto tracing paper and cover the reverse with graphite as typical. Then before transferring to the metal surface, rub it over gently 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 style onto the metal, get rid of the tracing paper and discuss the pencil lines with a scriber.

Bow drill: A bow drill is a traditional hand drill which can be utilized with one hand. It has a simple twisting system which is created with a pull/push movement using a wood baton and a piece of string. It is simple to control and is perfect for a novice.

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 used with a big range of different accessories including drill bits.

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

My saw blades keep breaking: Dont despair this is completely typical and practise makes best. However, examine the tension of your blade for slackness and make certain you are using the appropriate blade size/metal combination.

My arm is injuring: Check your seating position is correct and attempt to unwind. Likewise do not be lured to require the saw, you are simply directing it so let the blade will do the work.

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

Archimedian Hand Drill: This is a small spring packed drill, which works utilizing a handle at the top which is lowered and drew back approximately rotate the chuck at the suggestion. This requires both hands to use efficiently.

Piercing an access hole for sawing:.

Piercing.

Repairing:.

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 use cordless. They have the very same multi-purpose performance of a pendant drill and can be utilized with a large range of devices. Rotary hand drills can be utilized in conjunction with a drill stand to ensure vertical drilling.

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