A Guide to Sawing & Piercing

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Sawing

Another decision you require to make when purchasing your frame is whether you desire an adjustable or a fixed design. An adjustable frame allows you to alter the size to accommodate damaged blades where as a fixed design will only take standard size blades as they are offered.

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

Saw frames: A jewellers saw frame is comparable in style 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 vary in size from 3 inch to 6 inch.

Saw piercing is most likely to be among the first major tasks you try as a jeweller. It is the first step in the improvement of a simple sheet of metal into something entirely various and holds unlimited possibilities. Most of us are familiar with the idea of sawing wood, lots of 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 method, which will, (in addition to some patience and practice), begin you off on the proper path to successful sawing every 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 very coarse to very great. The table below includes all the information you will need to choose 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
0.36
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 require to buy every grade of saw blade; a fundamental selection of coarse, medium and fine should be perfectly adequate. Guarantee you buy more of the medium grade (2/0 or 1/0) as these are what you will utilize most often.

Saw blade Grade 2
0.34
17.5
0.7
0.9 to 1.1

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

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

Saw blade Grade 1
0.3
19
0.7
0.8 to 1.0

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 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 6/0
0.18
32
0.4
0.35 to 0.5

Setting up a blade into a saw:

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 wooden manage should 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 secure the end outermost away into your frame utilizing the wing-nut. (Do not be lured to tighten up with pliers as this weakens the screw thread).
Then push gently versus the handle with your chest which will cause 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 trying to find an unique ping to show the stress is right. If you dont hear the ping simply reverse and duplicate the process again till its best. (Failure to secure your blade with the best tension will lead to it breaking as quickly as you begin to saw).

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

Repairing:.

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, making sure not to require the blade.

Repairing:.

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

Archimedian Hand Drill: This is a little spring loaded drill, which works using a manage at the top which is lowered and drew back up to rotate the chuck at the tip. This requires both hands to use efficiently.

Bench Mounted Pillar Drill: This is the supreme drilling tool and is utilized for solely that purpose. A strong 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 securely assisting to make sure an accurate outcome every time.

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

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 created with a pull/push movement using a wood baton and a piece of string. It is easy to control and is ideal for a beginner.

My saw blades keep breaking: Dont misery this is perfectly regular and practise makes best. Inspect the stress of your blade for slackness and make sure you are utilizing the right blade size/metal mix.

Beginning to Saw:.

My arm is hurting: Check your seating position is correct and attempt to unwind. Likewise do not be tempted to require the saw, you are just guiding it so let the blade will do the work.

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

When your design is scribed onto the metal, recognize a position within the waste material to drill a suitable 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 sure it is grasped tightly.
Drill the hole. Start slowly making sure the drill bit has discovered its position. Once in position increase the speed and press down with a gentle but continuous pressure up until all the way through..
Now, undo 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 correct.
Saw out your shape.
When sawing is total, eliminate the saw by un-clamping the blade nearest the handle once again.
Submit to end up.

Rotary Hand Drill: Rotary hand drills have the motor contained within the hand piece and either run off 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 large range of devices. Rotary hand drills can be utilized in conjunction with a drill stand to guarantee vertical drilling.

Defining and measuring: Before starting to saw, your metal must 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). If you want to move a more complicated style onto metal, copy it onto tracing paper and cover the reverse with graphite as regular. Then before moving to the metal surface, rub it over gently with Plasticine so that a sticky film is left, which will appear the pencil marks produced when you re-trace. As soon as you have actually re-traced the design onto the metal, get rid of the tracing paper and go over the pencil lines with a scriber.

My saw blades keep sticking: Apply some form of lube to relieve the sawing motion. Some jewellers use spittle, however you can also utilize beeswax. Just run it along the blade and continue 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 tension. There have been some brand-new advancements in frame style over the previous few years and it is now possible to purchase more advanced variations which develop the stress in the saw blade for you. Instead the tension is created by means of a cam-lever system 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 offered in bundles of 12, or by the gross (144) and come in a selection of grades which vary from really coarse to exceptionally great. 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 outdoors in.

Seat yourself at the bench and hold the operate in position on the bench peg, holding the saw in your opposite hand.
Your saw should 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 exterior of your marked line and carefully draw the blade down. Get rid of the saw and repeat a couple of times till you have a little indent to guide the blade.
Now start to gently move the saw up and down bearing in mind 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 use some beeswax which is offered in blocks, to assist reduce the movement.
Saw on the outside of your marked line and attempt to maintain a gentle and consistent action.
Once the cutting is complete, reverse the clamp at the top of the saw and pull the frame to eliminate it from the work, or simply bring it back along the cutting line if that is possible.
File the rough edge to complete.

Piercing.

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

Save this for later on.

The drill keeps walking around and will not discover its position: Make sure you have actually marked the drilling position clearly with a small damage to guide the drill. Guarantee the drill is fitted correctly into the chuck, it may not be directly. Above all, make sure the drill itself is totally upright.

Piercing an access hole for sawing:.

Centre punch: A centre punch is likewise a steel marker with a sharp point comparable to a scriber. It has a shallow suggestion and is used in conjunction 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.

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

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

Why Pierce? Piercing is required when you need access to a location which would otherwise be difficult or difficult to reach e.g. the centre of a circle. 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 inside out, instead of the outdoors in.

My drill isnt cutting: If the drill bit will not bite it might be since it is blunt or that the metal you are using is too difficult for that specific type of drill. Some drills are tougher than others so inspect their suitability prior to you purchase.

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