A Guide to Sawing & Piercing

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When buying your frame is whether you desire an adjustable or a fixed style, another decision you need to make. An adjustable frame enables you to modify the size to accommodate broken blades where as a set style will only take basic size blades as they are offered.

Most of us are familiar with the idea of sawing wood, lots of find metal a little unstable at initially, which is why we have put together this guide. Our objective is to help you with both tools and strategy, which will, (in addition to some persistence and practice), start you off on the proper course to effective sawing every time.

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 stress. 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.

Sawing

There have actually been some new developments in frame style over the previous few years and it is now possible to buy more sophisticated variations which produce the stress in the saw blade for you. Rather the tension is produced by means of 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 offered in packages of 12, or by the gross (144) and come in a choice of grades which vary from extremely coarse to exceptionally great. The table below contains all the info you will require to pick the appropriate 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 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 2
0.34
17.5
0.7
0.9 to 1.1

Saw blade Grade 3
0.36
16
0.8
0.9 to 1.2

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

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

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

Saw blade Grade 4
0.38
15
0.8
1.0 to 1.3

Saw blade Grade 1
0.3
19
0.7
0.8 to 1.0

You will not need to acquire every grade of saw blade; a basic selection of coarse, medium and fine must be perfectly sufficient. Ensure you buy more of the medium grade (2/0 or 1/0) as these are what you will utilize most often.

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

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

Installing a blade into a saw:

Piercing.

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

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

Bench Mounted Pillar Drill: This is the supreme drilling tool and is utilized for exclusively that function. A durable base is integrated with a movable chuck installed on a column, which is controlled by a lever at the side. The base can help with a clamp to hold work securely assisting to ensure a precise outcome each time.

Conserve this for later.

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

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

Fixing:.

Starting to Saw:.

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

Repairing:.

Marking out and determining: Before starting to saw, your metal needs to be plainly marked 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 comparable to a compass but with two points).

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 new developments in frame style over the previous couple of years and it is now possible to buy more advanced variations which develop the stress in the saw blade for you. Rather the stress is created via 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 blades: Blades for a jewellers piercing saw are sold in packages of 12, or by the gross (144) and come in a choice of grades which range from really coarse to very great. 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 within out, rather than the outside in.

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 wood deal with ought 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 secure the end furthest away into your frame using the wing-nut. (Do not be tempted to tighten up with pliers as this compromises the screw thread).
Push gently versus the manage with your chest which will cause the frame to flex, and tighten the second wing-nut to protect the blade.
Launch the frame and examine the stress of the blade by plucking it. (Failure to secure your blade with the right tension will result in it breaking as soon as you start to saw).

The most essential thing to keep in mind when drilling a hole is to keep your drill bit upright and completely vertical. Chucks are either completely adjustable to take all sizes of drill or interchangeable, implying you will require to alternate to accommodate various drill bits.

My arm is harming: Check your seating position is correct and attempt to relax. Dont be tempted to require the saw, you are simply guiding it so let the blade will do the work.

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 functionality of a pendant drill and can be used with a wide variety of accessories. Rotary hand drills can be used in conjunction with a drill stand to guarantee vertical drilling.

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 developed with a pull/push movement utilizing a wood baton and a piece of string. It is simple to control and is perfect for a beginner.

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

My drill isnt cutting: If the drill bit wont bite it may be due to the fact that it is blunt or that the metal you are using is too difficult for that particular kind of drill. Some drills are tougher than others so check their suitability before you purchase.

As soon as your style is scribed onto the metal, identify a position within the waste product 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 utilize, (please refer to chart) and insert into the chuck making sure it is grasped securely.
Drill the hole. Start gradually making sure the drill bit has discovered its position. Once in position increase the speed and lower with a mild however continuous pressure until all the method 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 stress is appropriate.
Saw out your shape.
As soon as sawing is total, remove the saw by un-clamping the blade nearest the deal with again.
File to complete.

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 needed. 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 within out, rather than the outside 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 kept in a vertical position with the blade dealing with forward, and you must be seated so that your workspace is around mid-chest height.
Position the blade on the outside of your marked 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 begin to gently move the saw up and down keeping in mind that the blade cuts on the down 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 relieve the movement.
Saw on the outside of your significant line and attempt to maintain a mild and stable action.
Once the cutting is total, reverse the clamp at the top of the saw and pull the frame down to eliminate it from the work, or just bring it back along the cutting line if that is possible.
File the rough edge to complete.

Piercing an access hole for sawing:.

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

Archimedian Hand Drill: This is a little spring loaded drill, which works using a manage at the top which is pushed down and pulled back up to turn the chuck at the tip. This requires both hands to utilize successfully.

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

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

My saw blades keep breaking: Dont anguish this is perfectly typical and practise makes best. Nevertheless, examine the stress of your blade for slackness and ensure you are utilizing the appropriate blade size/metal mix.

Drill bits: The most typical type of drill bits are twist drills which cut when turned in a clockwise instructions. They are made from a range of toughened materials and variety in size from 0.3 mm upwards. Drills can end up being blunt remarkably rapidly so its suggested to purchase multiples of the sizes you utilize most often.

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