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 permits you to modify the size to accommodate broken blades where as a set 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 couple of years and it is now possible to buy more sophisticated variations which create 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 makes it possible for a fast 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 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

Most of us are familiar with the principle of sawing wood, numerous find metal a little temperamental 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 patience and practice), start you off on the proper path to effective 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 choice of grades which vary from really coarse to very great. The table below contains all the details you will need to choose the appropriate 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 2
0.34
17.5
0.7
0.9 to 1.1

Saw blade Grade 4
0.38
15
0.8
1.0 to 1.3

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 8/0
0.17
30
0.3
As much as 0.4

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

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

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

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

You will not require to purchase every grade of saw blade; a basic choice of coarse, medium and fine should be perfectly appropriate. Nevertheless, ensure you purchase more of the medium grade (2/0 or 1/0) as these are what you will utilize frequently.

Saw blade Grade 3
0.36
16
0.8
0.9 to 1.2

Saw blade Grade 1
0.3
19
0.7
0.8 to 1.0

Installing a blade into a saw:

Marking out and determining: 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 are comparable to a compass but with two points). If you wish to transfer a more complicated design onto metal, copy it onto tracing paper and cover the reverse with graphite as normal. Before transferring to the metal surface area, rub it over gently with Plasticine so that a sticky film is left, which will reveal up the pencil marks developed when you re-trace. Eliminate the tracing paper and go over the pencil lines with a scriber as soon as you have actually re-traced the style onto the metal.

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

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 includes the chuck. It is managed by a foot pedal and can be used with a substantial range of different accessories consisting of drill bits.

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 handle ought to face you and the blade secures ought to be at the top of the frame.
Position your blade with the teeth at the top, pointing towards you and secure completion outermost 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 gently versus the handle with your chest which will trigger the frame to flex, and tighten up the second wing-nut to secure the blade.
Launch the frame and inspect the tension of the blade by plucking it. (Failure to secure your blade with the right stress will result in it breaking as soon as you start to saw).

Repairing:.

Starting to Saw:.

Once your design is scribed onto the metal, recognize 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 refer the saw blade you intend to use, (please describe chart) and insert into the chuck ensuring it is grasped firmly.
Drill the hole. Start slowly ensuring the drill bit has actually found its position. When in position increase the speed and push down with a constant however gentle 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. Once through, re-clamp your blade making certain the tension is correct.
Saw out your shape.
Once sawing is complete, remove the saw by un-clamping the blade nearest the manage once again.
Submit to end up.

Centre punch: A centre punch is also a steel marker with a sharp point similar to a scriber. It is and has a shallow tip 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.

My arm is harming: Check your seating position is appropriate and attempt to unwind. Likewise dont be tempted to require the saw, you are merely guiding it so let the blade will do the work.

Troubleshooting:.

Bow drill: A bow drill is a conventional hand drill which can be used with one hand. It has a simple twisting mechanism which is developed with a pull/push movement utilizing a wooden baton and a piece of string. It is simple to control and is perfect for a beginner.

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

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.

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. There have actually been some brand-new advancements in frame style over the previous couple of years and it is now possible to buy more advanced variations which develop the tension in the saw blade for you. Instead the tension is produced via a cam-lever mechanism within the blade clamp, which makes it possible for 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 bundles of 12, or by the gross (144) and come in a selection 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 outdoors in.

Rotary Hand Drill: Rotary hand drills have the motor included within the hand piece and either run of the power supply or can be charged up to utilize cordless. They have the exact same multi-purpose performance of a pendant drill and can be utilized with a broad variety of devices. Rotary hand drills can be utilized in combination with a drill stand to ensure vertical drilling.

Bench Mounted Pillar Drill: This is the ultimate drilling tool and is utilized for entirely that purpose. A tough base is integrated with a movable chuck mounted on a column, which is controlled by a lever at the side. The base can assist in a clamp to hold work safely assisting to make sure a precise result each time.

Piercing.

Drill bits: The most common 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 advisable to buy multiples of the sizes you use most frequently.

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

Why Pierce? Piercing is needed when you need access to an area which would otherwise be difficult or impossible 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, permitting you to saw from the within out, instead of the outside in.

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

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 held in a vertical position with the blade facing forward, and you need to be seated so that your workspace is around mid-chest height.
Position the blade on the exterior of your significant line and carefully draw the blade down. Get rid of the saw and repeat a number of times till you have a small indent to direct the blade.
Now start to carefully move the saw up and down keeping in mind that the blade cuts on the downward motion and simply 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 help alleviate the movement.
Saw on the outside of your significant line and try to keep a stable and mild action.
As soon as 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 simply bring it back along the cutting line if that is possible.
File the rough edge to complete.

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

Save this for later.

Archimedian Hand Drill: This is a little spring packed drill, which works using a deal with at the top which is pushed down and pulled back up to rotate the chuck at the idea. This requires both hands to utilize efficiently.

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

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 using is too difficult for that specific type of drill. Some drills are tougher than others so check their viability prior to you purchase.

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

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

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