A Guide to Sawing & Piercing

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There have actually been some new advancements in frame style over the previous couple of years and it is now possible to acquire more innovative variations which develop the stress in the saw blade for you. Rather the tension is developed by means of 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.

Another choice you require to make when acquiring your frame is whether you want an adjustable or a fixed design. An adjustable frame allows you to alter the size to accommodate damaged blades where as a set design will only take standard size blades as they are sold.

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

Sawing

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. Blades are kept in location by wing-nut clamps at either end of the saw which are tightened by hand. The size of the saw is dictated by the depth from the blade to the back of the frame and they range in size from 3 inch to 6 inch. A 3 inch frame is a great general function size for small scale projects, but the option is down to individual preference.

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 range from extremely coarse to very great. The table listed below contains all the information you will require to select the appropriate blade for the metal in concern:

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 5/0
0.2
28
0.4
0.4 to 0.55

You will not need to acquire every grade of saw blade; a basic choice of coarse, medium and fine need to be perfectly sufficient. However, guarantee 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 3/0
0.24
23.5
0.5
0.6 to 0.7

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 8/0
0.17
30
0.3
Up to 0.4

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

Saw blade Grade 1
0.3
19
0.7
0.8 to 1.0

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

Setting up a blade into a saw:

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

Tools for Piercing: There are various ways to drill a hole. You can utilize hand tools or mechanised tools; the concept is similar. The most crucial thing to keep in mind when drilling a hole is to keep your drill bit upright and totally vertical. This is why all drilling tools have an adjustable chuck to grip the drill bit firmly, whilst keeping it fully vertical. Chucks are either completely adjustable to take all sizes of drill or interchangeable, implying you will require to alternate to accommodate different drill bits.

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

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

Bow drill: A bow drill is a traditional hand drill which can be used with one hand. It has an easy twisting mechanism which is created with a pull/push motion utilizing a wood baton and a piece of string. It is simple to control and is ideal for a beginner.

My drills keep breaking: A blunt drill bit will break more quickly, as we intuitively apply more pressure if it doesnt seem cutting. They are likewise prone to damages if not protected correctly in the chuck.

My arm is hurting: Check your seating position is correct and try to unwind. Likewise dont be lured to require the saw, you are merely guiding it so let the blade will do the work.

Archimedian Hand Drill: This is a little spring loaded drill, which works utilizing a deal with at the top which is lowered and drew back approximately turn the chuck at the pointer. This needs both hands to utilize effectively.

My saw blades keep breaking: Dont despair this is perfectly regular and practise makes best. Check the stress of your blade for slackness and make sure you are using the appropriate blade size/metal combination.

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 similar to a compass however with 2 points).

Why Pierce? When you need access to an area which would otherwise be difficult or difficult to reach e.g. the centre of a circle, piercing is needed. 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.

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

Saw frames: A jewellers saw frame is similar in design to a little fretsaw and is made of springy steel which holds the blade in position under stress. There have been some brand-new developments in frame design over the past couple of years and it is now possible to acquire more advanced versions which develop the stress in the saw blade for you. Instead the tension is produced through a cam-lever mechanism within the blade clamp, which enables 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 bundles of 12, or by the gross (144) and come in a selection of grades which range from extremely coarse to exceptionally fine. By drilling a little 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 outdoors in.

Save this for later on.

Fixing:.

Piercing.

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 tough for that particular type of drill. Some drills are tougher than others so check their suitability before you purchase.

Bench Mounted Pillar Drill: This is the ultimate drilling tool and is utilized for solely that function. A sturdy base is combined with a movable chuck mounted on a column, which is managed by a lever at the side. The base can assist in a clamp to hold work securely helping to make sure an accurate result whenever.

Once your style is scribed onto the metal, identify 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 correspond with the saw blade you mean to use, (please refer to chart) and insert into the chuck ensuring it is gripped tightly.
Drill the hole. Start gradually making certain the drill bit has actually found its position. Once in position increase the speed and push down with a constant but gentle pressure until all the way through..
Now, undo your saw blade at the clamp nearest the handle and thread the blade through the hole from the top. When through, re-clamp your blade making certain the stress is appropriate.
Saw out your shape.
Get rid of the saw by un-clamping the blade nearest the handle again as soon as sawing is complete.
File to finish.

Repairing:.

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 utilized with a vast array of devices. Rotary hand drills can be utilized in combination with a drill stand to ensure vertical drilling.

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, merely stop and enable the tools to cool down.

The drill keeps moving around and will not discover its position: Make sure you have marked the drilling position plainly with a small damage to direct the drill. Also guarantee the drill is fitted correctly into the chuck, it might not be straight. Above all, ensure the drill itself is totally 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 also possible to get automatic centre punches which dont need a hammer and rather have a push button action.

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 variety of various attachments including drill bits.

Seat yourself at the bench and hold the operate in position on the bench peg, holding the saw in your opposite hand.
Your saw ought to be kept in a vertical position with the blade dealing with forward, and you should be seated so that your workspace is around mid-chest height.
Position the blade on the exterior of your significant line and gently draw the blade down. Remove the saw and repeat a couple of times until you have a little indent to guide the blade.
Now start to gently move the saw up and down remembering that the blade cuts on the downward motion and just re-positions on the upward. If you are having difficulty getting the blade to bite you can use some beeswax which is sold in blocks, to assist alleviate the movement.
Saw on the outside of your significant line and try to keep a mild and constant action.
As soon as the cutting is complete, undo 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.
Submit the rough edge to complete.

Piercing an access hole for sawing:.

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

Beginning to Saw:.

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 clamp completion outermost away into your frame utilizing the wing-nut. (Do not be lured to tighten with pliers as this deteriorates the screw thread).
Then push gently against the handle with your chest which will trigger the frame to flex, and tighten up the 2nd wing-nut to secure the blade.
Launch the frame and inspect the stress of the blade by plucking it. (Failure to secure your blade with the best tension will result in it breaking as soon as you begin to saw).

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