A Guide to Sawing & Piercing

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There have been some new developments in frame style over the past few years and it is now possible to purchase advanced variations which develop the tension in the saw blade for you. One such style is from a company called Knew Concepts who have a series of light-weight aluminium frames which do not flex. Rather 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. These particular clamps can also be turned 45 degrees which assists in sawing into hard locations.

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. Blades are held in location by wing-nut clamps at either end of the saw which are tightened up 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 basic function size for little scale projects, but the option is down to individual preference.

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

Sawing

When acquiring your frame is whether you want an adjustable or a set design, another decision you require to make. An adjustable frame permits you to change the size to accommodate broken blades where as a set style will only take basic size blades as they are offered.

Saw blades: Blades for a jewellers piercing saw are sold in packages of 12, or by the gross (144) and be available in a selection of grades which range from really coarse to extremely great. Blades are identified by the variety of teeth per cm so for instance the coarsest would be grade 4 which has 15 teeth per cm and the finest is grade 8/0 which has 30 teeth per cm. As a basic guideline, the thicker the metal, the coarser the blade you will need to cut it and vice versa. The table listed below contains all the info you will require to pick the correct blade for the metal in concern:

Saw blade Grade

Blade Thickness mm

Teeth per CM

Drill Size mm

Suggested gauge Of metal mm

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

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

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

You will not need to purchase every grade of saw blade; a standard selection of coarse, medium and fine should be perfectly appropriate. Guarantee 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
As much as 0.4

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

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 3/0
0.24
23.5
0.5
0.6 to 0.7

Saw blade Grade 1
0.3
19
0.7
0.8 to 1.0

Saw blade Grade 3
0.36
16
0.8
0.9 to 1.2

Setting up a blade into a saw:

Bow drill: A bow drill is a conventional hand drill which can be used with one hand. It has a basic twisting system which is developed with a pull/push movement utilizing a wooden baton and a piece of string. It is simple to manage and is ideal for a newbie.

Troubleshooting:.

My arm is hurting: Check your seating position is correct and attempt to relax. Likewise dont be tempted to force the saw, you are simply directing it so let the blade will do the work.

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 facing forward, and you should be seated so that your working location is around mid-chest height.
Position the blade on the exterior of your marked line and gently draw the blade down. Eliminate the saw and repeat a couple of times till you have a small indent to assist the blade.
Now begin to gently 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 trouble getting the blade to bite you can apply some beeswax which is sold in blocks, to help ease the movement.
Saw on the exterior of your significant line and try to preserve a gentle and stable action.
When the cutting is total, reverse the clamp at the top of the saw and pull the frame to eliminate it from the work, or merely bring it back along the cutting line if that is possible.
Submit the rough edge to finish.

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 particular kind of drill. Some drills are harder than others so inspect their viability prior to you buy.

Pendant Drill: A pendant motor is a multi-purpose, mechanised tool which has actually a suspended motor and a versatile shaft connected to a hand piece, which consists of the chuck. It is managed by a foot pedal and can be used with a substantial range of different accessories including drill bits.

Piercing.

Defining and measuring: Before beginning 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 resemble a compass but with 2 points). Copy it onto tracing paper and cover the reverse with graphite as regular if you want to transfer a more complex style onto metal. Then before moving to the metal surface, rub it over lightly with Plasticine so that a sticky film is left, which will show up the pencil marks created when you re-trace. As soon as you have re-traced the design onto the metal, eliminate the tracing paper and discuss the pencil lines with a scriber.

Bench Mounted Pillar Drill: This is the supreme drilling tool and is used for solely that purpose. A sturdy base is integrated with a movable chuck mounted on a column, which is managed by a lever at the side. The base can facilitate a clamp to hold work safely helping to make sure a precise outcome every time.

The drill keeps moving around and wont discover its position: Make sure you have marked the drilling position clearly with a small damage to assist the drill. Make sure the drill is fitted correctly into the chuck, it might not be straight. Above all, make sure the drill itself is fully upright.

Sawing curves: Curves call for 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 force the blade.

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

Piercing a gain access to hole for sawing:.

Troubleshooting:.

My drills keep breaking: A blunt drill bit will break more quickly, as we instinctively use more pressure if it doesnt appear to be cutting. They are likewise prone to breakages if not protected correctly in the chuck.

Once 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 appropriate drill size to correspond with the saw blade you intend to use, (please refer to chart) and insert into the chuck making certain it is grasped tightly.
Drill the hole. Start slowly making certain the drill bit has actually discovered its position. As soon as in position increase the speed and push down with a constant but mild pressure until all the method through..
Now, reverse your saw blade at the clamp nearest the handle 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.
Get rid of the saw by un-clamping the blade nearest the manage once again when sawing is complete.
Submit to finish.

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

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

Rotary Hand Drill: Rotary hand drills have the motor contained 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 broad range of accessories. Rotary hand drills can be used in combination with a drill stand to guarantee vertical drilling.

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 products and range in size from 0.3 mm upwards. Drills can end up being blunt surprisingly quickly so its suggested to purchase multiples of the sizes you use most regularly.

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 need to face you and the blade clamps must be at the top of the frame.
Position your blade with the teeth at the top, pointing towards you and clamp the end furthest away into your frame using the wing-nut. (Do not be lured to tighten with pliers as this deteriorates the screw thread).
Then push carefully versus the manage with your chest which will trigger the frame to flex, and tighten up the 2nd wing-nut to secure the blade.
Release the frame and check the stress of the blade by plucking it. (Failure to secure your blade with the right stress will result in it breaking as quickly as you start to saw).

Archimedian Hand Drill: This is a little spring loaded drill, which works using a deal with at the top which is lowered and drew back as much as rotate the chuck at the pointer. This requires both hands to use efficiently.

Why Pierce? When you need access to an area which would otherwise be impossible or challenging 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, enabling you to saw from the within out, rather than the outdoors in.

Save this for later.

My saw blades keep breaking: Dont anguish this is perfectly regular and practise makes best. Examine the tension of your blade for slackness and make sure you are utilizing the appropriate blade size/metal mix.

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

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 been some brand-new advancements in frame design over the previous few years and it is now possible to purchase more advanced variations which create the tension in the saw blade for you. Rather the stress is created via 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 selection of grades which range from really coarse to very 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, enabling you to saw from the inside out, rather than the outdoors in.

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

My saw blades keep sticking: Apply some type of lube to relieve the sawing movement. Some jewellers use spittle, but you can also utilize beeswax. Simply run it along the blade and continue to saw.

Beginning to Saw:.

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