A Guide to Sawing & Piercing

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There have actually been some new advancements in frame design over the previous few years and it is now possible to acquire more innovative variations which create the stress in the saw blade for you. One such design is from a company called Knew Concepts who have a series of light-weight aluminium frames which do not flex. Instead the tension is created 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. These specific clamps can also be turned 45 degrees which helps with sawing into tough locations.

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 held in location by wing-nut clamps at either end of the saw which are tightened by hand. 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. A 3 inch frame is an excellent general function size for little scale projects, however the option is down to individual preference.

When buying your frame is whether you want an adjustable or a set style, another decision you require to make. An adjustable frame permits you to modify the size to accommodate broken blades where as a fixed design will just take standard size blades as they are sold.

Sawing

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

Saw blades: Blades for a jewellers piercing saw are sold in bundles of 12, or by the gross (144) and come in a choice of grades which range from really coarse to very great. The table listed below includes all the details you will require to pick the right blade for the metal in question:

Saw blade Grade

Blade Thickness mm

Teeth per CM

Drill Size mm

Recommended gauge Of metal mm

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

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

Saw blade Grade 1
0.3
19
0.7
0.8 to 1.0

Saw blade Grade 4
0.38
15
0.8
1.0 to 1.3

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 6/0
0.18
32
0.4
0.35 to 0.5

Saw blade Grade 3
0.36
16
0.8
0.9 to 1.2

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

Saw blade Grade 8/0
0.17
30
0.3
Up to 0.4

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

Setting up a blade into a saw:

My drill isnt cutting: If the drill bit wont bite it might be since 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 inspect their viability before you buy.

When your design is scribed onto the metal, determine a position within the waste material to drill a suitable hole.
Mark the position with a scriber or centre punch.
Select the appropriate drill size to correspond with the saw blade you plan to use, (please refer to chart) and insert into the chuck making sure it is gripped firmly.
Drill the hole. Start gradually making certain the drill bit has actually found its position. Once in position increase the speed and press down with a constant however mild 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. As soon as through, re-clamp your blade making sure the tension is proper.
Saw out your shape.
As soon as sawing is total, remove the saw by un-clamping the blade nearest the manage again.
Submit to finish.

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

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, merely stop and enable the tools to cool off.

Seat yourself at the bench and hold the operate in position on the bench peg, holding the saw in your opposite hand.
Your saw must be held 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 outside of your significant line and gently draw the blade down. Get rid of the saw and repeat a couple of times till you have a little indent to direct the blade.
Now begin to carefully move the saw up and down bearing in mind that the blade cuts on the down movement and merely re-positions on the upward. If you are having problem getting the blade to bite you can apply some beeswax which is sold in blocks, to help reduce the movement.
Saw on the exterior of your significant line and try to keep a consistent and mild action.
As soon as the cutting is total, reverse the clamp at the top of the saw and pull the frame to remove it from the work, or simply bring it back along the cutting line if that is possible.
File the rough edge to finish.

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

The drill keeps moving and will not find its position: Make sure you have marked the drilling position plainly with a small dent to guide the drill. Make sure the drill is fitted correctly into the chuck, it may not be straight. Above all, guarantee the drill itself is completely upright.

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

Drill bits: The most typical kind of drill bits are twist drills which cut when rotated 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 remarkably quickly so its suggested to purchase multiples of the sizes you utilize most often.

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

Why Pierce? Piercing is required when you require access to a location which would otherwise be difficult or tough 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 outdoors in.

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

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

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

Defining and measuring: Before beginning to saw, your metal must be clearly significant and measured so you have a guide to work to. Lines can be scribed onto metal using a scriber or a set of dividers (which resemble a compass but with 2 points). If you desire to transfer a more complicated design onto metal, copy it onto tracing paper and cover the reverse with graphite as typical. Before moving to the metal surface, rub it over lightly with Plasticine so that a sticky movie is left, which will show up the pencil marks developed when you re-trace. Once you have actually re-traced the design onto the metal, eliminate the tracing paper and go over the pencil lines with a scriber.

Piercing a gain access to hole for sawing:.

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

Troubleshooting:.

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 stress. There have actually been some brand-new developments in frame design over the past few years and it is now possible to buy more advanced variations which produce the tension in the saw blade for you. Instead the tension is produced 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 very coarse to extremely fine. By drilling a little hole you supply access to the saw blade which can then be fed through and re-clamped into the frame, allowing you to saw from the within out, rather than the outside in.

Bench Mounted Pillar Drill: This is the supreme drilling tool and is used for entirely that purpose. A sturdy base is integrated with a movable chuck installed on a column, which is managed by a lever at the side. The base can help with a clamp to hold work securely assisting to ensure an exact result each time.

Repairing:.

My saw blades keep breaking: Dont anguish this is completely typical and practise makes ideal. However, examine the tension of your blade for slackness and make certain you are utilizing the proper blade size/metal mix.

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 manage 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 the end furthest away into your frame utilizing the wing-nut. (Do not be lured to tighten with pliers as this weakens the screw thread).
Push carefully against the handle with your chest which will cause the frame to bend, and tighten up the second wing-nut to secure the blade.
Release the frame and inspect the stress of the blade by plucking it. You are looking for an unique ping to show the tension is correct. If you do not hear the ping just reverse and duplicate the procedure again up until its best. (Failure to secure your blade with the best tension will lead to it breaking as soon as you begin to saw).

My arm is hurting: Check your seating position is proper and attempt to unwind. Do not be lured to force the saw, you are just guiding it so let the blade will do the work.

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 controlled by a foot pedal and can be used with a substantial series of various accessories consisting of drill bits.

Bow drill: A bow drill is a conventional hand drill which can be used with one hand. It has an easy twisting system which is created with a pull/push movement using a wooden baton and a piece of string. It is simple to manage and is perfect for a beginner.

Starting to Saw:.

Piercing.

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Archimedian Hand Drill: This is a small spring filled drill, which works utilizing a deal with at the top which is lowered and pulled back up to turn the chuck at the tip. This requires both hands to utilize effectively.

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