A Guide to Sawing & Piercing

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Sawing

Another choice you require to make when purchasing your frame is whether you desire an adjustable or a fixed design. An adjustable frame enables you to modify the size to accommodate damaged blades where as a fixed style will just take standard size blades as they are sold.

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. 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 small scale jobs, but the choice is down to personal choice.

There have been some new advancements in frame design over the previous couple of years and it is now possible to acquire advanced variations which develop the tension 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. Rather the tension is produced through 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. These specific clamps can also be turned 45 degrees which helps with sawing into challenging locations.

Many of us are familiar with the concept of sawing wood, numerous find metal a little unstable at initially, which is why we have actually put together this guide. Our goal is to assist you with both tools and technique, which will, (in addition to some perseverance and practice), begin you off on the appropriate course to successful sawing every time.

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 vary from really coarse to exceptionally great. The table listed below includes all the info you will require to choose 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

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 5/0
0.2
28
0.4
0.4 to 0.55

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

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

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

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

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

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 4/0
0.22
26.5
0.5
0.5 to 0.6

Saw blade Grade 3
0.36
16
0.8
0.9 to 1.2

Setting up a blade into a saw:

Repairing:.

My arm is injuring: Check your seating position is proper and attempt to unwind. Dont be lured to force the saw, you are just guiding it so let the blade will do the work.

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

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 facing forward, and you must be seated so that your working area 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 till you have a little indent to assist the blade.
Now start to gently move the saw up and down remembering that the blade cuts on the downward motion and merely re-positions on the upward. If you are having problem getting the blade to bite you can apply some beeswax which is offered in blocks, to help relieve the movement.
Saw on the exterior of your significant line and try to keep a gentle and stable action.
As soon as the cutting is complete, reverse the clamp at the top of the saw and pull the frame to eliminate it from the work, or simply bring it back along the cutting line if that is possible.
Submit the rough edge to complete.

Repairing:.

Sit at your bench with your saw frame supported in between your chest and the edge of the bench or the V of your bench peg. The wood handle must 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 the end furthest away into your frame utilizing the wing-nut. (Do not be tempted to tighten with pliers as this damages the screw thread).
Then push gently against the handle with your chest which will cause the frame to bend, and tighten up the second wing-nut to secure the blade.
Launch the frame and inspect the stress of the blade by plucking it. You are searching for a distinctive ping to reveal the tension is proper. If you dont hear the ping just undo and repeat the process again until its. (Failure to secure your blade with the best tension will lead to it breaking as quickly as you start to saw).

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 use cordless. They have the very same multi-purpose functionality of a pendant drill and can be utilized with a wide variety of accessories. Rotary hand drills can be used in conjunction with a drill stand to ensure vertical drilling.

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

Why Pierce? When you require access to an area which would otherwise be hard or impossible to reach e.g. the centre of a circle, piercing is required. By drilling a little hole you provide 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.

As soon as your style is scribed onto the metal, recognize a position within the waste product to drill a suitable hole.
Mark the position with a scriber or centre punch.
Select the proper drill size to correspond with the saw blade you plan to use, (please describe chart) and insert into the chuck making sure it is grasped firmly.
Drill the hole. Start gradually making sure the drill bit has discovered its position. As soon as in position increase the speed and push down with a mild however constant pressure till all the method through..
Now, reverse your saw blade at the clamp nearest the deal with and thread the blade through the hole from the top. Once through, re-clamp your blade making certain the tension is proper.
Saw out your shape.
As soon as sawing is complete, eliminate the saw by un-clamping the blade nearest the manage again.
Submit to end up.

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

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 used in conjunction with a hammer to mark the position for subsequent drill holes. It is likewise possible to get automatic centre punches which do not require a hammer and instead have a push button action.

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

Saw frames: A jewellers saw frame is comparable in design to a small 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 previous few years and it is now possible to purchase more innovative versions which produce the stress in the saw blade for you. Instead the tension is produced through 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 offered in bundles of 12, or by the gross (144) and come in a choice of grades which range from really coarse to extremely great. 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 outside in.

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

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

Piercing.

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. Stopping working that, merely stop and permit the tools to cool down.

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

Bench Mounted Pillar Drill: This is the supreme drilling tool and is utilized for exclusively that function. 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 guarantee an accurate result each time.

The most important thing to remember when drilling a hole is to keep your drill bit upright and totally vertical. Chucks are either totally adjustable to take all sizes of drill or interchangeable, indicating you will need to alternate to accommodate various drill bits.

My drill isnt cutting: If the drill bit will not bite it may be since 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 suitability prior to you buy.

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Beginning to Saw:.

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 require the blade.

Marking out and measuring: Before starting to saw, your metal should be clearly significant and determined so you have a guide to work to. Lines can be scribed onto metal using a scriber or a set of dividers (which are similar to a compass but with 2 points).

Piercing an access hole for sawing:.

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

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

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

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