Delta Bandsaw
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Something About Delta Bandsaw
Delta Bandsaw: When it comes to home workshops Craftsman, Delta, and Lenox are among the most popular name and it’s not necessary to look beyond these at all.
The first thing to consider is of course your budget, but the good news is, you can probably find a reliable bandsaw in your price range.
Delta is famous for it’s line of good quality band saws with clean, simple cuts. Their prices are among the lowest for basic and durable band saws.
From The very beginning Delta is a good starter saw, It’s easy to assembly and to use. Also their band saws are solid choice for professional use on a budget.
Compared to craftsman Band Saws they are not as easy to clean and they do make a lot of sawdust but still their quality and price make up for these little shortcomings.
Many professional woodworkers recommend immediate replacement of the bandsaw blades but make sure you consult your dealer because not all blades are interchangeable and not all delta blades will fit delta band saws.
Though their smaller Band Saws like 9″, didn’t earn favorable reviews like larger and more expensive models. 14″ is a perfect Band Saw for any type cuts especially for hard woods while the 9″ inch delta Band Saw could be more than enough for cutting soft woods .
For more complex cuts ( hard woods like oak, walnut, or mahogany), the 14-inch Delta is a perfect choice. For simple cuts and soft woods ( pine ), the 9-inch delta band saw may be all that you need. Also, even though Delta motors are not rugged and strong enough for every day hard use in professional shops, for most hobbyists, the Delta motor is more than adequate.
Generally Deltas band saw earn very high marks for being rugged and accurate, regardless of price. More expensive Deltas ( above $800 ) are likely to exceed your expectations, but even the cheaper models ( up to $100 ) are able to satisfy many hobbyists.
Many of the larger Delta saws offer an optional wheel set. Wheel set is a smart investment if you need more elbow room when you’re working or if you are about to work with big pieces of wood that need extra support.
Setting up is easy and quick, but it’s recommended to have someone to help you because the parts are quite heavy. You won’t be needing anyone for blade because it’s quite easy and it doesn’t take much time.
If you are on a limited budget or you are a beginning woodworker Delta band saws are a perfect choice.
Bandsaw Blades
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The proper blade for Bandsaw will give a better cut and make the job much easier and safer. There are 3 types of blade materials:
1. Bi-Metal
2. Hardback carbon
3. Flexback
Carbon blades
This is an economical blade made of flexible high carbon steel and it’s best To use it on high speed wood cutting saws. The teeth are heat treated to resist wearing and maintain sharpness. The body of the blade is soft enough and yet not too brittle. Carbon Hard Edge Flexback blades are used primarily for cutting wood and soft metals (aluminium and mild steel)
Bi-Metal blades
Just like the carbon steel blades, Bi-Metal blades have hard teeth and softer band. Bi-Metal blades are designed for cutting hard woods and all metals (from mild through stainless steel), basically for all tough materials where higher abrasion and temperature conditions are encountered. A piece of cobalt steel is laminated to a spring steel band which creates a blade that can withstand very high temperatures (operating cutting temperatures of 1000°F) and maintain tooth sharpness.
Carbide Tipped blades
Carbide is attached via ball and socket to the tip of each tooth. Carbide is then ground sharp. With it’s precision triple chip ground teeth Carbide tipped blade will outlast all others when cutting abrasive materials. Carbide tipped blades are harder than Bi-Metal blades and are ideal for re-sawing hard, abrasive or exotic woods. Carbide tipped blades will cut difficult materials such as stainless steel, titanium alloys and tool steels.
Beside Blade material you should pay attention to a few more things when buying new Bandsaw blade:
1. Blade Length – Simply measure the length of the blade needed.
2. Blade Width – It is important to use the correct width of the blade (recommended by the manufacturer) for your band saw. Usually you can use smaller width but under no circumstance you should go wider. A wide blade gives you more stability and a straighter cut. Narrower blade gives you tighter radius. In principle, the wider the Band Saw blade, the higher its beam strength and the better it can maintain straightness.
3. Blade Thickness – You should try to stay with the same thickness to avoid having to make adjustments when changing blades, because some blades of the same width come in different thickness. If you need to adjust your saw to different thickness follow the instructions for adjusting.
4. Pitch or Teeth Per Inch – To determine the number of teeth per inch, measure one inch of the blade from gullet to gullet and count the number of full teeth between them. This only works on constant pitches. Blades with more TPI (teeth per inch) will make a smoother cut but the blade will cut slower, a blade with fewer TPI will cut quicker but it will leave a rougher finish. For example for resawing, you need an aggressive blade, ( few TPI and as wide as the saw will accommodate).
The general rule is to have at least 3 teeth in the material at all times and run as wide a blade as possible for the particular job.
To prolong the life of your Band Saw blades and to stop them from wondering while cutting you should pay attention to the tension, and follow the instructions. According to many woodworkers it’s always better to add a bit more tension than indicated.
If you use your Band Saw to cut metal, you need a good cutting fluid for almost all materials. Cast iron should be cut dry and aluminum should be cut with power paraffin. You can choose between water soluble fluids or a neat cutting fluids.
Tooth forms in Band Saw blades are:
Raker tooth (S) – available in constant tooth pitches of 3-32 tpi blades and in the variable tooth pitch blades of 3-4 tpi to 10-14 tpi. Blades with this tooth form are suitable for short clipping materials (steel or cast iron) and small cross sections.
Hook tooth (K) – on blades with constant tooth pitches of 0.75-6 tpi and in blades with variable tooth pitches of 0.55-0.75 tpi to 4-6 tpi. Blades with this tooth form are suitable for long chipping tough materials, non ferrous metals and steels with a carbon content smaller than 0.8%, strong structural, rust resistant steels, acid resistant steels and large cross sections
Skip tooth (L) – on blades with constant tooth pitches of 2, 3, 4 and 6 tpi. Blades with this tooth form are suitable for fragile or brittle materials and large cross sections.
Trapezoidal tooth (T) – on blades with variable tooth pitches of 0.85-1.15 tpi to 3-4 tpi. Blades with this tooth form are suitable for high band sawing demands.
Bandsaw Basics
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Basic Informations about Bandsaw
Bandsaw is salarge saw used for wood or metal cutting as well as for other materials. It has long, narrow, flexible blade( a narrow band of toothed metal that rides on two large wheels ) from which it’s name comes from .
It’s capable of ripping, cross cutting, beveled cuts and, curve cutting among other things.
They come as manual or fully automatic models with pedal-drive or electrical motor. Band Saw blade speed ranges from 40 feet to 5000 feet per minute.
There are two main categories when it comes to Bandsaws:
Metal Cutting BandSaws – with coolants to keep the blade cool and wire brush wheels clean the blade from chips and buildup metal.
Large BandSaws – they are used in timber mills for ripping because they have smaller kerf – (cut size).
Metal cutting Band Saws:
Fall mechanisms:
Pivot saws – it hinges in an arc shape as it advances through the material.
Single Column saws – the saw rides up and down on column.
Dual column saws – the saw is between two large columns that provide the needed support for presize work.
Feed mechanisms in Band Saws.
Gravity feed – saw falls under it’s own weight against a hydraulic cylinder with control valve. Gravity feed is usually used for small saws.
Feed mechanism used in Hydraulic feed saws – a positive pressure hydraulic piston pushes the saw through the material. It’s used mostely in production saws.
Screw feed – So called leadscrew moves the saw.
Automatic Band Saws are very practical and easy to use. You usually need one operator to feed and unload several saws. This is why they are mostly used in environments where you can’t have one operator per saw.
Large Band Saws:
Head saws are large band saws used to make the initial cut in a log. There’s a line of sliver teeth on the back. They are not used for cutting but to wipe slivers out of the way of the blade. Tooth space on the blade is between two and three inches.
Resaws – Band saws are fully capable of resawng and are much safer than the circular saw because there is no kickback. Band Saw is also much more efficient because it cuts faster and the waste is minimal.
Double cut saws are very large band saws with cutting teeth on both sides.