Cordless Metal Cutting Tools

That's cute.....

The first time I saw a Panasonic EY3530 Metal Cutting Saw, I thought, "that's cute, but I can't see that thing being of any real use on the job". I was wrong. If you visit any job you will see cordless metal cutting saws in use in almost all of the trades.

What are they?

Cordless metal cutting saws are simply a cordless circular saw turning a carbide tipped metal blade at the appropriate rpm. These saws typically have an extra guard to help with the metal shavings. These saws cut mild steel very clean and cool. One of my favorite stories is that of a sales rep walking into a customers office and cutting off a piece of threaded rod with the tool and threading a nut on, before the customer could through him out. He sold many, many tools that way.

What can they cut?

Cordless metal cutting saws can cut most mild steel including threaded rod, unit-strut, metal siding, EMT pipe, duct work, really any mild steel. Blades are available for aluminum also. I have heard them being used on copper, not sure that it is recommended though. By for the most common use is for cutting threaded rod, strut and EMT. If you are cutting mostly thin metal, blades are available with more teeth that will give you a better cut.

Who makes them?

The most popular saw is the Panasonic EY3530 Metal Cutting Saw but you can find them from , DeWalt, Milwuakee, Makita and others. If you already have a cordless circular saw, you can buy carbide tipped blades for most saws, Tenyru is among the biggest supplier of this type of blade. I still think the tools specifically designed as metal cutters do the best job as they are set up just for that, but many of my Bosch customers have had good success with a carbide tipped metal blade on their saw.

Give them a try.

Many cordless power tool manufactures have a 30 day no questions asked return policy. I have offered this to many customers, but once they see what these tools can do, I don't get a single tool back. Give the Panasonic EY3530 Metal Cutting Saw a try.

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Oxy Fuel Safety - Using a Cutting Torch the Right Way

Oxy fuel safety is something that is taught by few and ignored by many. But ignoring basic oxy fuel cutting torch safety principles has resulted in many injuries and even fatalities. According to OSHA's own publications, the risk of from fatal injuries using this equipment is around 4 deaths per thousand workers over a working lifetime.

That's a lot! Especially if you are one of them.

The term "Oxy-fuel" refers to welding, brazing, and cutting equipment that uses a fuel gas like acetylene, map gas, propane etc. AND oxygen. Torches that use fuel and plain air do not pose the same risks that are present when using oxy fuel equipment where fuel is mixed with oxygen to produce a much hotter flame than can be achieved using only fuel and air.

These are only a few of the many safety principles you must follow when cutting with an oxy acetylene or oxy fuel torch. Pay close attention to these tips and you will be safer and your cuts will be better too.

1. Never cut on or apply heat directly to a concrete surface.

Concrete contains water, that is trapped within the material. Heat will cause the water to expand. This expansion will cause pieces of the concrete to explode.

2. Clean cutting tip orifices carefully.

The little pre-heat flames are important to keep clean, to prevent tip overheating and maximize time to bring steel to kindling temperature. It is critical that the cutting oxygen orifice is kept clean and smooth. Any roughness will dramatically effect cut quality. So if you don't have a tip cleaner, Get one!

3. Be aware of sparks - use the Good Neighbor Policy.

Cutting may produce sparks that can fly a considerable distance. Protective screens are advisable, especially if working in a confined area.

4. Use the right size tip. Each manufacturer is different but fortunately most torch makers post tip chart data online. Smith and Victor both have online tip chart information.

Turning down the torch valves to cut thinner metal is not good practice and will allow for an unsafe soft flame that will flashback and pop.

5. Where are your hoses?

Before heating or cutting, be sure to check for the location of the hoses that supply gases to your torch. Double check to insure that no slag, or workpiece will fall directly onto the hoses.

A thorough Oxyfuel safety training course is necessary to address all of the dangers associated with using oxy fuel welding cutting and brazing equipment. Smith Torch company offers an excellent training DVD that is very affordable.

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Accurate Plasma Cutting Requires the Right Plasma Cutter

A high-precision, solid, heavy-duty CNC Plasma Cutter starts with a design that is created specifically to be the most stable platform possible for accurate plasma cutting. By building a plasma cutter with accuracy, stability, speed and durability as a goal, you will end up with a machine that will outperform and outlast it's competition.

Does heavy-duty or fully-welded really matter? Is accuracy over the lifetime of the machine important? Yes! When the base of the machine does not move during the cutting process, the plasma torch is able to deliver incredible accuracy. This is accomplished by starting with a super solid, fully welded base. Bottom line - You need professional grade machinery to produce professional grade products.

The components that make up a highly accurate, heavy-duty plasma cutter need to be designed to work as a unit. Mismatched components may make for a lower cost machine, but the cut quality will suffer. Matched components eliminate repeated set-up adjustments that slip or wear over time, especially under heavy use.

Pairing a heavy-duty cutting table with precision machined components and state-of-the-art software, results in a CNC plasma cutter that is capable of amazing precision. Adding a properly matched plasma torch system provides very high cut quality to any shop. This means accurately cut parts with crisp, smooth edges, eliminating the need for secondary operations that add additional time and cost to each and every project.

The plasma torch, the business end of the cutter, also requires special consideration. It will need to be matched to your applications. Tight integration of the torch and controls with the software will provide high productivity and reliability. All must be present to realize the full potential of a top quality, highly accurate plasma cutter.

The CNC software package needs to be state-of-the-art. It will need to be easy to use, easy to configure and flexible. By having the latest automation features, it will be able to provide the high productivity and reliability you are looking for. Automatic true shape nesting software is another key component that will allow the full potential of a top-quality plasma cutter to be realized.

Whether you are involved in shape cutting, metal fabrication, or metal working, a heavy duty, a fully unitized plasma cutter is your best choice.

It will enable you to cut with maximum efficiency. Plasma cutting machines must be able to hold their advertised tolerances today and, more importantly, for many years to come. Only a well designed and well built plasma cutter will do this for you.

Even in slow economic times, it can be a mistake to be penny wise and pound foolish. Can you afford to buy cheap? Buying quality is never a mistake.

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Affordable CNC Plasma & Laser Cutting Machine

The plasma cutting process uses high velocity as well as high temperature ionized gas along with an arc, to cut different types of materials.

Plasma cutting process

The plasma cutter torch has a high velocity ionized gas that conducts electricity, which is used to heat the work piece and eventually melts the material. While the purpose of the arc is to melt the material with its high heat, the function of the gas is to blow the molten material away from the piece and cut the material. Due to the force of the plasma, you get a clean cut with very little or no slag at all. The plasma arc roughly has a speed of up to 20,000 feet per second (that's more than 13,000 miles per hour!) while the temperature is as high as 30,000º F.

Different types of Plasma cutting machines

Plasma cutting machines are available in a variety of types such as plasma torches, plasma torches, and plasma cutters. Compressed air or nitrogen is used as a cutting gas in plasma cutting torches. The torches have a narrow-width kerf along with a water-cooled electrode. Plasma torches use a high temperature gas steam, which is produced by passing the gas through an electric arc discharge. The plasma torch has two electrodes that are metallic and tubular in nature. The electrical arc flows between the negative or positive electrodes. Plasma cutters are specially used for cutting steel and materials that conduct electricity.

Advantages of Plasma cutting machines

- They provide high quality cuts and fast travel speeds.

- It is a low cost process for short runs as no physical tooling is required.

- A cost effective option for thick metal sheets.

- As compared to laser cutting can cut thicker sheets.

- It can be used to cut a wide variety of geometric shapes along with 2D shapes that do not require too much precision.

Specifications

The process can be used on ferrous and non-ferrous metals and requires only software tooling. It helps to reduce cost by reducing total cut length. At times, some warping may occur on complex parts. The cut edge is somewhat roughened and may show the presence of an oxide layer. Further, the plasma cut surface may not be precisely perpendicular to the surface of sheet material.

eMachineShop offers you information about various types of CNC machines along with other cutting techniques such as Plasma cutting and Laser cutting. Visit the site http://www.eMachineShop.com to design and order custom plasma cut parts today!

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Acetylene and Oxygen Cutting Torch - OSHA Says Oxyfuel Safety is Part of Welding Safety

Two Oxyfuel Safety Horror Stories - and one of them could have been a tragedy.

Story #1

A worker was returning from a lunch break and preparing to complete his task of cutting a truck u joint with an oxygen acetylene torch.

He turned on the Acetylene valve and then proceeded to open the valve on the oxygen tank. The oxygen regulator exploded which then saturated his shirt with oxygen. His shirt ignited and burn him severely on his torso. The cause of the accident was determined to be Regulator Burnout or RBO caused by the worker not bleeding down the pressures when he left for lunch.

Story #2

A worker was preparing for July 4th festivities by filling latex gloves with an oxygen and acetylene mixture. His plan was to be the hit of the neighborhood by lighting these latex glove bombs later that night. As he was carrying an armload of the explosive latex balloons, a static spark from the latex rubbing together made them all explode. A burned chest, some permanent hearing loss, and dislodged kidney stones that he wasn't even aware of were the price for stupidity that day. Had they ignited in the trunk of his Camaro, which is where he planned to put them, he would probably not have survived.

Oxyfuel equipment is dangerous.

Story #1 is understandable but entirely preventable by using known oxyfuel safety principles

Story #2 is natural selection at work. There is no excuse . And yet I sometimes see YouTube videos of people filling balloons with oxygen and acetylene and I think to myself "Holy Crap, they are all going to Die!"

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Laser Cutting Tools

There are various laser cutting tools depending on the type of finished product that you prefer.

Laser cutter routers that are computer-driven can cut each letter precisely, capturing every detail of the selected style. The said manufacturing systems are useful in cutting out symbols and logos in a cost effective manner.

Laser that is in a solid state uses one crystal rod with flat and parallel ends. Both ends have surfaces that have the ability to reflect. A light source that has high density and a flash tube surrounds the crystal.

When power is given by the network of pulse-forming, an intense light pulse called photon is released in one of the rod crystals. The light released is one wavelength and allows for minimum divergence.

A hundred percent of laser light is reflected on the rear mirror while thirty to fifty percent will pass through the mirror then to the shutter assembly to the angled mirror before going down through the lens and then to the work piece.

The laser light beam is not only coherent but also has high energy content. When it is focused on the surface, the laser light creates heat used for welding, drilling, and cutting.

The laser beam and the work piece is manipulated through the use of robotics. It can be adjusted to different sizes and heat intensity. The smaller laser is used for drilling, cutting, and welding while the larger machines are used in off giving heat.

One of the advantages of laser cutting is that cutting lubricants are no longer required. Also, this procedure boasts of very fine width of cut and thermal input with a narrow zone affected by heating.

So choose from various types of laser cutting tools to give you the results that you want.

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Midway Kitchen 7 X 11 Novelty Gift Cutting Board - Torch of Love

• 11-Inches by 7-Inches by 3/4-Inches
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A unique cutting board with a fun saying carved on one side and a very usable cutting surface on the other. Crafted of Eastern Hard Maple the boards are extremely durable yet easy on your knife blades. Sealed with food grade mineral oil they come ready to use. The perfect gift for anyone with a love of cooking and a sense of humor.










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Cutting and Lighting Your Cigar

The Doc addresses the question of how to properly cut and light a cigar. While cutting and lighting a cigar may seem like a simple matter, there are a few tips that can help you to better top and torch your stogie.

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How to Use Oxy Fuel - Oxygen Acetylene - Cutting Torch Equipment Safely

An oxygen acetylene torch flame is around 6000 degrees F. Considering Steel melts at around 2800F that is pretty freakin hot!

You can make a lot of things happen with an oxygen acetylene torch kit. You can braze air conditioning line sets, solder copper water pipe, silver braze stainless steel, weld 4130 chromoly tubing, and even heat and bend metal thicker than 1 inch. But oxy-fuel torches can be extremely dangerous if not used properly. OSHA even requires employers to ensure workers that use oxyfuel equipment to be properly trained and qualified for oxy-fuel welding, cutting, heating, and brazing. (see 29 CFR 1910.252)

From my 30 plus years in the welding field, I am constantly surprised by the lack of training in the safe operation of oxyfuel equipment.. Even seasoned welders are often deficient in use of oxygen acetylene torches unless they have received hands-on training where demonstration of proficiency was required

Safe operation of oxygen acetylene equipment requires training, willingness to follow basic safety guidelines, and understanding some basic safety principles:

o Oxygen cylinders are pressurized to over 2500 psi and can become a projectile if knocked over. Always , always, always keep the cap screwed on when the cylinder is not secured.

o Acetylene cylinders are filled with acetylene gas compressed into a porous substance saturated with liquid acetone. They should remain upright to prevent liquid acetone from damaging the regulators and restricting gas flow. If you have to lay them down to haul them, let them stand upright for a while before using.

o Never transport or store cylinders in an enclosed space (i,e, trunk of car, or truck tool box) Welding supply stores often display pictures of cars demolished by the explosion of oxygen and acetylene cylinders hauled in the trunk of a car. They even make you sign a waiver if you want to haul cylinders yourself.

o Never use damaged equipment.

o Always open oxygen cylinders very slowly. Opening them quickly is very dangerous and can cause the regulator to explode. Yes I said explode. (if you don't believe me, just Google "regulator burnout")

o Use check valves or combination check valve/flashback arrestors to prevent reverse flow of gases and to prevent mixing of gases.

o Never use oil on any part of the equipment. Oil in the presence of pure oxygen can ignite easily

o Always bleed down the gases and back out the regulator screws when finished using the torch

There are several different manufacturers of oxyfuel equipment: Victor, Smith, and Harris are 3 of the main brands and each designs their equipment differently with certain features in mind. So the operation of each manufacturer's torches is different. Always follow the manufacturer's instructions.

The first thing to do when preparing to operate a oxyfuel torch is to inspect the equipment. Make sure the cylinders are fastened securely to prevent them from falling over.. Next, inspect the hoses to make sure they are not cracked or dry rotted. Feel the brass connectors to make sure they are all tight and ensure the cylinders valves are closed with the regulators reading zero.

If the regulators are not reading zero, one of two things is wrong: The gauge or gauges have been damaged or the previous user failed to bleed the pressure from the line. To release the pressure , open the appropriate valve on the torch and turn the regulator screw clockwise until the needle moves to zero. If the needle does not go to zero, the gauge is damaged and must not be used.

If the gauges are determined to be operating properly the next thing to do is make sure the regulator screws are backed out where you cannot feel spring pressure on them.

Here is a simple ABC, 123 checklist to use for setup and shutdown of oxy-fuel equipment.

o Wear proper Personal protective equipment i.e. shade 3 to 5 ANSI eyewear, gloves etc.

o Inspect the equipment for : Overall condition of hoses, zeroed gauges, check valves, torch, chains on bottles

o If gauges are not reading zero, purge lines to let gauges zero out

o If gauges are damaged replace them

o Open oxygen cylinder valves very slowly. (This is the most important step on this page)

o Select proper tip according to manufacturers guidelines

o Use manufacturers tip chart to determine pressure settings

o Set gauges

o Purge lines individually

o open acetylene torch valve to ¼ turn and Light torch

o Increase acetylene flame high enough to where soot disappears.

o Add oxygen to flame until blue cones define creating a neutral flame.

o Perform work

o Extinguish flame by turning off gas valves on torch (manufacturers differ on whether to turn off acetylene or oxygen first.)

o Turn off cylinders

o Purge lines

o Once gauges are zeroed, back out regulator screws

o Return torch to storage place

o Secure oxy-fuel equipment for next user

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