Lathe Drill

Lathe Drill

Lathe Drill

Lathe Drill

One of the best and worst things to happen to modern woodturning is the invention of the four jaw chuck for holding wood. While it is a great addition to the woodturner’s arsenal, it is also an expensive tool and many beginners find that it costs more than their wood lathe. Also, like many tools a cheaper version is aggravating and in some cases simply dangerous to use. One thing to remember is woodturning has been around for thousands of years and there are many ways to mount the wood without the newest fashions. The Jacob’s chuck is a great tool for all turners.

A Jacob’s chuck is designed for holding drill bits. It is the chuck on the end of the drill press or the electric hand drill. As such it is often used held in the tail stock of the lathe to hold a drill bit for putting a hole in a piece of wood in the head stock or vice versa. However, it may also be used to hold a piece of wood for turning.The difficulties in using a Jacob’s chuck for holding wood are

1. its size which is generally limited to one half inch although slightly smaller or larger ones are available for some lathes

2. it’s having three jaws which make it awkward to hold onto a square piece of wood

3. it is made for holding metal and may well crush the wood in its jaws

These limitations are easily dealt with.

The time to use a Jacob’s chuck is generally to turn a spindle that needs to be held on one end only. This means that the stronger grain orientation of long grain is being used as opposed to face grain. In such circumstances a piece of one half inch wood such as maple is easily strong enough to support a three inch spindle of reasonable length. It remains to mount the spindle first between centers and turn it round, allowing for a short length at one end to be turned down to one half inch so as to fit in the chuck. Now it can be remounted in the chuck, trued up and finish turned.

Note that this also removes the second difficulty of trying to fit a square piece of wood into a three jaw structure. The tenon to fit the chuck is now round. It also deals with the third problem of crushing the wood. This would serve to mar the wood and also to move the piece off center for turning. A truing cut will put it back on center and the tenon is considered waste wood and removed from the finished piece.

The old and established technology of the Jacob’s chuck is not as versatile as the newer four jaw chuck but it is reliable at a much lower cost and opens new avenues of wood turning to the beginner without a lot of expenditure. Besides which, a Jacob’s chuck is a welcome addition to every turner’s arsenal

Surface Grinder and CNC Machine

Grinder

Grinder

Grinder

If you are using an angle grinder on difficult, sticky floors and it is slowing down so much that you smell the motor burning do not stop the grinder or it will burn out! The motors are very powerful, but they generate a lot of heat. They have a strong fan inside that sucks air in around the back handle and blows it out the front of the grinder to keep the motor cool. Grinder 

Machine Shop

Machine Shop

Machine Shop

According to the US Census there are over 25,000 machine shops with less than 4 employees, not counting thousands of 1-man operations scattered across the country. Making a profit while owning a small machine shop can be tough in these economically depressed times. Here are some tips on making a profit. Machine Shop 

Machine

Machine

Machine

Kwality Engineering Corporation, Ashton Green & Company and Naroto are most popular in sale, manufacturing, service providing. The brand of these companies high demand in India and other countries are one of the leading manufacturer and exporter of twin shaft disperser used for making plastic emulsions. All these are the name of most repudiated company in the leading. Machine

Torque Wrench

Torque Wrench

Torque Wrench

A pneumatic torque wrench is an air driven tool designed to apply a specific, pre-set amount of torque or tension to a fastener, typically a nut and bolt. This precise tensioning is important in many multi-fastener applications where very close tolerances need to be maintained. Unlike other forms of torque wrenches, many pneumatic torque wrenches offer a wide range of torque settings. They are also generally smaller, more powerful, and cheaper to run than electrical or manual versions. Torque Wrench

Sheet Metal

Sheet Metal

Sheet Metal

Sheet Metal is a flat shaped product made from metal that can vary in thickness between 0.015cm and 6.32cm. Very thin pieces would be considered foil/leaf pieces while thicker pieces are called plates. Sheet Metal 

Cutting Tools

Cutting Tools

Cutting Tools

Cutting the goal is high-precision, high efficiency, low cost, green. In recent years, cutting processing technology in high-speed cutting, hard-state cutting, micro-mist lubrication of cutting, dry cutting, composite cutting areas such as the rapid development of these technologies are cutting production equipment to achieve a minimum high efficiency, low-cost processing parts and components industry the core of the way, so far, the biggest machining technology development marked by high-speed machining (HighSpeedCutting, HSC) development. Cutting Tools

Automotive Tools

Automotive Tools

Automotive Tools

Professional mechanics and home mechanics are continually in need of a good place to get automotive tools and equipment. Eris automotive has been selling automotive tools on the Internet at below retail prices for seven years. We know our business and can help all types of mechanics find the right tool for all types of automotive jobs. Automotive Tools 

Angle Grinder

Angle Grinder

Angle Grinder

Another feather in the cap for Bosch is their Bosch angle grinder. They were making splendid career with their grinders and the invention of angle grinders made them even more successful. They got patents and awards for their dust collecting attachments. They made started with their lightest and most comfortable large angle grinder weighing less than 12 pounds and sized 7 to 9 inch only. This is 20% lesser in weight than its competitors..Their design in vibration control of main and side handles reduces the vibration of about 50% than other manufacturers through which they captured markets. Soft grip handles and rotating main were their added advantage. Hence, when people use them the whole day, they feel less fatigue which makes it customer’s top priority. Angle Grinde

Electric Grinder

Electric Grinder

Electric Grinder

Although most of the meat grinders found in the old households are the manually operated ones, it will be still be alright to have electrical ones. We all know that manual meat grinders can work fine with small amount of meat; an electrical grinder can still be a great help especially when you are preparing for a large feast for your family, relatives, or friends. Electric Grinder Read the rest of this entry »

Drum Sander

Drum Sander

Drum Sander

First, What is a drum sander?
A drum sander is a particularly awesome woodworking machine designed to sand and finish large wood surfaces on a mechanism similar to a thickness planer. Drum sanders are available in a variety of sizes from 10″x20″ to 26″x52 inches. This means that although the sanding belt is only 10 or 26 inches itself, the machine has one open side which allows you to pass your panel through once, flip it, and pass it through a second time. You can beautifully sand or finish an entire piece (up to 52″) in just two passes. Within the drum sander the sandpaper moves on a continuous loop (like a planer) through a sanding drum. The abrasive sleeve is cylindrical and turns with motorized power on a cylindrical slotted drum. Drum sanders have a height adjustment to allow for around four inches, give or take, of thickness to be passed through. Operators adjust the machine’s feed rollers, and height to accommodate their materials, then simply pass the wood through. The looped abrasive sleeve sands or finishes the material as it gently moves or pushes it out the other side. Most drum sanders offer pretty simple sand paper changes and deliver great results with much less bulk and much less price than a wide-belt sander. Drum Sander Read the rest of this entry »

EDM MACHINE

Get High Precision, 3D Spatial Measurements with Laser Tracking Services

GKS laser tracking service performs 3D measurements with a high degree of precision and speed. Our ability to capture and interpret 3D shapes with respect to any chosen coordinate system, makes this exciting technology one you should consider. Laser tracker rentals also available!

Benefits of Laser Tracker Services:

• Accurate- laser tracking has an accuracy of 17 microns over a distance of 20’
• Extremely portable- laser tracking gives the ability to measure and inspect objects on-site, in-process or where it’s most efficient and cost-effective for you
• Laser tracking uses an ultra-precise laser beam to measure objects (0-72 meter range)
• Can be used in most any environment
• Due to the tracker's spherical measuring volume, dimensional information is able to be evaluated from almost any perspective
• High-Precision- the coordination of both vertical and horizontal encoders allows for angles for very accurate measuring capabilities using the laser tracker
• Set milling machines and align machine tools with accuracy
• Check parts on machine beds

Laser Tracker Project: Steam Turbine Laser Alignment

Cheaper, Faster, More Efficient Process

The assurance of knowing you are working on your laser tracking project with GKS Global Services is backed by Guaranteed Results! We are confident that you will be satisfied with our work-- start your laser tracking services project. We also provide laser tracker rentals

What is 3D Laser Scanning?

3D Laser Scanning -- Hard Work That Looks Like “Magic”

First of all, let’s be clear that 3D laser scanning is not magical. True, the technologies that make it possible are very advanced and quite amazing. But behind the mirrors—found in the laser probe (without any smoke)—there is a lot of know-how and experience that makes the laser scanning experience seem so easy to GKS customers.

What is 3D Laser Scanning?
3D Laser Scanning is a non-contact, non-destructive technology that digitally captures the shape of physical objects using a line of laser light. 3D laser scanners create “point clouds” of data from the surface of an object. In other words, 3D laser scanning is a way to capture a physical object’s exact size and shape into the computer world as a digital 3-dimensional representation.

3D laser scanners measure fine details and capture free-form shapes to quickly generate highly accurate point clouds. 3D laser scanning is ideally suited to the measurement and inspection of contoured surfaces and complex geometries which require massive amounts of data for their accurate description and where doing this is impractical with the use of traditional measurement methods or a touch probe.

The Process:

Data Acquisition via Laser Scanning
An object that is to be laser scanned is placed on the bed of the digitizer. Specialized software drives the laser probe above the surface of the object. The laser probe projects a line of laser light onto the surface while 2 sensor cameras continuously record the changing distance and shape of the laser line in three dimensions (XYZ) as it sweeps along the object.

Resulting Data 
The shape of the object appears as millions of points called a “point cloud” on the computer monitor as the laser moves around capturing the entire surface shape of the object. The process is very fast, gathering up to 750,000 points per second and very precise (to ±.0005").

Modeling Choice Depends on Application
After the huge point cloud data files are created, they are registered and merged into one three-dimensional representation of the object and post-processed with various software packages suitable for a specific application.

Point Cloud Data for Inspection
If the data is to be used for inspection, the scanned object can be compared to the designer’s CAD nominal data. The result of this comparison process is delivered in the form of a “color map deviation report,” in PDF format, which pictorially describes the differences between the scan data and the CAD data.

CAD Model for Reverse Engineering
Laser scanning is the fastest, most accurate, and automated way to acquire 3D digital data for reverse engineering. Again, using specialized software, the point cloud data is used to create a 3D CAD model of the part’s geometry. The CAD model enables the precise reproduction of the scanned object, or the object can be modified in the CAD model to correct imperfections. GKS can provide a surface model or the more complex solid model, whichever results are needed for the application.

CAD DRAWING

t Last

Yesterday. I came out of Tesco. There was a young
woman. With her husband. And four kids. Three girls and
a son.

She was carrying her son in her arms. How old was he?
One year? I had to say it. I couldn't help it. "At
last", I said to the woman.

"It's a boy", the woman said. "Yes", I said, "I can see
that. First you had three girls and now you have a son.
At last."

That was a day earlier. I was riding in the bus. We
passed the workshop of the bus. The bus went to the
workshop. And there it took diesel.

I stepped out of the bus. I had a look at how things
were going. The bus took 130 liters of diesel. I came
back in the bus.

The driver asked me how much petrol went into the bus.
I told him. "130 liter. But it's not enough to fill the
tank of my car."

The driver was laughing. But then. He was still in a
good mood. Because earlier I had said "Malaysia". As he
asked me where I'm from. That was fun.

Get Rid Of Old Dimensioning Once And For All

This is the first article in a series of four articles.
F-R-E-E. Written by Jos van Doorn. To get the other
articles. Send a blank e-mail to:
mailto:dim@aweber.com

I guess you already know about drawing dimensions.
There are a lot of dimensions you can draw in AutoCAD.
But new features have been added.

Today I'm going to talk about the arc length feature.
You can measure the length of an arc. Using a
dimension.

Suppose we have an arc in a drawing. And we want to
measure the length of the arc. We want to add the
length to the drawing.

This is how we do it. We click on Dimension in the menu
bar and on Arc Length in the pull down menu. This
prompt is displayed:

Select arc or polyline arc segment:

We select the arc that we have got. After the selection
of the arc this prompt is displayed:

Specify arc length dimension, or [Mtext/Texct/Angle/
Partial/Leader]:

Between the square brackets are the options that we've
got. I'm not going into the options. I just want to
pick a point for the arc length dimension.

As I move the cursor. You can see that the length is
already displayed. There is number. And there is also a
symbol. The arc length symbol.

I must tell something more. I must tell about the
number and I must tell about the arc symbol. We can
change it if we want.

Open the Dimension Style Manager. We can create out own
dimension style or we can modify the existing dimension
style.

Let's modify the existing dimension style. We click on
the Modify button. The Modify Dimension Style dialog
box is displayed.

The dialog box has got seven tabs. We click on the
Arrows and Symbols tab. Now we can set how the arc
length symbol is displayed.

In the dialog box is the Arc length symbol area. In the
area there are three options. The following three
options:

- Preceding dimension text
- Above dimension text
- None

You can have the arc length symbol placed before the
length of the arc. Or preceding the length of the arc.
Or you can have it above the length of the arc.

You can also select that no arc length symbol is
displayed.

The number gives the length of the arc. We can do
something with the number of decimals in the length.
Click on the Primary Units tab.

You'll find the Linear dimensions area. Behind
Precision you can set what precision is to be used. No
decimal places or a number of places.

The units of the length. That depends on what units
have been selected for the drawing. You could change it
over the Units command.

This is what I wanted to say about the arc length
feature of the dimensions command. Next I would like to
talk about jogged dimensions.

About the author:

Jos van Doorn. Has written many AutoCAD articles. Find
them here:

http://autocad-articles.blogspot.com/

Bio:

Jos van Doorn. AutoCAD specialist and AutoLISP
programmer. Also writer AutoCAD books and AutoCAD
articles. Find them here:

http://autocad-articles.blogspot.com/

Keywords:

AutoCAD, CAD, drafting, technical drawing

Summary:

About the dim command that can be found in AutoCAD.
Learn about the new features.

WEDNESDAY, NOVEMBER 15, 2006

"Are you local?"

I hate this question. "Where are you from?" "Dari
mana?" I hear that question all the time. Why do they
want to know?

Does it make a difference where I'm from? Suppose I'm
from Russia. Am I now a different person than if I'm
from England?

Anyway. Now I found what I can say if they ask me where
I'm from. I say:" Malaysia". And if they don't believe
me, I say: "Saya Bumi."

I was in this building. There was a map of an area
around the building. With a lot of houses. A man
stepped to me.

The man was a salesman. He worked for the developer. He
asked me: "Are you local?" And then I knew. I must have
told him. "Saya Bumi."

New Way of Creating AutoCAD Drawings

You can sue this way. If you're creating 2D drawings
and 3D drawings. If you follow this way, you're saving
a lot of time.

The new way of creating CAD drawings is all about
creating a 3D drawing first and then using that drawing
to create your 2D drawing.

In this course is explained how it is done. More. There
is even explained how you can add dimensions to your 2D
drawing.

Let's make a good start. We start with creating a 3D
drawing. It's going to be a simple drawing. But that
doesn't matter.

We open AutoCAD. We start with a new drawing. We draw a
rectangle. The size of the rectangle is 200 by 100. And
we draw a circle.

The comes is drawn in the left side of the rectangle.
The diameter of the circle is 100. It fits nicely in
the rectangle.

This is the base of the 3D drawing. Let's extrude the
rectangle and the circle. We give them a height of 50.
And a taper angel of zero.

We now have two 3D objects. Let's make one 3D object.
We use the UNION command. You know that command. You
know what to do.

To see the 3D model clearly we go to a 3D view of the
drawing. Next we save the drawing. Give it the name 3D
drawing.

This is the first articles in a series of five
articles. To get the other articles send a blank e-mail
to:

mailto:newway@aweber.com

About the author:

Jos van Doorn. AutoCAD specialist and AutoLISP
programmer. Also write AutoCAD articles and AutoCAD
courses. Find everything here:

http://autocad-articles.blogspot.com/

THURSDAY, NOVEMBER 02, 2006

Enter your email address below to subscribe to AutoCAD Articles blog!





powered by Bloglet

Blog Directory

SUNDAY, OCTOBER 29, 2006

Jos van Doorn 

FRIDAY, OCTOBER 27, 2006

1,000,000 US dollar

I won 1,000,000 US dollar. Not once. No. I won thatmoney three times now. I also won 3,000,000 euro. In total.

I received an e-mail. They told me. There is a lottery.And they simply pick an e-mail address. The e-mailaddress wins the price.

It is all very save, The money is in a bank account.And I will get the money. All I need to do is open abank account.

Opening a bank account. That is easy. You must giveyour name, your address, and your date of birth. Andyou must put 2,000 pound in the account.

This is going to be good. Now I'm talking with thebank. About a loan. The banks gives me a loan of 200pound for one week.

Because after one week the money is in my account. AndI can pay back the bank. We're still negotiating. Butthis is going to be good.

Drafting Tools - Snap and Grid

We've got snap and grid in AutoCAD. Let's talk about snap and grid. Let's see how we can use it and why we would use it.

Snap restricts the cursor movements to specified intervals. That is handy. Lines will have a specific length.

Still. If you're using object snaps than you can pick a point that is not on an interval that has been specified. We'll talk about object snap later.

With grid switched on dots are displayed in the screen. The dots help to visualize distances. Often the grid interval is the same as the snap interval.

That is important. You can have grid dots displayed in the screen. Now you want to print your drawing. The dots are not printed.

OK. We know what snap and grid are. But we want to know more. We want to know how we can set the intervals and how we can switch it on and off.

Let's start with setting the intervals. There are two ways for doing that. Whatever way you choose. You do it over the Drafting Settings dialog box.

Click on Tools in the menu bar. A pull down menu shows up. In the pull down menu click on Drafting Settings. The Drafting Settings dialog box is displayed.

There are four tabs in the Drafting Settings dialog box. The Snap and Grid tab is in front. That's exactly what we want.

In the dialog box we see two check boxes and we see four areas. The checkboxes can be used for switching on or off snap and grid.

Let's have a look at the Snap area and the Grid area. First the Snap area. In that area you can enter values for the spacing.

You can enter a value for the X spacing and you can enter a value for the Y pacing. The spacing set the interval I was talking about.

There is more you can do in that area. You can enter an angle, an X base, and a Y base. The angle gives the angle of the snap intervals.

Most of the time you do not change the angle. You leave the angle at zero. But the X base and the Y base. What's that?

The X base and the Y base gives the starting point of the snap. As before. Do not change it. Leave it as it is. At zero.

You now know how you can do the settings for the snap. You do it in the Snap area of the Drafting Settings dialog box.

But we can also do something with the settings of the grid. That is done in the Grid area of the dialog box. This time we can do less.

We can only change the X spacing and the Y spacing. We cannot change the angle or the X base and Y base of the grid.

This is what is done most of the time. Most of the time the spacing for the grid is the same as the spacing for the snap.

That is what is happening. The grid follows the snap settings for angle and the X base and Y base. So there is no need to change those settings.

This is what we now saw. You can do the settings of the snap and the grid in the Drafting Settings dialog box. And you can switch them on and off.

Before I continue. I must tell you about the third area in the Drafting Settings dialog box. It is the Snap style and type area.

For the snap type we can set Grid snap and we can set PolarSnap. If we go for a Grid snap type then e can select a rectangular snap or an isometric snap.

If you're creating isometric drawings, then you want to go for an isometric snap. The snap will have the isometric angles.

I'm not going to talk about PolarSnap now. I will do that later. I will do that as we're talking about Polar Tracking. In the next article.

But there is another way. Look at your screen. Do you see the status bar? In the status bar there are two buttons.

In the status bar there is the Snap button and there is the Grid button. You can click on the buttons. To have snap and grid switched on and off.

Something else you can do with the buttons. You can right click them. If you do a short cut menu is displayed.

If you right click the Snap button then you'll find the following options in the shortcut menu:

-PolartSnap On
-Grid Snap On
-Off
-Settings

If you right click on the Grid button then you'll find the following options in the shortcut menu:

-On
-Off
-Settings

You can imagine where the on and off options stand for. Those options can be sued to switch snap and grid on or off.

But we already saw. There is a quicker way. We can also click on the Snap and Grid buttons in the status bar. In fact. There is another quick way.

You can press the F7 function key to switch grid on or off. And you can press the F9 function key to switch snap on or off.

Oh. In the shortcut menu under the Snap button you also see the PolarSnap On option. As I said before. We'll talk about it alter.

But there is the Settings option in the shortcut menus under the Snap button and the Grid button. Click on that option.

If you do the Drafting Settings dialog box is opened. We already have seen what can be done in the Drafting Settings dialog box.

But this is what we now know. Using the shortcut menu under the Snap and Grid button. That is a quicker way to open the Drafting Settings dialog box.

This is it for today. Now you know everything that you need to know about snap and grid. Tomorrow we're going to talk about polar tracking.

See you tomorrow.

This is the first article in a series of five articles. F-R-E-E. Written by Jos van Doorn. To get the other articles. Send a blank e-mail to:
mailto:draftingtools@aweber.com

FRIDAY, OCTOBER 13, 2006

By Accident

This is Malaysia. No kissing. In public. But that canhappen. Kissing in public. By accident. No body canaccuse you. You cannot be arrested.

That is what happened to me. I was sitting in the bus.With my wife. She was sitting next to me. At my rightside.

She had her haed turned to me. She was looking at me.Handsome. macho, sexy, you know the treat. I turned myhead and looked back at my wife.

And then it happened. The bus made a sharp turn to theright. I could keep on up right. But my wife. It was asif she was pushed to the left.

Our lips met. We kissed. In public. By accident. And Igot away with it.

THURSDAY, OCTOBER 12, 2006

Who Else Wants To Know About The Line Command

Starting the LINE command

There are three ways for starting the LINE command. Youcan type LINE at the command prompt, you can click onthe LINE button, or you type L. Typing LINE at the command prompt. That is a long wayof starting the LINE command. To be quicker you betterclick on the LINE button or type L.

You can find the LINE button on the Draw 2D toolbar. Ifthe Draw 2D toolbar is in a vertical position, thenyou'll find it in the top of the toolbar.

That depends. On whether you prefer using the keyboard.But typing L and pressing the ENTER key or the rightmouse button. That's very fast.

So we have started the LINE command. Prompts show up.These are the prompts that show up.

1. Start of line:
2. Angle/Length/:
3. Angle/Length/Follow/Undo/
4. Angle/Length/Follow/Close/Undo/:

The first prompt is displayed as the LINE command isstarted. You can now pick a point in the drawing area.A line will be drawn from that point.

After picking a point the second prompt is displayed.There are three options in the prompt. These are thethree options:

- Angle
- Length
- End point

In the second articles from this series we will talkabout the angle option and the length option. Now weconcentrate on the end point option.

That option is the default option. To use that option.Again we pick a point in the drawing area. And a lineis drawn to that point.

The third prompt is displayed. In this prompt we findtwo more option. Follow and Undo. But again there isthe default end point option.

We pick a point again. We now have picked three pointsin the drawing area. Two lines have been drawn. And thefourth prompt is displayed.

The fourth prompt is the same as the third prompt.Except. We now also have the Close option. Still we canpick a point.

Suppose we pick a point. We can do that. Because theend point option is the default option. A line is drawnto that point.

A new prompt is displayed. That prompt is the same asthe fourth prompt. The fourth prompt is displayed allthe time when we continue.

That's what we saw in the fourth prompt. We saw theClose option. That option has been added to the prompt.Now let's see how that works.

We want to invoke the Close option. We enter C at thecommand prompt. Just C. Because that is the capital inthe word Close.

After entering C at the command prompt and pre3ssingthe right mouse button or the Enter key. A line isdrawn. To the point where we started.

The figure we were drawing is now closed. And the LINEcommand is terminated. We're no l9onger in the LINEcommand.

If we want to draw more lines, then we must start theLINE command again. Easy. Just press the right mousebutton or press the ENTER key.

There is something else I must ell you. I must talkabout the rubber band. All the time there is a rubberband coming from the last point picked.

The rubber band goes to the cursor. You can move thecursor. And the rubber band moves with the cursor. Therubber band shows what line is to be drawn.

This is the first article in this series. We were nowtalking about starting the LINE command and about theprompts of the LINE command.

We also learned about the Close option of the LINEcommand. I assume you now know how the LINE commandworks. How to use it. For starters.

Get the series. In the next article we're going to talkabout all the options of the LINE command. The obviousoptions.

Before I finish this article, I want to give you anexercise. Just to make sure you understand what hasbeen explained.

Start the LINE command and draw four lines. The linesform a rectangle. Use the Close option to get a properrectangle.