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Browsing articles in "Beginner"

GD&T Course: True Position (A Better Way to Tolerance a Position)

Jul 8, 2016   //   by Bob Warfield   //   Beginner, Blog, NewFeatures, Products, Software, Techniques  //  2 Comments
GD&T True Position Symbol

The latest chapter in our Free GD&T Tutorial is now available, and it is all about True Position.  This is the first of a number of chapters that will be focused on the individual symbols used for Geometric Dimensioning and Tolerancing.  The symbol for True Position is this:

The GD&T True Position Symbol…
 
This…

How Big is a 2 X 4? Hint: Lumber Sizes are Deceiving and Here’s Why

Jul 8, 2016   //   by Bob Warfield   //   Beginner, Blog, FeedsSpeeds, NewFeatures, Products, Software, Techniques  //  1 Comment
Lumber Sizes Chart

How big is a 2 x 4?  The actual size of a 2 x 4 is about 1.5 by 3.5 inches.  In fact, it might be up to 2/16″ less than that, depending on a some important factors.
Whoa!  That’s crazy!
Now I’ve got to tell this story, just because I never knew and found…

Calculators and Reference Charts for CNC’ers Right Here!

Jul 8, 2016   //   by Bob Warfield   //   Beginner, Blog, FeedsSpeeds, GCode, Products, Software, Techniques  //  1 Comment

I’ve been getting a fair bit of feedback about reference information lately.  Turns out there is a ton of reference info built into G-Wizard that many people don’t know about, there’s a ton of info people would like to see me add, and there’s also a bunch of info that’s generally useful in tabular form…

GD&T Course: New Chapter on Material Conditions

Jul 5, 2016   //   by Bob Warfield   //   Beginner, Blog, Techniques  //  No Comments
material condition maximum least

Just posted the latest chapter in our Free GD&T Tutorial.  Recall we had just finished up the chapter on Plus/Minus Tolerancing last week.  That’s the approach to tolerancing most are familiar with before they learn GD&T.  This new chapter on Material Conditions talks about some interesting GD&T concepts:

Maximum Material Condition (MMC):  The condition that…

What’s Better Than a Drill Bit Size Chart With Tapping Information?

Jul 1, 2016   //   by Bob Warfield   //   Beginner, Blog, Products, Software, Techniques  //  9 Comments
what's better than a drill chart?

What’s better than a drill bit size chart?
Make no mistake: having a good drill bit size chart (sometimes called a “drill index”) is a very handy thing indeed to have around.  If it has information on which twist drill size to use for tapping, so much the better.
But in this age of computers…

GD&T Course: Plus/Minus Tolerancing

Jun 26, 2016   //   by Bob Warfield   //   Beginner, Blog, Techniques  //  No Comments

Plus/Minus tolerances to locate a hole center…
This week’s GD&T course installment is all about plus/minus tolerancing (also called limit tolerancing).  We get into how it’s done, what it means, and even how to go about choosing what tolerances you should use for parts to achieve their intended purpose and interaction with one another.  Towards…

GD&T Course: Datum Feature Simulators and Datum Selection

Jun 20, 2016   //   by Bob Warfield   //   Beginner, Blog, Techniques  //  1 Comment

A granite surface plate can be a Datum Feature Simulator…
Just uploaded another installment in our free course on the fascinating world of Geometric Dimensioning and Tolerancing (GD&T).  This one deals with:

Datum Feature Simulators:  Hint: a granite surface plate is one and we give explanations and examples of more.
How to go about choosing…

Check Out Our Massive New Guide to Vacuum Tables and Fixtures

Here’s how a typical MDF vacuum table works…
We’ve published a couple of articles on vacuum fixturing in the past and they’ve been among the most popular long term posts we’ve done.  It’s no wonder as vacuum fixturing can be extremely convenient to use.
With that in mind, we went to town researching two giant…

Slitting Saw Feeds and Speeds Plus 20 Slitting Saw Tips

Jun 15, 2016   //   by Bob Warfield   //   Beginner, Blog, FeedsSpeeds, Manual, Products, Techniques  //  2 Comments
slitting saw arbors for ER collet chucks

Arbors for small slitting saws plug directly into ER Collet chucks.  Check our slitting saw page for more information…
I just seriously beefed up our Slitting Saw Feeds and Speeds page with a lot more information.  I added information about Slitting Saw Arbors, more pictures, and a huge number of additional slitting saw tips and…

GD&T Course: Datums

Jun 13, 2016   //   by Bob Warfield   //   Beginner, Blog, Techniques  //  No Comments

Controlling 6 degrees of freedom to position and orient a part…
I just finished posting this week’s new chapter for our free GD&T (Geometric Dimensioning & Tolerancing) course.  This week’s chapter is all about Datums.  In it, we go through:

Basic definition of Datum
How they appear on drawings
Datums vs Datum Features
Datum Reference…

What Do Food Trucks, CNC, and Makers Have in Common? Hint: Ask Anthony Bourdain

Jun 7, 2016   //   by Bob Warfield   //   Beginner, Blog, Business, CNC Projects, Cool, Manufacturing, Techniques  //  2 Comments

Why should we be excited about Makers and Hobby CNC’ers?
I just saw this great quote from Anthony Bourdain on Food Trucks over on Scott Johnson’s blog, and it really hit home for me as a CNC’er and Small Business Entrepreneur:
“Why should you be excited about food trucks? Because they allow creative chefs […]…

A New Cookbook is Born: Check Out Our GD&T Tutorial

Jun 6, 2016   //   by Bob Warfield   //   Beginner, Blog, Techniques  //  1 Comment
GD&T Terminology

Geometric Dimensioning and Tolerancing: GD&T
We’ve just launched our new Geometric Dimensioning and Tolerancing (GD&T) Cookbook.  It’s a free tutorial on GD&T.  We’re just getting started, so there are only two chapters there so far.  But, we’ll add a new one every week and before long we’ll have a very complete GD&T tutorial that’s completely…

Bootstrap Your DIY CNC Mill Conversion With a 3D Printer

May 18, 2016   //   by Bob Warfield   //   3D Printing, Beginner, Blog, CNC Projects, DIY CNC  //  2 Comments
3D Printed DIY CNC Motor Mount

One of the problems with getting started with a CNC Conversion is not having a CNC to help you make the parts.  You can find kits, which are very helpful.  You can try to manually machine the parts, which is entirely doable.  I did some of both for my first CNC project–an RF-45 mill conversion.  …

10 CNC Plasma Cutter Project Ideas

May 15, 2016   //   by Bob Warfield   //   Beginner, Blog, CNC Projects  //  2 Comments
Plasma Cut Fire Pit

So you’re thinking about CNC Plasma Cutters (also called Plasma Tables) and you’re wondering what you might make with one.  Here’s a bunch of ideas to get the juices flowing.
Yard Art

Turn an old saw into artwork…
Signs

Business sign…

House number with brushed and rusted finishes…

A sign for your teenage daughter’s bedroom……

The Ugly Secret About Post Processors Plus 8 Custom Post Processor Ideas

May 14, 2016   //   by Bob Warfield   //   Beginner, Blog, GCode, Manufacturing, Products, Software, Techniques  //  No Comments
What is a Post Processor?

What is a Post Processor?
Post Processors are an essential part of any CAM Software, but they’re one of those things most CNC’ers know just a little about but not a lot.  I’ve just added a new chapter to our Free G-Code Tutorial Course that’s totally focused on Post Processors.
It covers the following:

What…

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