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Browsing articles in "Beginner"

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…

How Can I Figure Out What Tool to Use on My CNC Mill Or Router? (Part 3: Pocketing)

May 10, 2016   //   by Bob Warfield   //   Beginner, Blog, FeedsSpeeds, Products, Software, Techniques  //  No Comments

In Part 3 of our series on how to select the right CNC Cutter we’ll be talking about pocketing.
What are Pockets?
Pockets are cavities in the top of the part.  Or, at least the face that’s on top during the milling process.  They can have a floor, or they can be open by piercing…

7 Great Books For Your CNC Library

Apr 28, 2016   //   by Bob Warfield   //   Beginner, Blog, Products, Techniques  //  9 Comments

I must admit: as much as I value the Internet and online resources, I still like books for a lot of things too.  Accordingly, I have a large library on CNC and Machining topics that I use to help me research a lot of what I write for CNCCookbook.  I thought you might like to…

How Can I Figure Out What Tool to Use On My CNC Mill Or Router? (Part 2: 2D Profiling)

Apr 26, 2016   //   by Bob Warfield   //   Beginner, Blog, Techniques  //  1 Comment

Profiling the outside of these parts…
This is Part 2 of our series on how to select the right CNC cutter for whatever job you’re doing.  We talked about choosing cutters for holes in the first installment.  In this article, I’m going to talk about selecting cutters for 2D Profiling.
What is 2D Profiling?
Think…

8 Ways to Locate Part Zero on Your CNC Machine

Apr 25, 2016   //   by Bob Warfield   //   Beginner, Blog, Techniques  //  17 Comments

One of the first things you have to do before you can begin machining a part is to tell the machine where part zero is.  Part Zero is the datum corresponding to the 0, 0 coordinate on the CAD drawing that you used for all your CAM work or to generate the g-code for your…

How Can I Figure Out What Tool to Use On My CNC Mill Or Router? (Part 1 – Holes)

Apr 19, 2016   //   by Bob Warfield   //   Beginner, Blog, Products, Techniques  //  5 Comments

I get this question from time to time, and all beginners are going to have it when they first start out:

How can I figure out which tool to use?

For this article, let’s stick to CNC Mills and Routers, and be aware that a Router is really just another name for a particular type…

Here’s The Scoop on Which Machines Hobby CNC’ers Have And What They’re Making

Apr 7, 2016   //   by Bob Warfield   //   3D Printing, Beginner, Blog, CNC Router, Cool, DIY CNC, Products  //  3 Comments

I launched a survey a few days ago and we’ve already had over 300 responses as I write this–clearly there’s a lot of passion amongst the Hobby CNC crowd.  I can’t blame them–I love CNC and every aspect of it.
Here’s what we found out:
What kinds of CNC machines do you own?

CNC Mills…

What Machines Do CNC Hobbyists Own And What Do They Build With Them?

Apr 3, 2016   //   by Bob Warfield   //   Beginner, Blog, CNC Projects  //  No Comments

If you’re a CNC Hobbyist who owns their own CNC Machine, please take a few moments to answer our quick survey.  We want to find out and share with our readers what kinds of CNC Machines hobbyists own and what they’re doing with them.
>> Click to Take the CNC Hobby Machine Survey <<…

Great Video on Varying Spindle Speed to Control Chatter

Feb 29, 2016   //   by Bob Warfield   //   Beginner, Blog, FeedsSpeeds, Techniques  //  No Comments

SSV can really help control chatter when turning…
Hat tip to Tom for bringing this video to my attention.  In it, Haas describes their “SSV” (Spindle Speed Variation) feature to control chatter.  They also give the best discussion I’ve seen of how diameter affects surface speed when turning (smaller diameters have to run faster just…

G75 and Peck Parting Off For Lathes

Feb 17, 2016   //   by Bob Warfield   //   Beginner, Blog, GCode, Techniques  //  7 Comments

For whatever reason, parting off seems to be the operation on lathes that causes the most people trouble.  Perhaps deep boring operations where the bar is really hung out there is a close second.
Parting off is definitely a challenging operation when you look at it mechanically.  You’re going to take a fairly tiny cutter…

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