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Browsing articles in "Techniques"

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…

Want to Get More Done? Try the Pomodoro Technique

May 10, 2016   //   by Bob Warfield   //   Blog, Business, Software, Techniques  //  4 Comments
Get more done with ToDo Wizard

Photo courtesy of Entrepreneurship Life…
How I Get More Done
I have a confession to make: I’m obsessed with productivity.  Like many of you, I always have more projects on my plate than I can possibly get done, but that doesn’t stop me from constantly biting off more than I can chew.  I equate success…

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…

CNC Project: Mini Pool Table

Apr 19, 2016   //   by Bob Warfield   //   Blog, CNC Projects, Techniques  //  6 Comments

CNC yourself a mini pool table and shoot ball bearing pool balls with your pencil…
I promised to pass this project along in my recent article about Northwest Iowa Community College and their CNC program.
They came up with the mini pool tables as part of what they call a “Face to Face” program.  With…

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…

Learn How to Estimate Turning Jobs With G-Wizard Estimator

Apr 12, 2016   //   by Bob Warfield   //   Blog, Business, Manufacturing, Products, Software, Techniques  //  No Comments

G-Wizard Estimator is CNCCookbook’s estimating software for machine shops.  At the moment, it’s in Beta Test, so it’s free for anyone who can use G-Wizard Calculator.
I recently got a call from a customer who wanted to see a demo of how to estimate lathe parts.  I suggested he send me a print for one…

15 Most Useful Features in G-Wizard for Higher Material Removal Rates

Mar 30, 2016   //   by Bob Warfield   //   Blog, FeedsSpeeds, Manufacturing, Products, Software, Techniques  //  No Comments

Sometimes we just need the job to go faster.  When that’s the case, look into increasing your Material Removal Rates–MRR is your primary metric for reducing cycle time.  I get calls all the time from shops that want me to help them reduce their cycle times, and these are the most useful features in G-Wizard…

What Every CNC’er Ought to Know About Tool Deflection

Mar 21, 2016   //   by Bob Warfield   //   Blog, FeedsSpeeds, Software, Techniques  //  7 Comments

What are the limits of Tool Deflection?  Why?  And is G-Wizard Calculator optimistic or conservative about those limits?
I recently finished several fairly in-depth discussions with folks running expensive production machining jobs about the limits of Tool Deflection and how to think about them.  First, Tool Deflection is extremely important to Tool Life, Chatter, Surface…

Who Else Wants Cheaper CMM?

Mar 17, 2016   //   by Bob Warfield   //   Blog, Cool, Manufacturing, Products, Techniques  //  10 Comments

I am a total Metrology and Measurement Freak.  I’m from the school the says, “If you can measure it, you can make it to that tolerance.”  I want to know what’s going on in hard numbers.  Consequently, I have collected a fair number of Measuring Tools over the years–probably more than I really need given…

Customer Spotlight: War Machines, LLC

Mar 14, 2016   //   by Bob Warfield   //   Blog, Business, CNC Projects, Cool, Manufacturing, Products, Techniques  //  18 Comments

Our latest Customer Spotlight story is about War Machine LLC.  I am excited to be talking to James Dressman about War Machine and their very special product. War Machine has created the ultimate Gas Block for AR-15’s.  If you’ve ever dreamed of manufacturing firearm parts, War Machine LLC is proof that it can be done…

Milling Composites, Part 2: Tooling, Workholding, and Machine Requirements

Mar 7, 2016   //   by Laura Warfield   //   Blog, FeedsSpeeds, Manufacturing, Techniques  //  3 Comments

This is Part 2 of our Composite Milling series.  In Part 1, we talked about some of the general properties of composites.
Tooling for Composite Machining
Diamond Tooling

PCD tooling is preferred over carbide to resist the abrasion of composite machining.  Image courtesy of Fullerton Tool.
One of the first factors that comes up in…

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…

When is Cutting Aluminum at 1000 SFM Just Like Cutting at 300 SFM?

Feb 19, 2016   //   by Bob Warfield   //   Blog, FeedsSpeeds, GCode, Software, Techniques  //  2 Comments

Strange question, right?  Almost nonsensical.  Surface Speeds are surface speeds, and a difference of 700 SFM has got to result in a difference to the cutter–probably a BIG difference.  Yet, paradoxically, there is reason to believe, backed by science, that 1000 SFM really can be just like 300 SFM in some cases during High Speed…

 

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