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Browsing articles in "Techniques"

Manufacturing Marketplaces: Love ‘Em or Hate ‘Em? [CNCCookbook 2017 Survey]

Feb 28, 2017   //   by Bob Warfield   //   Blog, Business, Manufacturing, Techniques  //  No Comments

Author: Frank Kovalchek, powered by Flickr.com. Under the copyright of their owners.
Note:  I am bumping this back to the top of the articles for another week as I’d like to get more participation in the survey (see below).  If you’ve tried one of these services, please tell us about your experiences in the survey.…

When to Use a Spot Drill + 7 Useful Tips and Techniques

Feb 27, 2017   //   by Bob Warfield   //   Beginner, Blog, FeedsSpeeds, Techniques  //  21 Comments
Spot Drill

Machinists are familiar with spot drills–they’re stub length and have little or no flutes.  These little drills are designed to be extremely rigid so that they can precisely spot a hole for a twist drill.  Maximum meat in the shank keeps them on target.  The goal is use the spot drill to make a little…

Breaking News: “CNC Chef” Video Series Launched With Cutting Tool Engineering

Feb 20, 2017   //   by Bob Warfield   //   Blog, Cool, FeedsSpeeds, Software, Techniques  //  9 Comments
CNC Chef

I am excited to announce that I’ll be doing a new monthly video series with Cutting Tool Engineering called the “CNC Chef” (a playful reference to the CNCCookbook).  In our first video, I cover the subject of Tool Rubbing.  It comes as a surprise to some that if you try to slow down a cut…

14 Tips For Parts That Are Too Big For Your CNC Machine

Feb 13, 2017   //   by Bob Warfield   //   Beginner, Blog, CNC Router, Techniques  //  3 Comments
cnc router aluminum cutting

It’s not always practical to have a machine that’s big enough to easily handle the job at hand.  But, with some clever fixturing and the right techniques, it is often possible to machine much larger parts than what your machine seems capable of handling.   Here’s how:
The Basic Idea, When Machining Parts Too Big For…

New: Machine Learning for Cutting Tools and Feeds and Speeds

Feb 7, 2017   //   by Bob Warfield   //   Blog, Cool, FeedsSpeeds, NewFeatures, Software, Techniques  //  2 Comments
Machine Learning Robots

These days, it seems like Machine Learning is being talked about everywhere.  Self-driving cars, machines beating humans at every game, Google search results change based on machine learning–artificial intelligence has become much more common that it was in the past.
There’s a reason for that: Machine Learning allows software to learn new tricks without requiring…

How to Create a CAM Package Short List + More CAM Survey Info

Feb 1, 2017   //   by Bob Warfield   //   Blog, GCode, Products, Techniques  //  No Comments
cam package visibility

Fellow CNC’ers, there’s still more information to be gleaned from our CNCCookbook 2016 CAM Package Survey, it just takes a while to crunch all the numbers with so many folks having responded.
So far, we’ve covered:

Market Share
Customer Satisfaction Awards

This week I want to delve a little bit into the murky process that…

Feedrates for Entering Cuts and Other New G-Wizard Features

Jan 31, 2017   //   by Bob Warfield   //   Beginner, Blog, FeedsSpeeds, NewFeatures, Products, Software, Techniques  //  1 Comment
feeds and speeds for plunging

I just uploaded G-Wizard Calculator version 3.72 and it includes some very cool new capabilities.
Let’s start with something that every CNC’er deals with on virtually every new feature while using their CAM System:
What Feedrate Should I Use to Enter a Cut Using a Helix, Ramp, or Plunge?
Yup, CNC’ers deal with this quite…

Scary Vacuum Fixture Mishap and Some Possible Cures

Jan 17, 2017   //   by Bob Warfield   //   Blog, Cool, FeedsSpeeds, Products, Software, Techniques  //  13 Comments
vacuum fixture cnc crash

I jumped about two feet when this plate broke loose from the vacuum fixture while the pocket floor was being machined:

He had actually dialed things back quite a bit to try to keep it happy, and I would have thought the majority of the worst cutting forces were done, but the part still broke…

Learn How to Tolerance Circular Runout in GD&T

Jan 17, 2017   //   by Bob Warfield   //   Beginner, Blog, Manufacturing, Techniques  //  No Comments
circular runout gd&T

I just uploaded another installment to our Free GD&T Tutorial, and this article explains the Circular Runout symbol.

Circular Runout tolerance on a drawing…
Circular Runout is a fairly common GD&T symbol.
Geometric Dimensioning and Tolerances is a methodical and scientific way to specify tolerances on your drawings.  It tells in a concise symbolic way…

Which CNC Skills Give You An Advantage Over Others?

Jan 9, 2017   //   by Bob Warfield   //   Blog, Business, Manufacturing, Techniques  //  2 Comments
cnc skills

Did you ever hit a tough problem in the shop, one where nobody seemed to know what to do, and all of a sudden someone came forward and saved the day?
Those kind of incidents are what elevate some players over others in the workplace.  Nothing like saving the bacon because you have some scarce…

5 Awesome Ways to Use a GCode Editor Simulator With CAM

Jan 7, 2017   //   by Bob Warfield   //   Beginner, Blog, GCode, Software, Techniques  //  1 Comment
how many cnc'ers know gcode?

I get asked this question a lot:
Why would I need a GCode Editor Simulator when I’ve got CAM and it has a Simulator too?
For many CNC’ers, they think CAM means they’ll never need or want to deal with g-code. So why would they ever consider having a G-Code Editor / Simulator like our…

The Ultimate Feeds and Speeds Cheat Sheets (and More)

Jan 4, 2017   //   by Bob Warfield   //   Beginner, Blog, FeedsSpeeds, Products, Software, Techniques  //  1 Comment
feeds and speeds cheat sheet

Do you use cheat sheets?
You know, those little pieces of paper or charts where you cram in a quick summary of everything you need to know to solve some type of problem quickly.  Man, I got through college on my cheat sheets!
Now hang on, before you start thinking I was actually cheating, our…

How Good Machinists Hold Tight Tolerances on Worn Out Old Machines

Dec 29, 2016   //   by Bob Warfield   //   Blog, Manufacturing, Techniques  //  1 Comment
old worn out cnc machine tolerances

Even an old worn out machine can hold decent tolerances for the right machinist.  Well, maybe not this old and worn out!
One of the great things about my job is I’m in contact with a lot of machinists from all walks–high-end aerospace, mom and pop job shops, prototype and model shops, hobbyists and so…

What Every CNC’er Needs to Fix CAM Glitches Quickly and Easily

Dec 20, 2016   //   by Bob Warfield   //   Blog, GCode, Software, Techniques  //  1 Comment
cam glitch

I was recently reading a post on one of the boards and came across a fellow who was having a problem with Fusion 360:

Control view on the left, CAM on the right: see the problem?
The controller view of the toolpath is on the left and the CAM view is on the right.  Do…

Learn How to Tolerance Total Runout in GD&T

Dec 12, 2016   //   by Bob Warfield   //   Beginner, Blog, Manufacturing, Techniques  //  No Comments
total runout symbol callout GD&T

I just uploaded another installment to our Free GD&T Tutorial, and this article explains the Total Runout symbol.

Total Runout tolerance on a drawing…
Because Total Runout is such a tight control over every point on the surface, it is less commonly used than Circular Runout. Even so, it is still a fairly common GD&T…

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