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Browsing articles in "FeedsSpeeds"

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…

Better Feeds and Speeds for Shopbot CNC Routers

Feb 8, 2017   //   by Bob Warfield   //   Blog, CNC Router, FeedsSpeeds, Software  //  No Comments
Shopbot CNC Router Feeds and Speeds Specs Machine Profiles

I wanted to let the Shopbot community know we’ve added some features to our G-Wizard Feeds and Speeds Calculator just for you.  I have steadily heard two requests from the Shopbot users we already have:
#1:  Give us pre-defined Shopbot Machine Profiles
#2:  Give us the feedrates in inches (or mm) per second because that’s…

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…

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…

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…

CNCCookbook 2016 End Mill Survey Winners (Drumroll, Please!)

Nov 29, 2016   //   by Bob Warfield   //   Blog, FeedsSpeeds, Manufacturing, Products  //  11 Comments
End Mill Market Share

Nearly 1300 votes were cast for various endmill brands in our recent survey, and there were some 93 different end mill brands represented–WOW!
The response to the survey has been amazing, and now it’s time to present the results.  I have divided those results into 3 tiers since there are so many brands to consider.…

CNCCookbook 2016 End Mills: Who Makes the Best End Mills?

Nov 23, 2016   //   by Bob Warfield   //   Blog, FeedsSpeeds, Products, Techniques  //  No Comments

What are the most popular end mill brands?  Let’s find out by surveying our readers (click the link):
Take the CNCCookbook 2016 End Mill Survey
We’ll put up the results as soon as we get a decent number of responses.  Be sure  you’re signed up for our email newsletter so you don’t miss hearing the…

2 Tools for Optimizing CNC Milling Cut Depth and Cut Width/Stepover

Nov 8, 2016   //   by Bob Warfield   //   Beginner, Blog, Cool, FeedsSpeeds, Manufacturing, Products, Software, Techniques  //  3 Comments

The depth of cut and width of cut (also called stepover) are crucial variables when milling pockets, profiling, facing, and any other machining operation where you’ll be cutting with the flutes on the side of an endmill.  Aside from the machine’s capabilities, the material, and a description of the tool to be used, they’re the…

G-Wizard Calculator v3.65 Adds Cool Goodies for GD&T and Machine Profiles

Oct 27, 2016   //   by Bob Warfield   //   Blog, FeedsSpeeds, NewFeatures, Products, Software  //  No Comments

I just uploaded G-Wizard Calculator version 3.65 (click the link to download it manually).
New G-Wizard Release Basics
Before I get into what’s new in this release, I want to revisit some new release basics to try to help everyone with some common questions.
How do I get new releases?
Normally, G-Wizard will download new…

Get Goldilocks Feeds and Speeds for Best Speed and Longest Tool Life

Oct 18, 2016   //   by Bob Warfield   //   Blog, FeedsSpeeds, Software, Techniques  //  No Comments
Feeds Speeds Porridge

Many machinists, especially brand new and hobby machinists, probably think performance and tool life don’t go hand in hand.  You choose one or the other and let the chips fall where they may (sorry!).  But it turns out that there is actually a middle ground that’s good for both performance and tool life, and it’s…

Toolpath Secret Weapon: Complete Guide to Plunge Roughing / Milling

Oct 5, 2016   //   by Bob Warfield   //   Blog, FeedsSpeeds, Software, Techniques  //  5 Comments
Plunge Roughing Milling a Pocket

Have you got a tough job ahead, either because your machine is too lightweight or because of challenging geometry on the part (deep pockets, for example)?
If so, maybe Plunge Roughing (also called Plunge Milling ) is the answer.
What is Plunge Roughing?
Let’s start by taking a look at what Plunge Roughing is.  The…

39 Feeds and Speeds Hacks, Tips, and Techniques

Sep 26, 2016   //   by Bob Warfield   //   Beginner, Blog, CNC Router, FeedsSpeeds, Products, Software, Techniques  //  2 Comments

Breaking Through Roadblocks

Sometimes you just get stuck…
Sometimes you just get stuck.  You need to do something and it doesn’t look like it’s possible.  We’ll start with a series of hacks for those situations.
#1-#3 My Spindle Won’t Run Slowly Enough for the Material and Tooling I Need
This problem happens particularly often if…

Making It Absurdly Easy to Get Started With G-Wizard Calculator

Sep 24, 2016   //   by Bob Warfield   //   Beginner, Blog, FeedsSpeeds, Products, Software  //  1 Comment
g-wizard social login

OK, granted, “Absurdly Easy” might be exaggerating things a bit, but I try to constantly make G-Wizard easier for everyone.  Lately, I’ve been working diligently on the very beginning of the process.  Many will have noticed the recent appearance of a brand login popup and with the latest release I uploaded there is now a…

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