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Ultimate Benchtop CNC Mini Mill Part 5: Acceleration and Cutting Forces

Feb 27, 2014   //   by Bob Warfield   //   Beginner, Blog, CNC Projects, DIY CNC  //  10 Comments
Dragster

This is the fifth installment of our Ultimate Benchtop CNC Mini Mill series.  The series is dedicated to helping DIY CNC’ers work through the design considerations and tradeoffs for their CNC Mill projects.  Here are the installments so far:
Part 1:  Donor Mill
Part 2:  CNC Mechanicals (Ballscrews and Such)
Part 3:  Close Loop vs Open Loops (Servos vs Steppers)
Part 4:  Motion Performance
We’re working towards Motor Sizing, but before we can do that properly, we have one more aspect we need to understand, and that is the role of acceleration and cutting forces on motor torque requirements.
The last thing we want to consider before I wrap up axis motor selection in installment 6 is the role of acceleration and cutting forces.  … Read the rest

Survey on Alternate Input Devices for CADCAM

Feb 24, 2014   //   by Bob Warfield   //   Blog, Products  //  12 Comments
3d-connexion

I’ve had a fair number of people ask about support for devices like the 3DConnexion 3D mouse for G-Wizard Editor.  I don’t use any such devices, but it has made me curious about how many of you are using something more than just a plain old mouse when working in 3D on your CAD and CAM software.
First, I want to talk a little bit about these devices.  The ones I hear most often about are 3D mice from 3DConnexion.  Here are some of the products in their lineup:

A collection of 3D mice from 3DConnexion…
What is a 3D Mouse?… Read the rest

CNC Router Feeds and Speeds from Manufacturer’s Recommendations

Feb 20, 2014   //   by Bob Warfield   //   Beginner, Blog, CNC Router, FeedsSpeeds  //  3 Comments
Compression Spiral

We have quite a large audience of CNC Router users here on CNCCookbook.  Their needs are quite a bit different than the average metalworker’s needs for machining feeds and speeds due to their chosen materials (mostly soft materials like wood, foam board, and plastics) as well as differences in their tooling (special cutters including downcut and compression spirals) and machines (much higher rpm spindles, generally).  In this post, I want to go through some of the special feeds and speeds considerations for CNC Router users.  In particular, I want to show how to use our G-Wizard Feeds and Speeds Calculator together with your cutter manufacturer’s data to get the best results.… Read the rest

A Gearotic Project Video Start to Finish

Feb 17, 2014   //   by Bob Warfield   //   Blog, Cool, Software  //  No Comments

Gearotic is Art Fenerty’s specialized CADCAM program for gear design.  Art is the man who wrote the original versions of Mach3, so he knows a thing or two about CNC.  I have wanted a good video that will both teach you what Gearotic is capable of and also be related to a real project.  Art’s video about designing and building a “Ticker” was a great example, so let me pass it along here:

What you’ll see is Art’s narrative and demonstration of how to use Gearotic to design what he calls “Tickers.”  A Ticker is a sort of kinetic sculpture that uses escapements like you’d find in clocks to create some really interesting motions.… Read the rest

G-Wizard Calculator version 2.28: More Good Stuff

Feb 17, 2014   //   by Bob Warfield   //   Blog, FeedsSpeeds, Software  //  1 Comment
ODTurnMockup

Here at CNCCookbook, we’re always striving to put our More Good Stuff.  It’s what we do, whether the Good Stuff is new machining articles or updates to our software.  Today I uploaded G-Wizard Calculator version 2.28 (click that link to get to the dowload page).  It’s got a number of improvements under the hood:
UI for OD Turning CADCAM Wizard is mocked up along with CADCAM Wizard options for lathes.  
This will be the first of the Turning CADCAM Wizards (well, almost, hole making is the same as for mills) and it looks like this:

Mocked-Up OD Turn CADCAM Wizard UI…
You’ll be able to enter up to 6 diameters to turn and you can specify the corners be radiused, chamfered, or left alone.  … Read the rest

Announcing CNCCookbook’s 2014 President’s Day Sale

Feb 17, 2014   //   by Bob Warfield   //   Blog, Business, FeedsSpeeds, GCode, Software  //  No Comments
PresidentsDay

2014 has gotten itself well underway, so it’s time for our first sale of the year.  We’re offering 15% off featured products using the “GEORGEWASHINGTON” coupon code in the shopping cart.  After all, President’s Day is also George Washington’s birthday, so it only seems fair to honor our country’s first president on President’s Day.  Here are the important details of this special offer:
– Featuring all our top products.
– Sale runs through March 3, 2014–just two weeks to take advantage of these deals.
– To see the discount, click the Buy Now button, go to the shopping cart, and enter your “GEORGEWASHINGTON” coupon code.… Read the rest

G-Wizard Calculator and Editor Webinars Now Available on YouTube

Feb 15, 2014   //   by Bob Warfield   //   Beginner, Blog, FeedsSpeeds, GCode, Software, Techniques  //  2 Comments

You can now view our G-Wizard Calculator and G-Wizard Editor training and demonstration webinars on YouTube.  These webinars are the most up-to-date and in-depth videos we’ve ever done of our products, so they’re chock full of good information on what the products can do and how to use them.  The webinars were extremely well attended and we got lots of great questions from the audience, so we plan to keep doing webinars going forward.  It seems to be a good medium in terms of conveying a lot of information, making it possible to record so people can get value for a long time after the webinar, and giving an opportunity for the audience to participate with their own questions.… Read the rest

New G-Wizard Editor Release and GWE Webinar Recording Available for Download

Feb 7, 2014   //   by Bob Warfield   //   Blog, GCode, Software  //  3 Comments
guitarcat

I just uploaded G-Wizard Editor v1.46.  It contains several handy improvements:
– Changed so all tools are automatically made visible at startup. Had people turn off tool visibility, quit, come back later, and wonder why the tools weren’t visible in the backplot.
– Add a “My Post Isn’t Here!” button to Setup.
– Fixed problem that prevented setting color of tool in backplot.
– Fixed some problems saving spindle power curve parameters on the machine profile.
– Added the ability to put a hole at a specific XY in the Conversational Hole Wizard. This saves some steps over using the Grid layout to do it.… Read the rest

Ultimate Benchtop CNC Mini Mill Part 4: Motion Performance

Feb 6, 2014   //   by Bob Warfield   //   Beginner, Blog, CNC Projects, DIY CNC  //  9 Comments
BridgeportMotionPerformance

This is the fourth installment of our Ultimate Benchtop CNC Mini Mill series.  The series is dedicated to helping DIY CNC’ers work through the design considerations and tradeoffs for their CNC Mill projects.  Here are the installments so far:
Part 1:  Donor Mill
Part 2:  CNC Mechanicals (Ballscrews and Such)
Part 3:  Close Loop vs Open Loops (Servos vs Steppers)
The next thing I want to get into is Motor Sizing, but before we can do that properly, we need to understand what Motion Performance will be required from our machine.
To put it simply, Motion Performance is how fast our feedrates need to be.  … Read the rest

CNC Project Ideas: Reskin Something

Feb 5, 2014   //   by Bob Warfield   //   Beginner, Blog, CNC Projects, Cool  //  3 Comments
Tennuis

I hear you’re a machinist, you’ve got access to CNC machines, and you’re dying to do a cool project that your friends will love.  Youo just need the right idea.  How about this:
–  Take an existing product.
–  Discard, some all, or none of it.
–  Create a new skin for it that radically changes the product to something MUCH better.
That’s a Reskinning Project.  There’ll all over the web if you look carefully.  Here’s some ideas to get you fired up to Reskin something:
PC and HiFi Case Mods
Reskinning PC’s and HiFi’s has been going on a long time and there are some very cool results out there.  … Read the rest

3D Printing for Patternmaking and Foundry Work

Feb 3, 2014   //   by Bob Warfield   //   3D Printing, Blog, Cool  //  2 Comments

Sand such as is used for casting is a good medium for 3D printing.  The green sand already used for casting is a combination of ingredients that help it to hold the shape of the pattern placed in the sand.  The pattern is a reproduction of the part to be cast so that the sand forms a negative image of it.
In 3D printing the mold is built up layer by layer in typical 3D printing style.  Binder chemicals are used to lock down the sand in the proper shape.  Casting hollow parts requires cores, which can also be 3D printed at the same time.  … Read the rest

Two Webinars This Week: GW Calculator and GW Editor

Feb 3, 2014   //   by Bob Warfield   //   Beginner, Blog, Software  //  2 Comments
OLD RADAR

We had some technical difficulties last week–apologies to all who tried to attend but couldn’t.  The software had some problems that didn’t show up during practice (natch!).  I have now switched to using GoToMeeting for webinars, which is what several of you recommended.  All that said, we did manage to hold our first webinar for at least a few attendees and I promised those who didn’t get in a repeat performance with better software this week.  I had also intended to do one for G-Wizard Editor, so that means we’ve got two webinars lined up:
Introduction to G-Wizard CNC Calculator
When: Tue, Feb 4, 2014 11:00 AM – 12:00 PM PST
Topic: Get a guided tour of G-Wizard CNC Calculator and learn how easy it is to get high quality feeds and speeds.… Read the rest

And Now for Something Completely New: CNCCookbook Webinars

Jan 29, 2014   //   by Bob Warfield   //   Blog  //  1 Comment
1950s-3d-movies

One of our biggest missions at CNCCookbook is to make things simpler.  Part of that is getting information out in whatever format people want to consume.  Not everyone consumes information in the same way.  If you haven’t guessed from all the many articles running around on CNCCookbook, I am partial to reading.  But, I also understand the value of images and of video.  It seems like I never get enough videos made to cover all the topics people would like or sometimes even to stay current with all the new features in our G-Wizard software.  More recently, I have had an increasing number of folks as for live telephone support.  … Read the rest

Why I Love CNCCookbook: A Chance to Make a Difference

Jan 29, 2014   //   by Bob Warfield   //   Blog, Business, Cool, Manufacturing, Software, Techniques  //  No Comments
1a35329u_3

One of our users posted a note in our User Club today that made me feel good.  Here’s what he had to say:
I just got my yearly review at work, 4.28 % raise! Hey Bob, 6 months ago I knew nothing about milling. I couldn`t even spell VFM. I spent 14 hours training on what buttons to push before our mill operator went on vacation. I searched the internet for info. on milling and came across your web site. Every night after work, I read the vast amount of information you have posted on milling. I purchased both GWE and GWC.… Read the rest

Tormach Lathe Tooling and News on a Shipping Date

Jan 28, 2014   //   by Bob Warfield   //   Blog, Cool, Products  //  18 Comments
ERHolder3

I wanted to give another update on my Tormach CNC Lathe this week.  I’ve been one of the Beta Testers.  Good news is that Tormach has announced the Beta Test is winding down and they’re hoping to make first sales in Q1 2014–right around the corner, in other words.  I know from my perspective the Beta Testing has gone extremely well with only minor teething troubles, all of which were corrected.  In addition, the Beta Team gave Tormach a number of constructive suggestions for how to improve the already very nice machines and most all of these were accepted.
I want to talk just briefly about the Tooling for the lathe.  … Read the rest

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