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Browsing articles from "February, 2012"

Calibration: Essential for the Best Feeds and Speeds

Feb 23, 2012   //   by Bob Warfield   //   Blog, FeedsSpeeds, Software, Techniques  //  No Comments

Professional machinists are involved in a highly competitive business.  They need to eek out every drop of productivity they can.  Recently on Practical Machinist, someone asked where to get the best feeds and speeds chart, which produced quite a bit of discussion from the readership.  There’s a lot of wisdom on that board.  One individual,…

Help Us Double Our Installed Base in 2012

Feb 22, 2012   //   by Bob Warfield   //   Blog, Business, Software  //  2 Comments

2011 was a great year for G-Wizard sales, but 2012 has so far trumped it.  Sales are off to a great start.  We’re in spitting distance of being able to double our installed base, so we decided to enlist your aid in the process.
At some point in the second half of each month, we’ll…

10 Things Beginning CNC Milling Machine Users Need to Succeed

Feb 22, 2012   //   by Bob Warfield   //   Blog, Techniques  //  18 Comments

Let’s assume you have a working CNC machine that you’ve just acquired, but that you know very little about CNC.  Let’s further assume it is a mill and that you will primarily be focused on cutting metal.  You’re probably ready to start milling custom chopper parts, build a tool changer, or maybe scratch build a…

Harbor Freight HVLP Spray Guns Work Pretty Well

Feb 21, 2012   //   by Bob Warfield   //   Blog, Products  //  No Comments

I’m in the middle of painting panels for the flood enclosure I’m building for my mill and wanted to pass along a mini-review of the Harbor Freight HVLP spray guns I’ve tried.  I started with them more expensive one they sell, #93305:

Not such good luck with #93305…
To be honest, I didn’t have very…

G-Wizard Calculator Version 1.630 Just Posted

Feb 20, 2012   //   by Bob Warfield   //   Blog, FeedsSpeeds, Software  //  No Comments

Release 1.630 is a minor feature release:
– We’ve added buttons so you can go to the correct web page to Purchase G-Wizard as your trial is running out or to renew your subscription if it is running out. It’s also easy to see how many days are left on your trial or subscription as…

A CNCCookbook Milestone: Over 1,000,000 Visits a Year

Feb 20, 2012   //   by Bob Warfield   //   Blog, Business  //  2 Comments

Starting the week between Christmas and New Year’s, CNCCookbook began doing quite a few transformations to give the site an overall facelift.  We revamped our menus and merged the WordPress blog into the main site (it had been a separate site during most of 2011).  In addition, we’ve redoubled our efforts to publish more quality…

More Elbow Room for the CNCCookbook Blog

Feb 18, 2012   //   by Bob Warfield   //   Blog  //  No Comments

I like to use larger pictures (the site’s standard is 800 wide) so you can see the details.  People these days have larger screens too, except when they’re on an iPad or something similar.  When I did the update to our blog recently, I used a WordPress theme called “Boldy” that is a fixed width…

Fixturing with Vacuum Tables, Vacuum Chucks, and Vacuum Clamping Systems

Feb 18, 2012   //   by Bob Warfield   //   Blog, CNC Projects, Products, Techniques  //  11 Comments

I’ve been interested off and on in vacuum fixturing for quite a while.  My brother is in the design stage of a big CNC router table, and wants to build in a vacuum table capability.  I had been dimly aware that it is also applicable to CNC milling operations on metal, but hadn’t really delved…

Use “Corncob” Roughers to Kick MRR’s Up a Notch

Feb 15, 2012   //   by Bob Warfield   //   Beginner, Blog, FeedsSpeeds, Software, Techniques  //  3 Comments

“Corncob” Roughers are endmills that have serrations on the flutes to help break up the chips.  You’ve probably wondered what the advantages are for these, so I thought I’d put together a post and talk about them a bit.  These roughing endmills are only useful for roughing as the serrations leave tracks on any walls…

Why Doesn’t My CNC Machine Move the Cutter Where I Told It To?!??

Feb 12, 2012   //   by Bob Warfield   //   Beginner, Blog, GCode, Software, Techniques  //  2 Comments

Let’s start out by saying this article is not about troubleshooting a machine that isn’t performing correctly.  There are cases where seemingly innocuous commands to a properly set up and adjusted CNC machine do not result in the moves that were commanded.
How can that be possible?
The short answer is that this is caused…

A New John Grimsmo Knifemaking Video with some G-Wizard Tool Deflection Work

Feb 12, 2012   //   by Bob Warfield   //   Beginner, Blog, CNC Projects, Software, Techniques  //  No Comments

If you’ve been reading our blog for very long, you’ll know we’re fans of John Grimsmo’s knifemaking videos.  In them he uses a little hobby mill to make custom parts for knives, which he sells to collectors.  There is a lot of fascinating and useful information in them, but beyond that, they’re just fun to…

High Resolution 3D Printer

Feb 11, 2012   //   by Bob Warfield   //   3D Printing, Blog, CNC Projects, Cool  //  No Comments

This is an amazing project and video I saw recently on Hoss’s 3D Printer thread over on CNCZone:

3D printing an alien skull in high resolution…
There’s not a lot of information available about how this printer works, but there is a blog with some interesting pictures:

Whistle done in typical RepRap melted filament style……

Ever Use a G-Code Simulator to Debug Your Part Programs?

Feb 7, 2012   //   by Bob Warfield   //   Blog, GCode, Software, Techniques  //  No Comments

Tired of cutting air to see whether your g-code program is going to work?
We just added a new chapter to our G-Code Tutorial that shows how you can use a G-Code Simulator like G-Wizard Editor to help diagnose your part programs.

Lots of good info there about what a good g-code simulator can do…

Mitee Bite Clamps and Shopmade Pallet Fixture for Small Parts

Feb 5, 2012   //   by Bob Warfield   //   Blog, CNC Projects, Techniques  //  1 Comment

One secret to productivity on the mill is to use as much of the envelope as you can.   The more parts you pack onto the table, the more it can get done without assistance while you work on something else.  When it comes time to pack a bunch of small parts on, the ubiquitous vise…

Fixturing on a Hobby Mill for Making Fly Fishing Reels

Feb 4, 2012   //   by Bob Warfield   //   Blog, CNC Projects, Techniques  //  5 Comments

Here’s a great video from the Eclectic Angler showing his fixture for making the side plates for a fly fishing reel:

Love the use of the toggles to make it easy to pop a new workpiece into place.  Note also the pins that position the workpiece at the top and left before the toggles are…



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