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Browsing articles in "Blog"

I’m Back, Though Not 100%

Sep 24, 2010   //   by Bob Warfield   //   Blog  //  No Comments

People were starting to write and complain they hadn’t had their CNCCookbook “fix” in a while. Sorry about that folks–I was off in Cozumel, Mexico on a diving vacation. All work and no play makes Bob a very dull boy. At least now I’m back, though not 100%. I seem to have either a particularly…

Drawbots

Sep 19, 2010   //   by Bob Warfield   //   Blog, Cool  //  No Comments

I love the idea of Drawbots!
What’s a Drawbot? It’s a little CNC machine used for drawing or painting. They’re typically 2D devices that are suspended on cables. If you’ve been to an amphitheater event any time recently that had a lot of video, you may have seen a video camera suspended on something similar.…

Ferrari V4 Motorcycle

Sep 18, 2010   //   by Bob Warfield   //   Blog, Cool  //  No Comments

Crazy cool is all I can say:

Nothing like a good rendering to stimulate the appetite, but it leaves you feeling hungry, doesn’t it? How long before some intrepid CNC’er decides they can’t wait to have one, I wonder?…

Making a Lathe Compound from Scratch

May 30, 2010   //   by Bob Warfield   //   Blog, CNC Projects, Manual, Techniques  //  No Comments

This was an enjoyable video I came across:
I might follow a similar approach to make a gang slide for my Lathemaster 9×30.…

Is Carbide Always Faster?

May 25, 2010   //   by Bob Warfield   //   Beginner, Blog  //  4 Comments

I have had several people ask why the chiploads for HSS are higher than Carbide all other things being equal in G-Wizard. After all, isn’t Carbide always faster?
Well not always. Carbide is much stiffer than HSS, and this can be helpful to reduce chatter or with longer reaches. This is why we can use…

Limit/Home Switch Noise

May 23, 2010   //   by Bob Warfield   //   Blog, Techniques  //  1 Comment

I recently got my Home Switches going and decided to go ahead and enable them to act as limit switches too. That’s when I became aware of just how much noise there was on the lines. I was getting a gratuitous limit fault from noise about every 2 to 3 minutes. No worries, I did…

Mach3 Users: Make all of your Accelerations the Same on your Axes!

May 23, 2010   //   by Bob Warfield   //   Blog, Software  //  No Comments

I discovered this was a problem while making my tapping arms. Due to the high rate of feed (50 IPM) and some abrupt changes of direction to follow the profile, I hadn’t really encountered the problem before. I had heard on one individual having an issue with wildly different motor tuning on a knee versus…

50 IPM Passes on the Tapping Arm

May 22, 2010   //   by Bob Warfield   //   Blog, CNC Projects  //  No Comments

I got some work done on the tapping arm project yesterday afternoon. I made the two swing blocks that are the uprights in the parallelogram linkage. Here is what the overall arm will be:

The swing blocks are the red parts…
While making the swing blocks, I wanted to play with some faster milling feeds…

Gang Tool a Turret

May 18, 2010   //   by Bob Warfield   //   Blog, Techniques  //  1 Comment

Clever idea to get an extra ID tool in a turret (there’s never enough slots):

Think of it as a gang tool slide on your turret……

Way to Get Social, Okuma and Sandvik!

May 18, 2010   //   by Bob Warfield   //   Blog, Business  //  No Comments

I just came across the Okuma Winner’s Blog, thanks to a thread on PM by the winner.
What’s going on here? Just some clever tried and true marketing tactics well applied to the Social Web.
Seems that Okuma gave away one of their machines for 2 years to a deserving (in their opinion) shop based…

The Swing-Away Tailstock

May 17, 2010   //   by Bob Warfield   //   Blog, Products, Techniques  //  No Comments

A fourth axis can lead to tight quarters inside a mill enclosure. Enter the swing-away tailstock. Nikken tailstocks for fourth axis work have a swing way feature:

The tailstock up and ready for action…

And here it is down and out of the way so the part can be loaded…
Thanks to Boris on the…

What Are the Best Toolholders?

May 17, 2010   //   by Bob Warfield   //   Blog, Techniques  //  1 Comment

According to Google Analytics, one of the most popular pages on this site is the one about surface finish for milling. As a result, I am busy updating the page to include a bunch of newer information I’ve come across since I first wrote it.
For example, as part of the research, I recently read…

Rolling Into a Cut

May 15, 2010   //   by Bob Warfield   //   Blog, Software, Techniques  //  No Comments

Here’s a great tip, courtesy of Sandvik, with a hat tip to Don “Milacron” at the PM Boards. This Sandvik video explains the gist of it:
I’m fascinated by these geometric effects. Chip thinning is another. Isn’t it interesting how Mother Nature tends to like circles better than straight lines? Chip thinning, rolling into a…

I almost forgot: Shop Air!

May 11, 2010   //   by Bob Warfield   //   Blog, CNC Projects  //  No Comments

Somehow or other, I forgot to mention that I got a new compressor and shop air plumbing into operation last month. I now have a nice quiet Eaton 5HP 2 stage compressor installed in a room completely separate from my shop:

Way better and quieter than the Craftsman I had been putting up with, and…

Next Project: Tapping Arm

May 11, 2010   //   by Bob Warfield   //   Blog, CNC Projects  //  No Comments

Having finished my home switch project for the CNC mill, I started thinking about what my next project ought to be. I wanted something simple but very useful that would combine a little CNC with a little welding and fabrication. A tapping arm is perfect for that task as I was reminded when reading a…

 

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