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Browsing articles in "Techniques"

Clever Binder Part Storage

Sep 24, 2010   //   by   //   Blog, Techniques  //  No Comments

There are never enough good ideas for organization, but I really liked this idea of using 3-ring binders for small parts storage I saw on the MAKE magazine blog:

Nice color code diagram on the outside of the resistor storage binder…

Plastic pockets hold the goodies…
There’s no end of things you could put in…

Deep Pockets

Sep 24, 2010   //   by Bob Warfield   //   Blog, Software, Techniques  //  2 Comments

Deep pockets are hard to machine. You’ve got tool rigidity problems with long tools to reach down deep coupled with chip clearance as the deeper the hole the harder it is to get the chips out of there. Couple that with thin walls and you have this part Eric Tate recently showed on the Yahoo…

Climb Milling a Must for Thin-Walled Parts

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

Thin walled parts are a real pain because the thin walls want to vibrate like a tuning fork. When that happens, you’ve got trouble, big trouble, and its name is chatter. I was reading a fascinating article recently that made the point that when milling thin walls, climb milling is a must. Because climb milling…

Deciding on Best Depth and Width of Cut When Milling

Sep 24, 2010   //   by Bob Warfield   //   Beginner, Blog, Software, Techniques  //  No Comments

I got a note recently from a G-Wizard user who wanted to know how to decide on best depth and width of cut when milling. It’s a great question. Most machinists, I suspect, use rules of thumb and habit more than anything else unless the situation dictates something in particular based on the dimensions of…

Cutting Chatter When Precision Boring

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

I just came across what looks like a great blog from Criterion, the boring head people. They had a great tip to reduce chatter: make sure your depth of cut is greater than the radius on your cutter. It makes sense, and should apply when turning too. Here is how they explain it.
Consider the…

Of Pallets and Parts

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

I’ve always like the idea of pallets that can be set up with new parts while the CNC machine is working on another set of parts. Sort of like quick-change fixtures of a sort. You know it has to contribute to productivity, because when the machine stops you can swap the pallets real fast and…

Ballnose Surface Finishes

Sep 24, 2010   //   by Bob Warfield   //   Beginner, Blog, Software, Techniques  //  No Comments

It’s a small world, I guess. No sooner did I get done adding a section to my Turner’s Cube page showcasing Widgitmaster’s lathe-turned versions when I find him asking a question on CNCZone about how to calculate stepover to achieve a desired finish when profiling with a ballnosed cutter. As it happens, this function is…

Interpolating Holes vs Twist Drills

Sep 24, 2010   //   by Bob Warfield   //   Beginner, Blog, Software, Techniques  //  3 Comments

They say nothing removes material faster than a twist drill. Just one problem, it only removes a cylinder of it, so it can’t really profile or pocket (the exception being pluge roughing, but I’ll save that for another time). Although, profiles and pockets often begin with the need to get the endmill down to proper…

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.…

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…

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……

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…

Yaskawa Has the Mojo

May 7, 2010   //   by Bob Warfield   //   Blog, Techniques  //  No Comments

I correspond with a lot of machinists who bring me ideas for this blog or otherwise just want to talk over something they see here. My post on Yaskawa vs “Hobby” servos shook loose an interesting one. This is a machinist I’ve had a lot of great discussions with who does a lot of retrofits.…


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