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While we’re on the subject of nice shopmade tools, check out the cool diamond knife sharpener:
Put a high quality commercial diamond wheel to work and your pocket knife will be razor sharp in no time!
You gotta love massively over-engineered and finely crafted shopmade tooling!…
Bodysnatcher is a professional machinist I’ve been following over on CNCZone. He has a lathe similar to mine, and has made all sorts of interesting tooling for it. These photos are of a 5C collet indexer he made (comments are his):
Build Photos (click to enlarge):…
How different are the performance specs of “Pro” vs “Hobby” servos?
I’ve heard a lot of claims, but it’s easy enough just to go look at the published specs. Here, I’ll take a Yaskawa 750W Sigma-5 AC Servo (typical axis drive for a Haas VMC) against the HomeshopCNC 850 oz-in DC servos I have installed…
Saw a great question over on CNCZone this morning. A beginner was trying to understand why so many cutter manufacturers publish ranges of surface speed (SFM) and chipload (inches per tooth) values for their cutters. I suspect his broader question was how to know what number in the range to use when calculating the feeds…
I continue to be amazed, entertained, and intrigued when I see Simpson36’s work with his fancy 4th axis rig on his scratch-built mill. His latest is showing how to cut splines and other fairly exotic shapes using a lathe tool lashed to the side of the mill head:
Something to note: this is a very…
Since having published the details of where to obtain it in small quantity (directly off their web store), I’ve seen a number of folks over on CNCZone pick up a tube. One fellow (gd.marsh on CNCZone) is now testing the spindle on his Chinese mill to 8000 rpm–cool beans!
After seeing all this, I finally…
One of my readers (thanks, Pablo), sent me a link to this great idea over on the Candlepower forums. Lots of interesting stuff over on Candlepower, BTW. Folks over there are making custom high-tech flashlights, and a lot of the work is really cool.
This idea is designed to make it easier to mount medium-sized…
I love my “Traminator” (what I call the dual indicator tramming tool I received as a gift), but had thought of it as a very special purpose tool only useful for tramming the mill until I saw this picture on a Practical Machinist thread:
Ray Behner created this tool, and what a cool idea it…
Kurt-style vises have 1001 uses, I am sure. Maybe this is 1002. Having my nice set of Vise Jaws of Doom sitting on the table from an engraving project gave me an idea. Could they be used as a sheet metal brake? You betcha!
Here are the jaws:
Here they are being used to bend…
Nice video of a disk brake to lock a 4th axis for machining:
The caliper works by screw action. The cylinder rotates a screw that snugs the brake pad on the rotor. This is a very high performance shopmade 4th axis. The servo will spin it fast enough he can use it as a lathe.…
I like to fiddle a bit with my machines every now and again to make sure they’re adjusted to tip top condition. The CNC mill seems to benefit from this the most. For example, the gibbs and sometimes the Mach3 motor tuning parameters benefit from periodic adjustment. Perhaps surprisingly, the tuning varies depending on conditions.…
Interpolated holes are a great test of a CNC milling machine because so many things have to work right for one to come out round and on dimension. The first reaction when an interpolated hole is not round is often that it is a machine problem. Backlash on one or more axes, improper number of…
Microprocessors and computers enable great simplification of mechanisms and the addition of lots of functionality that would have been impractical or expensive. Consider how much more your handheld iPod MP-3 player can do versus an Old School Jukebox.
The same is true in the machining world. A CNC mill or lathe offers endless flexibility compared…
Dave is the “D” in “Fadal”, so he knows a thing or two about CNC. Lately he has been building tool changers and enclosures for Asian mills:
Don’t they look great? Nice powder coated sheet metal will do wonders for the aesthetics and is very functional.
A little more about the tool changer…
You know how it is when you’re doing some job for the first time: the little things really slow you down. I’m trying to get the home switches working on my mill. I’m tired of having to edge find every time the mill faults or I hit the E-Stop, not to mention how the position…