- Tim on Hybrid Machining: Combining Additive and Subtractive in One Machine
- Rick Linnabary on The CNCCookbook Software Giveaway is Ending Soon!
- Michael on Standard Work and Takt Time: Lean Manufacturing Principles Part 5
- Bob Warfield on The CNCCookbook Software Giveaway is Ending Soon!
- Brad on The CNCCookbook Software Giveaway is Ending Soon!
I saw this one over on Garage Journal, which is a very cool web site if you like garage and home shop organizational articles. Here is Von Dutch’s tool box:
I love it just for the hand lettering (if you didn’t know, Von Dutch was an amazing pin striper of hot rods, among many other things) and the great yellow color. I love rolling tool boxes and seem to buy another one each year. You can never have enough drawers and if you wait for the sales, they are way cheaper than the commercial style Lista-type cabinets. I buy the nicer ones with the ball bearing slides. … Read the rest
Just read an interesting story on 3Ders.org: Dell has just ordered 5000 3D printers from Polish-maker Zortrax.
Zortrax went through a Kickstarter campaign to help fund the development of the printer, and they’ve now launched their product and are apparently geared up for very large orders such as this one from Dell.
It’s a slick looking machine with capable specs at a very decent price ($1895):
Zortrax M200 Plug and Play 3D Printer
Build volume: 205x205x190mm
Nozzle diameter: 0.4 mm
Layer resolution settings: 100, 150, 200, 300 microns
Filament: 1.75mm ABS, PC-ABS and Nylon
SD card holder
Three different printing speed modes
The sample 3D prints from their web site look very high resolution:
All this just begs the question: What’s a company like Dell going to do with 5000 of these cool 3D printers?… Read the rest
We just completed our 3rd CAM Software Market Share Survey. We did the first one in 2010 and our second one in 2012. Each one garnered several hundred responses in a very short time, and so should be a statistically significant sample of respondents. I’ll be grouping the results into three categories based on their pricing just as I have in the past:
- High-End: These are packages priced at the High-End and that typically are sold by dealers.
- Tiered: These are packages that can be had in a range of configurations from fairly inexpensive up to packages that compete with the High-End.… Read the rest
This was just too cool to pass up. Suppose you are in a post apocalyptic dessert world or perhaps an astronaut on Mars. You’d like to do some 3D printing, but there’s no source of filament. Just dessert and sunlight as far as the eye can see. Well, if you had this 3D printer, you could use solar power to fuse dessert sand into glass:
Totally impractical? Yes.
Totally cool? YES!
The technology is similar to laser sintering, but with sand and sun power focused by a big Fresnel lens.
(Thanks to Trevor for bringing this video to my attention)… Read the rest
Another year is upon so it is once again time to do a big survey. I like to alternate CAD and CAM surveys year by year. We did a CAD survey last year and a CAM survey at the end of 2012. These surveys are very popular because we always get several hundred respondents and I know of no other place to get a good cross-section of machinists participating in a survey so we can all see the relative popularity of these packages. In addition, by comparing the results year over year, we get a chance to at least glimpse the gain or loss of market share by these different players.… Read the rest
Here’s something you don’t see every day–granite being cut by a giant CNC diamond wire cutter into these exotic shapes for art and architectural use. Here are some samples of this kind of work:
Pretty amazing work from stone!
And here is the Breton CNC Machine that makes it possible:
As you can see, the machine somewhat resembles a giant bandsaw. There are two axes of movement enabling it to take slices out of the stone with a diamond coated wire. For the more ordinary task of slicing a big block of quarried stone into slabs suitable for counter tops and the like, they make multi-wire machines that slice straight down and create many slabs at once.… Read the rest
Here is Part 2 of our Ultimate Benchtop CNC Mini Mill design series. Part 1 was about selecting the Donor Mill. Part 2 will be concerned with selecting your CNC mechanical components, specifically the leadscrews, ballnuts, motor mounts, and drive system. We will look into motors, motor sizing, drives, and the ever popular steppers versus servos discussion in Part 3.
Leadscrews (Or should I say “Ballscrews?”)
You’ll be replacing your Donor Mills leadscrews with some alternate leadscrews as one of the first projects you’ll tackle in your DIY CNC Mini Mill. The mill’s existing ACME leadscrews, even on high quality manual machines, are just not suitable for CNC. … Read the rest
This photo series and CNCZone thread link show how Ray Livingston engineered a double ballnut system to reduce backlash:
The components. The bracket that keeps the ballnuts from rotating relative to one another replaces the old clamp for the ball return circuits…
A roll pin acts as a sliding guide between the two ballnuts…
Here is what it looks like assembled. Disc springs go in the middle to keep the two spread apart and fight backlash…… Read the rest
Here’s one thing for certain: if you can’t properly bid on jobs it’s going to be hard to manage your profitability. If your quotes are too low, at the very least you’re not making as much profit as you could and at the worst you could be losing money on your bid. If your quotes are too high, then you’re probably not going to be competitive and you’ll have to run through a lot more quotes than your competitors for each successful contract you win. If the situation is bad enough, you may not be winning any business at all.
Recently, I came across a Modern Machine Shop article that suggested that the best shops have a 70% average quote to book ratio, while the average shop has a 51% ratio. … Read the rest
If you could build the ultimate benchtop CNC mini mill for your home workshop, what would it look like?
We’ll take a look at that in this multi-part series which is aimed at helping the DIY CNC crowd get a handle on some of the up-front design considerations they should be thinking about for their CNC Mill conversion projects. In this first part, we’ll consider criteria for choosing which donor machine to start with.
Donor Mill Considerations
First thing in a CNC Mill project is to choose the donor mill the conversion to CNC will be based on. There are three important considerations if you could choose any donor mill to start from:
1. … Read the rest
CNC has the potential to make any imagined design real, and perhaps successful as a product. There is an element of art if the design is inspired enough. Perhaps you’re thinking of designing the ultimate CNC product of some kind. Maybe it’s purely for your personal enjoyment, or maybe you have in mind something that would be a good Kickstarter project. One of the things that may help is a good scrapbook of ideas to help stimulate the imagination. I like to use Pinterest to collect such visual imagery. It’s available there in great abundance. As I was recently looking over some of my Pinterest images trying to get ideas for a new PC Case design, I started wondering about some of the different design details CNC can help with and decided to write this post that categorizes some of the motifs. … Read the rest
What beats a soccer ball to the face? Why our G-Wizard Software, of course!
Just a quick reminder to let you know our G-Wizard Software Sale ends Monday. This sale offered our biggest discounts of 2013 and there’s only a few days left to take advantage if you haven’t already.
You can take 20% off featured products using the “20OFF” coupon code in the shopping cart:
- Featuring all our top products.
- Sale runs through Jan 6, 2014.
- To see the discount, click the Buy Now button, go to the shopping cart, and enter your 20OFF coupon code.
Here are some of the deals we’re offering:
- G-Wizard Calculator 3 Year Subscription: Regularly $129, on sale for $103.20. … Read the rest
Let’s kick off 2014 with a topic machinists love to chew the fat over:
Should CNC Machinists Learn Manual Machining First?
I’ll go on record as saying I learned it first and based on that experience I think it is very beneficial but not a requirement. I say that because learning manual first limits the number of new concepts a beginner has to master. Jumping directly into CNC, particularly if we’re talking about every aspect from CAM to chips, is a much bigger commitment. OTOH, many feel it is a requirement every CNC machinist should fulfill.
I’ve prepared a survey so we can quantify everyone’s opinions about the matter and maybe see what the consensus is among machinists on this topic. … Read the rest
2013 is just about done and I can say with certainty what the most popular pages and blog posts have been for CNCCookbook over the course of the last year. If you didn’t catch these the first time through, be sure to check them out as they’ve gotten a lot of attention from your peers. What follows are the pages and blog posts listed in order of popularity.
Most Popular Pages
G-Code Course: Our g-code course has been a perennial favorite since the beginning. Where else can you find such in-depth g-code training completely for free?
G-Wizard Calculator: Of course a great many visitors to CNCCookbook check out the G-Wizard Feeds and Speeds Calculator.… Read the rest
A number of people use G-Wizard Editor to give them accurate information on how long their g-code programs will take to run. Accordingly, I made a number of improvements to GWE version 1.37 to make it more accurate. For example, there is a new simulator adjustment on the Machine Profile page that lets you apply a percentage fudge factor to the time calculations for each machine. Typically, GWE is too optimistic due to acceleration issues–machines frequently can’t accelerate the cutter fast enough to travel at the the specified feedrate. We’ll be looking into adding acceleration in various ways to GWE’s calculations in Q12014, but for now, the simulator percentage adjustment can help quite a bit.… Read the rest