The adventure continues! We had a great turn out at the last ShapeOko build event. Now it’s time to assemble the gantries and do some wiring. Join us this Wednesday July 30 from 7-10PM in PS:One’s shop to see the machine really take shape, and maybe we’ll get to see it move, too. Learn about open hardware and the ShapeOko 3D carving machine. This event is open to the public and is great for newbies and experienced CNC’ers, too.
Archive for the ‘New Equipment’Category
Curious about computer numerical control and open hardware?
Want to meet and help build PS:One’s newest machine? Join us
for a group build of an upgraded ShapeOko 2 CNC router,
donated by Inventables! Everyone is welcome, newbies and
experienced alike – if you can tighten a bolt, you can
assemble a ShapeOko. Please RSVP to the Meetup group or cahira_mirrored [at] yahoo [dot] com, so we
have some idea how many people to expect.
Wednesday, July 16th
Everyone is welcome, although only members will be authorized (at a later date) on the machine once it’s completed.
Have you ever felt dissatisfied?
Have you ever woken up in the morning, considered all the projects you had ahead for the day, all the worthless meetings and teleconferences, and just said, “blah?”
You take a sip of your morning coffee, expecting a moment of brightness, goodness, something to cling onto by the fingernails, to hold you throughout the day, as you say to yourself, “You know, today is gonna suck, but at least I have this freshly brewed Java Supremo from Overpriced Cafe”?
You take that sip… and you say to yourself, “Really? That’s it? This is how my day is going to begin, not with a bang, but with a whimper?”
Yes, I too have felt that way. I had wished there was a way I could seek out bold new flavor profiles in my morning coffee, beyond just “mild” “medium” and “strong.” I wished there was a way to hack my morning coffee.
Thankfully, there are options. Today, we are trained to only look for coffee at our grocer, or perhaps at the local cafe where we can pick and choose from pre-selected and pre-roasted coffee, perhaps even pre-ground, for our approval. Or, we can do things the way our great-great-grandparents did it, which is, we roast our own damn coffee. There are many ways to do this, one of which is with an air-pop popcorn popper.
That’s right, this noble device, previously only a monotasked tool to deliver copious amounts of fluffed corn to your gaping maw whilst watching reruns of ‘Love Boat’ and ‘Magnum PI’ can also serve as a way to roast our precious coffee the same way the pioneers did. Well, not really, but close enough.
Currently only one batch of green coffee beans has been successfully roasted and served to unsuspecting denizens of PS:1 (No, those are not flavor crystals, THAT’S REAL FLAVOR DANGIT) to glowing reviews. This is only a proof-of-concept batch at this point, with much more work and experimentation to be conducted, but with continued testing and sampling, the overall goal is to create a viable procedure, optimize the process, and eventually create the capability at PS:1 to roast coffee, and tailor to your specific discerning tastes.
The output of this project will include a wiki page with optional training, an understanding of the variables of coffee roasting and how to tweak the process to serve your tastes (i.e. using APPLIED SCIENCE to understand the roasting process), and recommendations on where to source green coffee beans.
More information is forthcoming in a future 300 Seconds of Fame!
Thanks to the effort and generosity of a committed group of PS:1 members and project donors, we now have a Bridgeport milling machine. Special thanks go to Zlotan for keeping up the project momentum. Thanks to Tucker for setting the goals and doing a bunch of research and leg work. And a big thank-you to Bart Dring for hooking us up with a sweet deal on a great machine and arranging the move.
There will be more to say and more to report as we integrate the mill into our shop. Stay tuned for further announcements.
At the next CNC Build Club, on Thursday 10/24/2013 at 7:00pm, we are going to have a demo of the, soon to be released, Shapeoko 2 CNC router. The ShapeOko was designed by local inventor, and PS:One friend, Edward Ford. The original version was extremely popular. The new version adds many new features.
- Larger work area.
- Easier to expand
- Open front and rear for feeding stock through
- Dual motor Y axis is now standard
- More ridged
- Belts lay flat and are easier to install
It will go on sale at Inventables very soon. Inventables will also be giving away one milling bit starter kit at the meeting. This a a kit of 5 solid carbide 1/8″ diameter bits. It includes 2 spiral upcut bits, 2 straight flute bits and 1 ball end mill. You must be registered on Meetup for this meeting and present to be eligible for the bit kit. The meeting is open to members and non-members.
For the past few months, my CNC Build Club project has been building a <a href=”http://www.shapeoko.com/”>ShapeOko CNC mill</a> from a kit Jeff donated to PS:One to replace the machine hacked into a pick-and-place. The ShapeOko belongs to PS:One and will (hopefully) be a permanent part of the space.
On July 21st, I moved the machine to its home in the shop, finished wiring it up, and tested the motion of the stepper motors. It moved like it was supposed to on the x, y, and z axes, so I moved on to drawing the Hello World job (the ShapeOko logo) in the air. That worked perfectly, too. So now it was the moment of truth – time to find a drawing implement, tape it to the gantry, and send the GCode to draw the logo on paper.
After several attempts at finding the right pen or marker, and figuring out how to tape it securely, this was the result:
A very happy me, and a successful Hello World.
I started this project to learn more about CNC projects from the ground up. Along the way, I learned a bit about tapping, soldering, and Arduinos too. Here’s a look back at it:
This was the beginning:
Then I added the Z-axis:
Edward Ford, the Shapeoko’s inventor, happened to be at the space the night I finished the mechanical build of the Shapeoko:
After tweaking and tightening up the mechanical build, I assembled all the electronics I would need, mostly from donations to the project. (Thank you!) Edward came back for ShapeOko night as part of CNC Build Club, and we got the machine wired up. Unfortunately, the x-axis didn’t move properly, probably because the GRBLshield controller got damaged during rework. So Bart donated another GRBLshield, and Ryan did some heroic rework on its connectors, and this one worked!
Colin donated a Dewalt spindle to the project, and the next step is to get some end mills, test the machine’s milling, and certify some people. I’m also looking at installing some limit switches on the machine. Of course, there are also options like a different spindle, a dual-driven y-axis, or a more robust z-axis. Those will be things for the CNC Build Club and other interested members to decide on.
I got this far with more than “a little help from my friends”. Thank you to the people who offered help, parts, or advice (in no particular order): Jeff, Jay, Steve, Colin, Ryan, Edward, Cat, Bart, Jeremy, Fernando, Jesse, and Everett. If I accidentally left you out, I’m sorry!
Our scanning electron microscope came with an Oxford Isis EDX detector that we were told was non-functional. After a little poking around, I discovered that the replacement power supply which supposedly didn’t work was shipped from London, where the default power is 240V. After changing the voltage, the computer suddenly recognized the electronics, and it passed all the self tests. That looked like a good sign, so the next step was to acquire liquid nitrogen, which is needed to cool the detector.
Fortunately, one of our members owns NFC, a company that, among other things, sells liquid nitrogen. He loaned us a dewar of LN2 so we could test it out. After transporting it back to the space, I asked Everett to watch from a safe distance and let me know if anything was spilling while I filled the dewar attached to the SEM. He took some video of the process. The plastic funnel I used was cracking as I was pouring, which in hindsight wasn’t that great of an idea, so maybe we need to find another solution here….
The detector took over an hour to cool down, but ultimately it worked beautifully! I kicked up the energy of the electron beam to 20 keV which excited the atoms in the sample to give off characteristic X-rays. The EDX unit measured the energy spectrum of the X-rays given off, and was able to suggest possible elements that have those peaks, which I could then label. The next day Susan Young, the microscopist who used this SEM when it was at its former home, came to the space to give me some advice on the EDX and the sputter coater.
After calibrating the detector on a copper target, I then tried imaging a sample that consists of an aluminum sample stub, copper foil, and carbon tape, that has some of each of these exposed. I’ve labeled three peaks for copper, one for aluminum, one for carbon, and one for oxygen. The peak at 0 is just an artifact of the detector. Here is a movie of the X-ray peaks building as the detector collects data:
Here is the complete spectrum:
The EDX detector has the ability to determine not just what is in a sample, but where it occurs in the sample. I did this by defining energy windows, above. One for carbon, one for one of the copper peaks, and one for aluminum. Each time the EDX detects an X-ray whose energy falls within one of the bands, the EDX sends a pulse on one of several channels to the SEM. The SEM operates in X-ray mapping mode and, because it knows the beam’s position when the pulse is received, it makes a dot on a color coded map showing where that element occurs. This map is an overlay on the secondary electron image of the sample.
The aluminum peak is colored cyan, which dominates the upper left part of the sample. Magenta corresponds to the copper peak, which appears primarily on the lower left. Orange represents carbon. The detector didn’t detect that much of the carbon peak (seeing as it’s the smallest of the three), but orange dots are clearly visible on the right hand side. The surface in the middle is the edge of the copper tape, but it is almost vertical relative to the electron beam, so it doesn’t seem to be giving off many X-rays.
All in all, this is seriously cool technology.
Since the last Beer Church, Eric & co’s This Is Your Grain On Chocolate has come and (sadly) gone. We’ve got 5 different Beer Church creations hidden away in bottles, and they’re all coming out to play this Sunday. Bring them some playdates in the form of a bottle of your favorite off-the-beaten-path beer – whether your own homebrew, or from a store. We’re not picky (but we are snobs)! Small beer steins will be provided to consume from, but you’re welcome to bring your own chalice.
Once we’re done with the tasting, Eric will demonstrate how to use a Soxhlet Extractor to create flavor extracts from a fruit or herb (undecided yet) – so far, we’ve used 2 of them – in our dearly departed friend, This Is Your Grain On Chocolate.
After we taste & make some flavor, we move forward to build out fun time. Our current fermenter was built hastily to get us off the ground and we’re going to try to get started replacing it with a better designed and larger home for brews. Chillmon has a new circuit board courtesy of Ryan, and we might find the time to get it working with the new fermenter. Along the way, we’ll figure out a superior storage solution for our gear (this time, with organization!). No brew today, but we’re hoping for a productive and fun day of woodworking, tasting beers, electronics, programming, and tasty science.
When: Sun April 7, 2:00PM-5:00PM
Where: Pumping Station: One, 3519 N Elston, Chicago
Why: Because you like tasting beer & building things
What: Potluck & Beer Church’s brews beer tasting, Buildout
Extra Credit What: Demonstration of Soxhlet Extractor flavorant creation for use in beer making
Who: Anyone 21 years or older
Back in January, we got word that Philip Strong, a past member of PS:One, worked for a company that needed to get rid of a working scanning electron microscope and was considering donating it to PS:One. While we have an existing SEM in the space (a Leica S440, owned by JP, a member), this one supposedly was fully functional, had documentation, and we could get some help from the microscopist, Susan Young, who used it. Of course we were interested!
On Monday the 18th, I learn that yes, the donation was approved, but with a catch: It had to be moved on Saturday the 23rd! Read the rest of this entry →
Oh come all ye faithful! Beer Church has 3 beers in the fermenter, and some of them are just about ready to go in a keg to get all carbonated and cold and… we don’t have any taps on our bar, or a fridge with lines! This Sunday, we’ll fix that (or get started on it, anyway)! Come help us turn our bar (thanks Greg for building it) into a real bar, with taps!
We’ll start off with a quick introduction to Pumping Station: One for newbies (you don’t have to be a member to attend Beer Church), with beers in hand. Bring your favorite unusual beer to share, and we’ll all get to try something new and exciting. We’ll check out the Raspberry Pi powered computerized brewing system that we’ve got going and go over our last few successful brews. The focus for project work will be on improving our dispensing and keg system, but if we have enough people we might go nuts and brew something!
- When: 12PM Noon, Sunday 10/7/2012
- Where: 3519 N Elston, Chicago IL
- What: Potluck beer tasting, brewing discussion, and fridge/taps buildout!
- Why: Because you like beer and people who build things.