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Whosa whatsis
Works at Nonscriptum LLC
Attends University of Autodidacticism
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Whosa whatsis

News  - 
Answers to the questions I had going into the Ultimaker 3 launch event (plus a few surprises):

The nozzle lift does not require an extra motor. The left nozzle is fixed, and the right nozzle drops below it or lifts above it using a switch on the side of the effector, and there's a piece of plastic on the side that the it runs the switch into to toggle it (judging by the force needed to switch it by hand, it's probably close to the stall torque on the Y axis).

The OLED display does appear to have been replaced with an LCD, for some reason.

The construction is almost identical to the UM2 aside from the effector. It looked like it might have been built out of different materials because of the lack of black dibond edges, but it's the same material with a white core. They did, however, remove the indentations from the top that allow the machines to be stacked.

The Matterhackers guys said that they're still using the same old ultimaker controller boards (still no 32-bit), but have added a single-board computer (Raspberry Pi equivalent) running linux to handle the networking, flash drive, and camera. Camera images are retrieved by Cura using an HTTP request, so it will be easy to set up something else to monitor them.

Nozzle height is calibrated with a capacitive system (most likely measuring the movement of the nozzle/heater block when the printcore spring compresses).

Everything but the print cores was a bit underwhelming, and I would rather have seen those as part of the UM2+ upgrade (probably the only reason this didn't happen was because of the added wires needed to connect to the new components).

Between this and the proliferation of multi-input-single-output bowden systems, I think 2017 will be the year that desktop multi-extrusion really catches on.
Whosa whatsis's profile photoShai Schechter's profile photoDaid Braam's profile photo
Right now this is the case indeed. I think it's one of the main points of criticism from the last round of beta testing on the hardware side. I think the cores are going to cost around $100. (but don't quote me on this one, I could be wrong)

On one hand, it's a lot quicker to change a printcore then a nozzle. But it is also more expensive in the initial buy. I've heard some hallway talk about maybe making a core with screw-able nozzles like in the UM2+. But those are just random ideas, nothing has been decided on that area yet.

The nozzles are part of the heater block, which you can unscrew with the proper instructions. However, if you do it improper you will damage or break part of the hotend. So that's not useful if you want to swap often. Note that the UM2 (not the UM2+) has the same issue.
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Whosa whatsis

Resources  - 
Other than the Paizo forums, does anyone have a good source to find PBP (play-by-post) games to join? I'm looking for a game that I can play a little every day, rather than fighting with a group to schedule a time.

BTW, I'd rather it not be a PFS thing, because that can tie up a character for a long time. Also looking for something RP-focused.
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We now have up the video of +Whosa whatsis  and my  Hackaday Prize entry. The project is to find people who like making models (or who have a student or community hackerspace looking for a project) to make models that have been requested by teachers of the visually impaired. Many of these teachers have 3D printers, but don't have the time and/or expertise to create the models they need. Project video:

Project site:
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ust got my copy of our new book (with +Lyn Hoge and +Whosa whatsis), just in time for NY Makerfaire! We will be at the Apress booth at 11 AM both Saturday and Sunday if you want to come by (in the Maker Pavilion, Area 3, middle of the tent somewhere.)

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More details later, but I was reminded I hadn't posted these. I've been experimenting with PETG and printing completely solid.
Ashley Webster's profile photoBen Van Den Broeck's profile photoWhosa whatsis's profile photo
I adjusted it live with M221 to calibrate, then wrote the multiplier that worked into the slicing profile. I adjusted a little at a time, so it wasn't really visible in the sides. I also stopped the prints and started over to check the multiplier printing from zero a couple of times, so I don't have one print that shows the effects of different extrusion multipliers. The only real way to tell if it's working is to look down through the print, so air gaps in the early layers will make it hard to tell if you have them in the upper ones.

I've got some other pieces that I've sanded and polished to a mirror finish. I'm gonna try it on some calibration cubes I printed this way to get rid of the surface details and see just how clear they are inside.
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Check out my entry with +Whosa whatsis   into the ‪#‎2016HackadayPrize‬ - we are going in under their Assistive Technology ‪#‎a11y‬ category, which officially opens for entries Monday. We have started building out now so that we can get as many comments and collaborators as possible. We think there are two communities that need to meet each other:
1. Mainstream schools who have just gotten 3D printers often are wondering what do to with them.
2. Teachers of the visually impaired often have access to a 3D printer, but rarely have time to design their own models.
So we are developing a set of guidelines, instructions for readable Braille, and open-source mdoels that follow the guidelines. Next up we are figuring out how have some sort of minimalist open source sharing exchange so that groups 1 and 2 can find each other. The development period (during which community participation and comments are encouraged!) runs through October 3. Please check us out, comment, and give us a Hackaday Skull if you are a site member!
Visually impaired students have difficulties learning many subjects. 3D prints offer an unprecedented asset for their teachers, and 3D printers are becoming available for these teachers. But they need help creating models that aren't just pretty, and are tied to curriculum. [Whosawhastis] and I have been volunteer mentors to various groups working on figuring out the best ways to use 3D printing for the visually impaired. Our goal with this pro...
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If the Republicans nominate Donald Trump, they have to change their name to the Nationalistic Americans' Zealously Ignorant party.
Camerin hahn's profile photoJeremie Francois's profile photoEric Duprey's profile photoWhosa whatsis's profile photo
+Jeremie Francois Well, if that's the criterion, I don't think we can even include the word "American."
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Excited to hear that +Whosa whatsis and my  #HackadayPrize2016 project has been selected in the Assistive Technology round. Now our project moves on to final round of judging. The project is about creating a community to create 3d printable designs to teachers of the visually impaired. Please take a look if you want to help! (project link: Thanks to all who helped already!
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+Les Hall​, did you know about this?
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Whosa whatsis

General discussion  - 
I saw some pretty implausible things being show in the 3D printer village this year.

The first one I saw was a 3D metal printer made out of a MIG welding rig and a milling head on a 3-axis cartesian bot. It was enclosed in box that was supposed to get filled with an argon atmosphere, but didn't even have weather stipping to keep it from flowing out (and air flowing in). Worse, it had big window with nothing but a clear plastic sheet. This machine had obviously never been turned on, or someone would have gone blind. When I pointed this out, the builder said that, yeah, we should probably replace it with something tinted. He then said that he wanted it clear so that you could watch the milling (which was supposed to happen each layer), then realized that if he tinted the window, he would only have to turn on the RGB LED strip, apparently not understanding the difference in brightness between indirect light from low-power LEDs and a welding arc.

The second was a printer from (which claims "Print thousands of different materials and colors with a single print", despite only having 3 inputs) that was supposedly jetting resin like an Objet. This printer supposedly had multiple materials (including a conductive material) fed from cardboard boxes with nozzles sticking down. The guy running the booth swore up and down when challenged that all of the prints he was showing (most of which looked suspiciously similar to Objet prints I've seen in the past) had been printed on that machine (which, unsurprisingly, was not running). One of the pieces was even chipped, so I could see that it was definitely made of resin. One of the prints, though, which he repeatedly confirmed was an un-postprocessed print from the same printer, was clearly an FDM print that had been acetoned to within an inch of its life. This was the common treefrog print in two colors, which I knew very well would not look like what he was showing if printed the way he claimed to have done it. The print had also broken in places, revealing FDM infill (something that I'm fairly confident is impossible with resin-jetting), and there were a few other classic FDM artifacts that were. I pointed out the infill, and he doubled-down by claiming that it (including the top-surface bridging over infill that was slightly visible through the translucent filament) could be done with his process.
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+Stephanie S he said don't drop it because he didn't want it it was apparently the only one.

+Whosa whatsis and yes...aluminum. Even said directly to me that it was aluminum.
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Ultimaker now has a Cura beta that supports other machines. Hope it's not the unusably-buggy mess the original (non-beta) version of Cura 2 was, if only to justify the fact that they replaced the link to the old (working) version of Cura on their download page with it.
If you want to be on the cutting edge of slicing software, now is the time to try out the newest Cura 2.3 beta!
We are always working with our customers and community contributors to bring you the best in 3D printing hardware and software. And today, we’re excited to present you the new Cura version....
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+James Newton We re-wrote the whole frontend (as the old code was a mess), which this change we changed how machines where handled, so we initially only had Ultimaker machines in the first version, as those where the machines we had access to.
This list is now growing as more and more machine definitions are contributed.

The old (legacy) Cura had support for a lot of machines. So this made some people confused/angry.
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Nice story today on how  +Whosa whatsis and I are trying to create #scientificmakers. (Overstates our role a bit in the fight against invasive beetles, which is described a bit more accurately in our project, but it's good to get people talking about what is possible.)
Researchers in growing numbers are starting to enlist do-it-yourself 3-D printers, cheap electronics, sensors and more to advance their work
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Jeremie Francois's profile photo
Interestingly I started to present myself in the last years as a "professional maker", and I am often surprised how positive the reaction is :) The bottom-up way is often more efficient than the usual, bulky, slow and expensive "industrial" way. Clients understand it very well when you present it in a serious way and with a good portfolio. They understand also the benefits of subcontracting for their own research and development (from startups up to public institutes!). Interesting times :)
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Whosa whatsis

Discussion  - 
I haven't tried Octoprint in a while (I'm so used to printing from an auto0.g file), but it seems like it's time to try it again. I see there's now a touchscreen interface and a couple of android apps. One thing I don't see that would be nice is a good way to run it on an android device (using USB host, which is now standard, and I'm talking about a phone/tablet, not one of those sticks that can run debian). I found this post:, but it's pretty old, and the method is complicated. Anyone know of any more recent developments in this area?
Whosa whatsis's profile photoLiam Jackson's profile photo
+Whosa whatsis ah I see! Yeah those things should really break out the un-used GPIO!

I did see this which may work with some tinkering seems like they have pyserial working!topic/python-android/VlcNlF6R4lE
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3D printing and maker technology consultant
  • Nonscriptum LLC
    2015 - present
  • Deezmaker
    2012 - 2015
Basic Information
Other names
Rich Cameron
Polymathic autodidact
On a good day, I'm an iconoclastic, autodidactic polymath. The rest of the time I'm just a cynical, dilettantish tinkerer.

Also, I make stuff.
Bragging rights
Designer of Reprap Wallace, the Deezmaker Bukito, and the original version of the spring/lever extruder mechanism that everyone's using these days.
  • University of Autodidacticism
  • Internet School of All Human Knowledge
Whosa whatsis's +1's are the things they like, agree with, or want to recommend.
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