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Neal Grieb
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Neal Grieb

General discussion  - 
 
I've been having a slight issue with my Da Vinci 1.0 printer. I had just replaced the nozzle a few weeks back, and just recently started printing a larger number of parts in succession again. Everything was doing unbelievably well until this week. These are printed using the same layer thickness...see the difference? Anyone know where the problem may lie?

The only thing I can think of is a change in humidity levels... 
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Evan Nguyen's profile photoNathan Walkner's profile photoNeal Grieb's profile photo
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Solved the problem by printing something less round. The real culprit was a scratchy linear bearing on the x axis. Sounded good one way...but on the way back...grrrr.

Couldn't see or hear it while doing the tight circles used in the chess pieces.
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Neal Grieb

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Was trying to do some gear design and found this:

http://geargenerator.com/#400,400,400,6,0,0,1380.5999999999738,2,1,10,0.3125,32,20,-90,0,0,24,0.75,32,20,-90,0,0,2,806

Hope this helps others as well. I find CAD gear design to be a bit tedious and painful. Amazing!
Gear Generator is a tool for creating involute spur gears and download them in SVG format. In addition it let you compose full gear layouts with connetcted gears to design multiple gears system with control of the input/output ratio and rotation speed. Gears can be animated with various speed to demonstrate working mechanism
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Neal Grieb

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Unfortunately this incredibly selfish and screwed up claim may have a scientific basis: http://www.ted.com/talks/william_li

I only hope she didn't pull focus and attention from these actual doctors who are trying hard to find different solutions to a shockingly misunderstood illness.

Neal Grieb

General discussion  - 
 
I'm not extremely familiar with the SLA process, other than the fact that photo resin is hit with a UV laser, but have been thinking about the possibility of a rotary style printer. Does anyone know if it has been done before? I'm thinking a slotted wheel with the head/laser much like a CD player...
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Neal Grieb's profile photoWhosa whatsis's profile photoJames Kao's profile photo
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Oxygen inhibition is all the rage from the Carbon3D videos, but it's not necessary to get too carried away with that tech. There are plenty of ways to SLA print without it.
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Neal Grieb

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Itching for a test flight.

I know that this has been done before, but was wondering if anyone in the community has tried and succeeded. I'm using a Da Vinci 1.0 ( so, so far this has been complicated). 
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I've tried cold acetone vapor smoothing, but don't have the equipment to try the more dangerous hot technique. It did smooth the part quite a bit and gave me a nice sheen, but also turned out slightly hilly where there were thinner areas of material. I'm thinking if I can't remove the small ridges they would simply result in a more gradual bumpy surface. Also, the last time I attempted the cold method it didn't work for some reason...not sure why.
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Neal Grieb

Show-n-tell  - 
 
DaVinci 1.0 printing magic. I'm totally shocked this worked out. The new print head assembly seems to do much better. Any one else have the newer generation head? What are your thoughts?
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True, but unfortunately the R&D is happened after they sold thousands of barely tested products.

Just be careful to check the connector to the heater element if you still have the old black connector. I think they noticed that the vapor from the water based glue stick was getting into it and corroding the pins...hence the new full jacket. My connector was heating up instead of transmitting the voltage and current to the printer head, which could have resulted in a nice meltdown/fire.
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Neal Grieb

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Does anyone know if there had been any initiative to build smart slicers tuned for things like thermal stresses, shortest paths, and least amount of support material? I'd love to try to create/help with some slicer software.
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 I think it is very possible to do what you are saying, and it would be very fast to change the layer thickness using surface projection on the analytical geometry. I'll get crackin' on it. This can go on my projects list right behind everything else...so like 2 years from now ;-)
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Neal Grieb

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Sony is so behind the game. That price is insane. Check out the Cowon players if you want great audio and long battery life. The X9 has 110 hr music listening life.

Neal Grieb

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Found a great new band: The Interbeing. A Danish mixture of Mnemic and Sybreed.
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How do they keep getting better?  \m/ (oo) \m/
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Have him in circles
25 people
Mark Rodarte's profile photo
Dekani Fisher's profile photo
3Dprintingforbeginners.com's profile photo
3D Web Easy's profile photo
Zac Mills's profile photo
Seth Dillard's profile photo
Ryan Cole's profile photo
John Mousel's profile photo
Machinery East's profile photo
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Mechanical Engineer
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Mechanical Engineering (Design, Drafting, Fluid Dynamics, Programming, etc.), Art (Traditional & Digital)
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  • Mechanical Engineer, 2011 - present
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Neal Grieb's +1's are the things they like, agree with, or want to recommend.
Piano
market.android.com

Piano is a Virtual Piano on your Android device, featuring Piano, Xylophone and Synthesizer sounds. Practice songs, make music or just have

Notepad
market.android.com

Notepad is a simple, easy-to-use note-taking app. It has selectable text size, searching, sorting, and the ability to send the note.