Hello Coffee my old friend

In an effort to get out the door for work on time yesterday and then to a meeting a little later I skipped out on getting coffee, which left me caffeine deficient until about 30 minutes ago.

Why this sometimes seems like a good idea is totally beyond me.  I’m addicted and I should really just come to terms with that.  I’m just a nicer, better person when properly caffeinated. 1 2 3

At the local coffee spot I stood in a line of zero people while waiting my turn, still with my sunglasses on from being exposed to the harsh bright light of a Bay Area sunny morning.  The barrista beckoned me forward and I handed him my empty travel mug and credit card.  “A lot of coffee please.”  He filled the mug, charged my card, and asked if I needed the receipt, which I declined.  At least, that’s how it was supposed to go down.

Small coffee?

Huh?  What?  Um, n…

Well, I’ll fill it up, and charge you for a small coffee.

Oh, okay… thank you.

Do you want me to rinse it out?

Uh, wha… no…

Room for cream?

Um, yeah, thanks.

Okay, great!  Credit card?  Do you want the receipt?

No, thanks.

The above is actually a very normal transaction, but in my drug dependent state it was terribly confusing and disorienting.  I felt like a kid left a train station as an engineer asks me questions about where my mommy and daddy were as I try to answer with my mind trying to work out the discrepancies between my current dilemma and the directive to not speak to strangers.45

  1. And a grumpier, surlier person when under-caffeinated. [↩]
  2. And a frenzied frantic inspired person when over-caffeinated. [↩]
  3. It’s a fine line. [↩]
  4. Mom, dad, if you read this…   please come back!  I promise to eat my veggies.  I miss you! [↩]
  5. The train station wifi is terrible! [↩]

ProfileMaker: More than 209 profiles and 58 people served!

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Always wanted to try printing at 0.25mm per layer or with 1.75mm filament or in PLA?  Your ‘bot can do it.

  1. Powered by SCIENCE! [↩]

Son, I am disappoint

Tron: Legacy.

Really?  I must be missing something.  They really could have had a decent movie without a bunch of “meaning of life” BS.  Why couldn’t it just have been a movie about a kid rescuing his dad?  The mystical junk just got in the way and made it confusing.  The effects were pretty good and there were only a few uncanny valley moments, but’s not going to save a movie.

Pick me! Pick me!

Okay, I’ve gotten the clearance from Pattywac to join in the United We Stand team design challenge.  Although I voluntarily take myself out of the running from every challenge, I love participating.  They’re just too much damn fun.  :)

I never participate in the judging on these things – but it would look a little odd to have me be both someone who blogs about something and a guy who is the subject of the blog post.  Blogging here at MakerBlock.com, I happily post about anything that comes to mind, even if it is ridiculously self-indulgent.  However, I really don’t want the posts at MakerBot to be about me – I want them to be about the awesome stuff people are doing in the DIY 3D printing community.

The potentially ethical problem I faced with this most recent challenge is that as a team design challenge, I wouldn’t want to disqualify an entire team of people just because I was on it. 1  So, my proposal to MakerBot and Pattywac was that as part of any team, I would agree to forgo any winnings of any kind. 2  This was acceptable to both.

So, are you interested in collaborating on this design challenge?  I’d be especially interested in getting collaborative help on any of my existing projects, going from my highest interest3 to lower interest4 :

  1. Clockwork spider5
  2. Open source disc shooter
  3. A printable clock that actually keeps time
  4. A sonic screwdriver
  5. A dalek that can rotate it’s head, roll, and move it’s gun, eyestalk, and plunger6
  6. A better Voltron
  7. A puzzle box
  1. And, really, having me on your team is hindrance enough. [↩]
  2. I just want to feel included! [↩]
  3. #1 [↩]
  4. #7 [↩]
  5. I’ve already had input and help from Dna on this [↩]
  6. Mad props to innovationbylayers for the existing dalek on Thingiverse [↩]

Confluence

With my MK6 disassembled1 and work projects stacking up, I tend to become more prolific in writing and designing. 2

Whenever my ‘bot is in need of repair, my mind goes back to all of the projects and things I keep meaning to print…  but never find the time for.  I also think back to design problems I was having… and sometimes come up with solutions!

Take, for instance, the puzzle box from The Mummy.  I’ve been meaning to get back to this for more than six months.  Well, an idea for a way to make it spring open just occurred to me.  I could put another octagon shaped box inside of the puzzle box and a flatish spring underneath it, squished between the two boxes.  If the top of the box is released, the spring would force the inner box up – and against the lid components and the entire lid open.  It would also potentially work well with little spring loaded pins just under each of the lid pieces.  I’m thinking something like a piece of filament forced upwards by the spring from a retractable ball point pen.  Or, if your spring was good enough, the spring could be under just one of the lid pieces – with the other lid pieces laying on top of it.  As that one pieces is forced up, it could force the others out.

Without the benefit of my printer running, I’m also putting a few extra brain cells3 on my clockwork spider project.  I was inspired by several things recently.  First is the video of how a mechanical clock works I had posted earlier.  As you’ll recall from Skimbal’s Rubber Band Gear Mechanism/Engine, a wound spring engine will want to expend all of its energy all at once.

That video describing the inner workings of a clock demonstrates a little regular that only lets it unwind a little bit at a time, so it can expend its energy over a longer time period.  Secondly was Erik’s pick-n-place tape feeder.  This design uses an interesting spring/gear/ratchet wheel.  Skip to 1:25 for a demonstration of the mechanism in question.

Now, in the instance of Erik’s device, it is the ratchet that moves back and forth – rather than the wheel turning at a constant rate.  However, this gave me an idea.  It should be feasible to create a similar spring/ratchet combination to prevent a wound device from expelling it’s energy at once.  Last, but by no means least, is Dna’s rubber band ratchet engine designed to power a clockwork spider.

In pondering my attempt at an open source disc launcher, I’ve been trying to think of the best way to pull back the spring.  If the firing pin/slider is going to be powered by a rubber band, it’s going to need to be a decently sturdy mechanism.  I keep thinking back to a rack and pinion set up.  There could be a notch in the bottom of the firing pin/slider, a peg in the flat side of a rack, and a small gear run off of a big gear, with the trigger on the big gear.

What else?  Um, I think the tank by mraiser could make a good platform for a larger clockwork spider.  Also, I would like to see a version of the tank that’s run off of clockwork/gears/regulators/rubber band/springs.

  1. More on this later [↩]
  2. I didn’t say better, mind. [↩]
  3. Both of them! [↩]