This is one of those things where I can think of a thousand reasons to NOT do something and only one reason to do it. In the “NOT” column would be the long commute (CA to NY), I’m not a professional programmer1 , and the job requirements are a little beyond my abilities.
That said, the reason in favor is… it would be awesome.
However, I do have some mean WordPress plugin chops [↩]
I’ve made all of the cubes solid. I think it will just work better with solid parts. I had left the four end cubes mostly hollow to:
Improve printing time
Use less plastic
Possibly make an interesting hiding place for something very small
I’ve shortened the “stem” that connects the semi-circular tab to the end cube to allow for a more snug fit.
I’ve made the semi-circular groove in the center cubes narrower, to allow for a more snug fit.
Make these cubes solid so that they slide against each other easier.
I’ve noticed that the nut and bolt I installed into either side of the center cubes were pushed sufficiently well inside that they don’t want to come out or rotate. This is a very good thing for this design! It turns out that if you rotate it too much in one direction, you can just rotate it back a few times and it will be tightened back up! It also makes for easy disassembly/reassembly – just rotate the puzzle until it comes apart and rotate it back together to reassemble.
I think there are enough interesting things on Thingiverse that a MakerBot/RepRap operator could make a little bit of money printing some Thingiverse models for a fee.
I have a rule for all of my friends. I will fix their computers for free, twice. :)
It’s a good rule and it has helped my friends and myself on many an occasion. Contrary to the impressions of those unfamiliar with the inner workings of their own computers, diagnosing and fixing a computer problem is not a matter of innate knowledge. It’s basically 50% making common sense interpretations of errors and common sense changes to settings and 50% Googling for the answer.
Given fixing computers can be tremendously time consuming, WHY would I spend my free time fixing them for free? Simple. My rule is, I’ll fix your computer twice. First time, you give me your broke down computer and I get the OS working, repair whatever it is, and give it back to you good as new(ish) and if there’s a problem with it again, you give it to me to fix again. Second time, you give me your broke down computer and I get the OS working, repair whatever it is, and I keep it.
Oh, and if you want to know why you should never help someone with their computer problems unless it is really dire, check out this Dilbert comic.
I’ve printed up this 3x2x1 Rubik’s puzzle cube, but I’m looking to improve it. The colored sides consist of little bits of nearly-square paper I colored with crayons and glued onto the cube surfaces. If you wanted to improve it you could just peel them off, sand them down a little, and apply better looking stickers. It’s not without it’s flaws, but it is functional. 1
I’d like to try a little experiment and see if anyone wants to buy this prototype off me. I don’t want to spend the time to set up an Etsy account, eBay auction, or any other of the variants out there. So, is anyone interested in buying this first draft?
If you’re interested, please leave a “bid” in the comments. I’ll ship anywhere in the U.S. for $2.00. Highest bidder at the end of seven days from now will be the proud owner of this one-of-a-kind item.
I finally found the time to print a copy of my 3x2x1 Rubik’s Cube. Having printed it, I’d make a number of improvements in the next design iteration. I would:
Make the circular slots in the center cubes smaller or the circular tabs in the four outside cubes larger.
Enlargen the holes for the nut and bolt.
Make these cubes solid so that they slide against each other easier.1
Consider replacing the entire nut/bolt requirement with a connection similar to the becco block connectors. This would make for a totally printable solution.
Print the cubes two at a time to minimize warping without a heated build platform.
It slides reasonably well and is certainly functional. However, after several center cube rotations I will tighten the center bolt.2
The four cube sections at the extremities are hollow. [↩]
The hole for the nut is tight enough that it doesn’t rotate as I turn the bolt. [↩]
I had previously fixed a toy fire truck by modeling a broken swivel and printing a new one.
Today I discovered a handle had broken off a magnetic drawing toy. The yellow handle is hollow and separate from the red plastic body. It is held in place by plastic tabs that slot into body and protrude into the handle. The plastic tabs that held the handle in place were themselves hollow – and cracked right where the handle met the body.
I measured the broken part, modeled it in Sketchup, duplicated it, exported to an STL, put through the brand new RepG, printed, opened the toy, inserted the printed parts, put it back together, and DONE. Since the printed tabs are on the inside, it is functionally perfect and cosmetically indistinguishable with an off-the-shelf model.
Without a MakerBot, it would have been either cosmetically unsightly or prohibitively expensive to repair. Win.
It’s been a long week and I’ve been very very glad of this weekend. Unfortunately, a big fat chunk of this Saturday was also devoted to work-like stuff. I didn’t get a chance to design or print much this month.
Once I get some time, I’d really like to get a MakerBot heated build platform. The only problem is they’ve been out of their SMT kit for a while now. And, without the SMT kit, I can’t assemble the HBP kit, so I won’t need the new relay kit.
This blog is as much for me as it is for anyone else. 1 When something occurs to me, I type it up and click “Publish.” However, this means I’ll go days without a single post and then have a flurry of half a dozen posts. Some of my posts languish in draft form, half-notes, jottings of ideas, etc. 2
Help me out here. What’s better – if I pace my posts – say one a day – or just have them published as they occur to me with random gaps?
As a loyal reader, what do you prefer? Come now, both of you can chime in. <crickets> Bueller?
Well, the ads for other people. I’m not allowed to click on them. [↩]
Seriously, though – how in the hell did I write more than 100 posts in February??? [↩]