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@therimjob
Concrete iPhone Docking Station by Zeitgeist Factory
Dimensions: 6.5” x 3”
The Zeitgeist Factory iPhone Dock is handcrafted from our proprietary blend of cement and recycled stone dust which is a by product of the countertop industry. Each dock is designed to stand vertically or horizontally. The removable concrete peg fits snugly into place via two silicone o-rings.
A few renders for the fans out there, looks sweet with white sides. but obviously we cant afford that. have sorted out the cutting files on partworks and will be in early tomorrow to cut out.
And now I'm designing the gears properly. Identical teeth. Using the lasercut bed size as a constraint for design. (these are unfinished..but trying to get them done before cutting time tomorrow morning)
Ok....so I'm up too late...but I'm trying to flesh out my idea so I (and you guys) can understand it. Keep in mind this is just a sketch model. dimensions haven't really been taken into account..but basic intended proportions are used.
So, main principle, high torque motors are slow, and to make a shaker table effective it needs to be fast. Therefore the bigger the driving gear, and smaller the following gear, the faster the following one will be (causing effective shaking/vibration).
..So i got the idea to use the inside of a bigger gear (blue), running off the motor underneath.
The (grey) gear is the crank shaker one. The (green) one drives the Geneva gear, and the (purple) drives the mixer. (..I'd need help to figure out how this would connect).
As you can see the green is not connected to the blue, this is an idea I had, which means only the geneva gear works or the table shakes at a single time. A lever or something would slide the bed to connect either one (and the lateral shaking of the bed would be small to not interrupt this).
As usual, thoughts/improvements/blahblah. Please.
obviously the structure/support/rails etc. haven't been designed so much here. I'm just focusing on how the gears would interact first..as we have limited lasercutting time and these are the main things we need to cut but probably can't manually.
Here's our silicone mould - first part of the 2-part mould. Should be cured by tomorrow morning. Made with a 3D-printed master, filled and primed to achieve a desired surface.
Auto/Manual Process????
Just raising the question, are we sticking with measured scoops for transitioning between each process (storage-mixing-moulds)? Or are we going to try a shoot/funnel thingy?
I vote for scoops (easier, quicker?, and our other automatic processes will already be sick)
Baaaaasic sketches of my first impression of how shaking bed would work. Nina and I discussed today, and a piston-like system could work quite well. The design shown is built in with the staggered 'clock' gear and can just slide into the bottom part of our entire machine.
Thoughts? Improvements?
We're going to make the most of lasercutter time tomorrow so I'm drawing up some gears and complicated bits to cut tomorrow. The rest we can probably construct by hand/tablesaw/bandsaw...
the basics of our shaker bed idea. Will have basic schematics posted up tonight and hopefully illustrator files ready for laser cutting tomorrow morning.
...watch mould is curing as i write this.
Concrete strength test in ballon
Paul,
I'm Buster, a third year student at Massey industrial design.
I'm currently working on a group machine design paper, and my groups task is to create a machine that reaction injection molds concrete watch faces.
The biggest problem we're currently having is trying to get a cement/sand mixture into a hole around 10mm diameter. We have tried using vibration, forcing it in a jig similar to a syringe, and have tried a dumbed down version of a feed screw.
I was emailing you on the off chance that you either a. have a feed screw that could be appropriate, around 10mm diameter (can go up to max 25mm), or if you have any suggestions as to how this may be possible? Thanks for any advice in advance,
Regards,
Buster Caldwell
0223825639
Testing cement syringe. Worked somewhat.. funnel end needs tweaking however, as we get a bit of grit stuck in the end.
New watch design based on discussion yesterday.
- slightly thicker rim
- centred face (44mm diameter total)
- lens depth set to 2mm
- one step face design
...Will rapid prototype asap today.
This looks dope sam! Sick
- first two part mold
We had problems with vibrating the concrete into the mold, sealing the mold, air bubbles within the mold, and the concrete didn't set properly.
Shaker Table
And regarding the shaking system, the one we looked at below worries me that it'll be too strong for our small products (and end up destroying them). I'm heading to the recycling store today to look for old speakers we can pull apart and just see what that option will look like.
The motor used in the video is massive, probably a 12V or even a 240V, we can use a 5V motor with a small offset weight - the more the weight is offset the more the motor vibrates. We could even make up a small adjustable rig to get the perfect amount of vibration. Today when pouring the concrete into the mould, we needed to bash the mould hardout to get the concrete to flow down in. I think if we go with the speaker idea we run the risk of having to have the machine going wayyy to loud in order to vibrate the mold enough.
The mold is currently setting - we will know tomorrow what it looks like! We had a slight problem with water seeping out the edges of the mold as we were vibrating it on the electric sander, but that shouldn't be too much of an issue, it's normal for water to come to the surface when you shake concrete.
Barney also got the concrete mixer working sweet today, so we're gunna do a concrete mix in there on monday to test that!
Also, when we moulded the silicone, a single air bubble was trapped under each of the ray thingys coming out from the number, so that is something that we need to work on.
Here's a slideshow of the intended moulding process.
1- empty bottom part
2- metal reinforcement inserted
3- top part attached and cement poured in
4- splitting off the mould after curing
5- product removed from mould
The alteration to the bar shape posed some issues around mould design and placement of the seam line.
Here's my proposed mould design. In the elevation views I've selected each part separately to help you identify them:
1- bottom part
2- top part
3- bar insert
4- cement cavity
...The injection hole and stamp have not been considered yet in this design but can easily be included.
Yesterday we discussed another bend in the reinforcing metal bar..so as to achieve a more ergonomic fit on the wrist. Here's basically what it would look like.
It still fits in the cement component, and a simple rig could bend each bar we make uniformly.
