VEND - the totally printed candy dispenser
Description
VEND is a totally 3D Printed candy dispenser that accepts quarters and rejects other coins.
VIDEO: youtu.be/IWuvwcfnGFE
Not only that, it has been designed so that once the loops in the back are secured with a padlock or whatever, it can't come apart (without damage). The back hatch secures the money and access to the coin mechanism's locking pins. The collar around the jar keeps the jar from being removed.
The hole on the top will take a preserving lid ring for a standard "medium" Mason jar. That lets you thread the jar to the top, and the collar will secure it in place. Or you can go totally legit and print the provided jar file. (not .JAR file).
Also, this version is EXTREMELY generous. For a quarter, it will give you about a dollar's worth of M&Ms, Skittles, Mike and/or Ikes, Chiclets or glass marbles.
I don't recommend the marbles.
I'll provide a few different drums to adjust the generosity of the machine soon.
UPDATE: I've uploaded all the STL files. My prototype is still printing so I'll hold off on the source files until a legitimate test.
Stay tuned!
Instructions
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What to do to make it accept other coins (I gues 0.50eur or 1eur could be sensible for giveaways in the hackerspace)?
Just adapt the diameter and thickness?
.o0(I have to find out what size a "Mason jar" is.)
is it possible for you to make a lock that takes 50 cents instead of the original 25
This was a lot of fun to print and put together. Many thanks. I had a couple of minor issues printing in PLA at .10: the pawl was slightly too large for the opening, I modified this to fit, the drum spacer would not fit over the square at the base of the drum bolt, so I modified this slightly as well (but not certain that I'm using this piece as designed), and the hatch seems to swing in the wrong direction (also possible that I'm not seeing how to attach it properly).
wonder if it would work with 50 Euro cent. They are roughly the same size as quaters (24,25 mm in diameter and 2,38 mm thick)...
Finally started printing the main body on Monday afternoon. I set the slicer to a detailed config without thinking. Oooops. It's still printing and it's Wednesday morning.
Just finished the main body component at .10 resolution. Slicing took about 8 hrs and 62hrs 2 minute build. A bit frightening as an unattended build given a few issues I've encountered with filament spool lock-ups, but everything went smoothly on the Rep2 And it's beautiful! Great design, thanks for this!
Thanks for this great design. I have been chipping away at printing it here and there, and just today I noticed that my drum and drum spacer do not mate.
Has anyone else experienced this?
Erik, do you think you can post the CAD file for the drum & drum spacer? once I finish printing, I'd like to make a part that fits in the drum and locks to the spacer to make it less generous. make be cut down the drum volume by about 1/2 to 2/3.
Call me stingy...
My print just started on this, This will be, by far the largest item I have attempted. I am using a Replicator 2..It looks like my printer is going to be busy for the next couple days, I cant wait for completion.......
Print faster! Printer Faster!.. Nope, not helping..
can you post original files for modifications and ability to customize please
Can you upload editable files? I am australian, I work with $1 coins...
see picture for the one i made with m&m's inside. works good there are a few upgrades needed though, the flap breaks off after a few times of opening and closing. the locking mechinism also needs some sort of overhaul it doesnt lock well. but all in all this was a awesome build good work on the design
I'm going PLA gold for the knob and face plate, and PLA red for the body. Just sliced the first pile of parts. (knob, faceplate and all the tiny bits.) This is going to take a few days to print.
Beautiful model.
I printed the body in pink for my little girl, and just uploaded a photo. Biggest thing I have ever printed! now on to the other parts!
I'm printing the body right now on my Replicator 2. I'm at 50% done after 9 and a half hours of printing. A little curling in the bottoms corners but looks great so far!
This is wicked cool. I'd love a body without feet. This is bigger than the Reprap/Ultimaker bed so I just lopped them off to print separately. I suppose this fits a Replicator bed? What IS the native file?
one small note, can you include the VEND dimensions in the description? I'm about to download the STL's just to see if my Mendel90 can handle it :)
Awesome!!! is there anyway that the coin type could be easily change as I live in Australia and don’t have 25c coins?
I'd be interested in a replacement coin mechanism to replace the broken ones in my regular candy machines.
I'm looking for something to replace a mechanism similar to this one:
This thing is so sweet, it would be so cool also if the number of coins it takes could be configured, but to tell you the truth, this thing is just awesome as a concept, let alone a physical printable thing. What I think would be cool would be to use this to sell small 3D printed objects, such as whistles or mini gear cubes and such, just as a way to get people's attention and show people the amazingness of what printers and designers are now capable of.
Sorry to ask, but are there any instructions for putting this together? I'm printing mine ATM and I just want to make sure I assemble it correctly :P
You should patent this! Thanks for the models!
You do great work!
I feel patents work when it is the responsible thing to do. Responsibility to family, employees, even society (in certain cases) but for this, nah. Thanks though! I enjoy people printing my models from here and enjoying them most of all!
I think this world has enough patents as it is, no need to encourage more.
Very cool! I'm more impressed with the ingenuity of the maker community every day.
The only issue I can see (and this comes from my watching your Youtube video of the coin rejection mechanism in action) is that if you stick the wrong coin in it would be impossible to remove. It looks like it drops below the front slot far enough that it can't be reached from the front, and when the coin mechanism is inserted into the dispenser body there would be no way to reach the coin from the back as you're doing in the video. Am I seeing that right?
A quarter revolution of the ratchet on the drum has no teeth so if you somehow disengaged both the lock pins and rotated the drum, it would turn smoothly until it hits the internal stop hole. Then you can turn it backwards and retrieve the coin. The ratcheting begins after the first quarter turn after the three lock holes are passed.
License
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I'm almost finished with mine! However, the flap doesn't seem to fit the design. Has anyone figured out a different design for the flap that works? The current design doesn't move properly and the flange that sticks up breaks off.