Amazing marble run magnets for your fridge!
Description
Who can build the longest track?
Will you beat your friend in a head-to-head race?
How far can your marble jump?
----- Thingiverse wants to know! -----
Instructions
You’ll need:
1. Fifteen 3/4” x 3/16” disc magnets (a standard size at your hardware store)
2. Glue
3. Marbles
To assemble:
1. Use the accompanying files to print six pieces of track and one catcher.
2. While the printer is busy, go to the hardware store for your magnets.
3. Glue the magnets into their circular slots in the tracks and catcher.
4. Head for the kitchen and set up your slope!
5. Ready...., Set... Go!
The accompanying files allow four types of build:
1. One piece of track
2. One catcher
3. Six pieces of track
4. Starter set (Six pieces of track and a catcher)
UPDATE: A Sketchup file of the Amazing Marble Run is now available so you can customize!
TIP - A few people have had difficulties printing the tracks, which are quite tall. The problem is that they tend to fall over if they aren't well adehered to the build plate. Various strategies for increasing adhesion have been floating around Thingiverse, but for me the one that works the best - by far - is to simply make sure the kapton on the build plate is immaculately clean. I scrub the plate with pure acetone and a paper towel three times before any build.
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looks like there's something wrong with the sketchup file. When i open it it is way too big. The diameter of the magnets for example is 2100 mm. Any chance to correct the scaling?
how long is it taking you guys to print this? because it says it will take 23 hours on my replicator.
Love the post. Not sure about others who've tried it, but I've been having trouble getting it to print to completion. Invariably they end up coming loose before it finishes, preventing me from getting a full track piece :(
I'm sorry you're having trouble printing the marble run. Tall builds are always tough. I've improved my success rate by doing two things: make sure the build plate and Kapton are immaculately clean for good adhesion (I scrub the Kapton with acetone and a paper towel three times before any build), and make sure the printer does not shake at all (I keep my Replicator on a built-in counter as opposed to a table). You are also welcome to make changes to the design (now posted in a Sketchup file), so it is a little shorter.
Keep us posted!
Very cool. It just so happens I recently bought 1000 3/16 inch neodymium magnets (for $50). Could you post the source files or a modified stl w 3/16 inch diameter sockets instead of 3/4?
Thingiverse needs to have upvote/downvote buttons so that this thing can be upvoted to the top!
Very cool... Why now when I have so much UNI work to do. Lol... Heating up the 3D printer now. Lol
Needs a tall battery powered additional piece that picks up balls from the bottom bucket in a little cup then lifts it to the top and dumps it out, so it can operate periodically or based on noise or button pushes. :)
License
Replicator with v5.5 firmware and Skeinforge 50/RepG 0037.
When printing the bucket bottom does not print properly. As Skeinforge is not detecting it as a bridge layer (which I've set to .5 the speed of 80mm/s) to get nice quality bridges. Instead it does normal infill at 80mm/s which breaks the filament. Am I missing something? I've wasted a ton of plastic trying to figure this out... My guess is it's a bug in Skeinforge. Anyway to make the bottom solid instead of raised?I posted the issue to the Makerbot Operators Group, no one replied. So maybe I'm just insane :)https://groups.google.com/foru...
Hi! I don't think you're crazy! This problem hasn't happened to me with this project, but it has with very similar ones (thing:33621). I think the problem may actually be with the *.stl file exported from SketchUp. Let me mess with it and get back to you...