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Math Balance
A simple mechanical calculator powered by gravity!
In the contest Education Tools
426
930
9
6300
updated
November 12, 2024
Makes
Comments
A fun make, and definitely a fun and education toy for children.
Managed to print the numbers in the tag, had to disable the print bed probing before printing the tags over the numbers.
Printed in PETG, poly red, Jade White, pink
Followed the instructions, but still off by 1... something the balance is ok, but most of the time is off by 1-2
Cool model but the numbers seem way overweight. I've tried a few different brands to no avail. No weights lands at zero correctly, but the 9 is landing at 13 (even without the number insert). Anyone run into this? Printing on a new K1C. (edited)
@MartinRigatoni, any thoughts on why the numbers would be so much heavier?
@docksteaderluke That's weird. Are you sure the balance arm was printed at 100% infill?
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Printed as instructions stated. All done in about 6 hours. Had to add small M2 nuts on the back to balance it properly. Other than that it works like a charm
@FilFinesse_508886 Where did you place the nuts out of curiosity?
@docksteaderluke I placed them on the ends of the balance beam. Basically right behind the point where you hang the cards.
The model is crazy good! I`d love to make it for my students.
although I don`t know how to print the number tags with inlays. When I load them into prusa slicer and slice them, the print starts at already 35 minutes. Doesn`t seem right. What is wrong, how can I change that?
@derHundenase_2213625 That does not seem right at all. I'm not really sure how to configure the filament changes for the number inlays using Prusaslicer and a single extruder.
I will soon upload a version of the number tags with protruding numbers, for a traditional filament swap. I'll let you know once I have them ready!
@MartinRigatoni that would be great! If you want, you could send it and I test it.
This is brilliant. I don't want to even think about the time you must have put into it. Can't wait to work with my grandsons (6 & 9) on this. Thank you.
@paj418_500011 Thank you for posting your make, it looks great!
It took me longer than I'd like to admit to figure out the math to calculate the position of the numbers on the scale. It is high school trigonometry, but it's been a very long time.
I hope your grandchildren like the it!
i make this file but i have this promlem with the one maybe you have asolution for this?
@konstantinos_2587317 That's a weird one. How did the gcode preview looked in the slicer?
@MartinRigatoni everthing looks normal i dont know i try but i am not so spesialist in this totaly new in 3d print
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"simple mechanical calculator"??
That's incredible. My daughter is still too young for this, but I'll certainly print this when the time comes!
The idea is brilliant. Thanks for making it!
@layer_by_layer well, the mechanism is quite simple, even though the trigonometry involved to calculate the position of the numbers on the scale is not so trivial. In any case, I'm really glad you liked the model, I'll be waiting for your make!
Smart