Exploding TNT - (Minecraft)

I've found that when working with PLA, there needs to be a balance of good cooling. Even a slight difference of 5 degrees on the build plate or with certain filaments can make a difference in dimensional accuracy.

That's a great suggestion. I will try to put that together. This design can use various sizes of rubber bands. Longer rubber bands can be wrapped multiple times and shorter ones can make use of multiples.

Glad to help. Let me know how it works out!

so I seem to have to print it upside down, or else the inside square fuses to the rest of the model. What I can't seem to understand is, is this thing supposed to slide up and down the center shaft? I can't seem to get it to move.

Sounds like it may still be fused. The button only has a small amount of travel. The SlideBracket is the part that moves along the central cylinder and should be able to slide freely. The button should have about 1mm of travel beyond where it prints from, you may be able to free it by pressing on the cylinder and the button at the same time with a moderate amount of pressure. Once the elastic is in place the button will pop up again after exploding.

ohhhhh ok i follow ya. Yea i think i'm fusing somewhere so I'll keep working on it.

ok I've made some mods to the core, I made the 4 posts that captive the rod a little smaller so now it doesn't fuse.

I wish I could post a remix of the updates, though I think I mde them a but thin. Also, I'm elongating the button as well.

you really need a decent tight rubber band to keep a good tension, so as the little motion of the plunger makes it tip over and trigger, so i'm wondering if a slight adjustment to the shape of the arms would help that.

I'm glad you're making some progress. Print accuracy is a tricky thing sometimes as there are so many different printer models and kinds of plastic too.
I have since added a build video that shows how everything is supposed to go. They are linked in the pictures above. One thing I have noted is that the routing of the elastic/rubber band can sometimes make a bit of a difference too. Both in of strength and sensitivity.

https://www.youtube.com/watch?v=GqUz7YkEeec

Thanks for the ideas. I can add a couple of the changes you mentioned in a day or two.

just watched the video, nice!

WE HAVE LIFTOF... err. EXPLOSION! it works!

MY man, I just want to say, after working with this for a bit.... HATS OFF TO YOU for a clever design! This thing is really cool, a neat little device that live under tension! lol than k you my kid loves it!!

hello ı have problem with this figure can u help me

I'll certainly try, what's up?

Excuse me, my parents don't allow me to buy models for the printer, I'm only 12, is it possible to get this TNT from my favorite game?

I understand, your parents sound a bit like mine. What sometimes worked for me, was offering to do tasks around the home in exchange for things I really wanted.

My parents were ready to buy it, but since I live in Russia, there are problems with translation abroad. And the comment was written through a translator and inserted into the comment.😕

Sorry, I came from another . I understand that I am being impudent, but the rule of trade has not been cancelled, at least there will be experience. Maybe for the review or I saw an exploding gift made by you, there was an opportunity to other colors for this gift, and I can make a nozzle for TNT. A cube nozzle or make protruding crystals of Minecraft ore.