I'm working on my first redstone structure, so it's extremely simple. It's a secret entrance to my base, and it's just two horizontal stickypistons, one of top of the other, that extend one piece of dirt each when the button is pushed. What I'd like to have it do is the opposite though, to retract a piece of dirt each when a button is pushed. Is there a way to do that?
123023
In Minecraft I need to make a piston door that opens when a plate is stepped on, it is normally the other way around. Does anyone know how? A video would be helpful but not required.
85953
I came across a crimson altar in Terraria, and have spent 26 minutes looking this up with no results: how, in the world, do I use it? I seriously do not understand. And this has been a common theme with this game from the get-go, like the Extractinator with its bizarre place the silt into the machine like you're placing a block interface. It's occurring to me that Terraria is very unintuitive and kind of all over the place with its user interface.  The wiki says the suspicious-looking eye can be crafted with it, but despite all my frantic clicking, I can't get the thing to work. I've tried standing on it, hitting it, clicking every button on the mouse, and throwing the whole stack of lenses on top of the altar with no results.  I hope this doesn't have to do with expert/normal mode. Cause if so, well, why did it even spawn, first of all, but if so, then I wasted an hour beating a dead horse.  To say this is frustrating would be an understatement.
40209
If I rotate my button by -180 on the Y axis I can't even click on it. If for example I rotate it 180 on the Z axis everything is fine. Why does this happen and how can I fix it ?
47872
Since it is no longer possible for flowing water to deactivate a Nether portal, you can't use pistons to push blocks into the nether portal and finally you can't move the obsidian powering the portal with pistons; is it possible to deactivate the portal some other way with redstone?  I'm not too interested in detonating TNT near the portal either, ideally the method needs to be reusable and not destroy the surrounding mechanisms.   Bonus points for activating a Nether portal with redstone as well.
73677
First, I know that clicking the '+' button on the right side of the material list makes an empty material slot, and after clicking the 'New'-button it adds a new material. But isn't it the same as just only clicking the 'New'-button (without clicking the '+' button first = empty slot)?   Second, I know that clicking the '+' button at the bottom next to the 'F'-button copies this material and makes it as a new node. Activating the 'F'-button will not delete unused material after closing the file. What exactly does the '2' button do (when 'F' button activated)? Is it the same as just clicking the '+' button (at the bottom, next to 'F' button)? So what exactly does the 'F' button and '2' button do?
88485
I am creating a pillow for my couch.  But when I click on my base, it just deforms it like this:     Does somebody know how to fix it?   After ticking dyntopo it looks like that...
9319
So, I'm working on a control station that has buttons. It is a one-mesh creation, that means, I don't want to create buttons and things like that separated from the main mesh, but as you can see, I have problems. I would like to make the highlighted parts to be one with the main part around them. I've tried everything, and I have this problem on multiple creations. Any idea?  Update: I've added another example of the problem. I want them to be one face, instead of two. (2nd picture)
13619
I want people to only be able to place TNT on only Quartz Blocks and I've see this done before where you can only place blocks on certain other blocks but I'm not sure of the command used to do that.  Does anyone know?
97949
In a  horizontal surface, a block (cube) is sliding due to a sudden push. When the block slides, there is frictional force which is acting on the block.     Frictional force will have a torque around the center of mass, so why does the block not rotate/roll around (a horizontal axis through) the center of mass instead of sliding?
118432
Is it possible to create an item in Minecraft so that, when the player right's click on a certain block with it, their position (x,y,z) becomes (x,y,z) + (n0,n1,n2)? I know something like this is possible, after seeing  with command blocks, but I'm not sure as to the solution. I am running Minecraft version 1.8.7/1.8.x. Example Create a stick named YELLOW so that when the player right-clicks on yellow wool they will be teleported n units to the south. (I am trying to create a maze with 4 different wool colours that will move you to a different square on a respective maze.)
37371
I'm trying to build a teleporter. I want the player to be teleported from the first sign(left) to the right sign(right). So, when the player steps on the red wool on the left, he will automatically be teleported to the red wool on the right. I do not want to use any pressure plats.It might work with the testfor comment, but I didn't figure out, put that only works with a radius. BTW I'm in 1.10.2 bou I could probably change the version if necessary.     The testfor command block should activate the teleport command block,when the player is detected. Now, I'm not really the expert, so I know non of the commands that you would need to build this construction. Please help, I would highly appreciate it! If you need any more details, ask me!
11114
Possible Duplicate:          Layman alert...I last did physics in high school, and am just trying to understand something my son is working on.   To keep a box moving across the floor at a constant velocity I need to apply a force equal and opposite to that of the  force working on it.  If I start applying a force greater than the kinetic friction force, the box will speed up. Will it keep speeding up indefinitely, or will the kinetic friction force I need to overcome increase as the box gets faster?
77257
What's the max height of blocks for a redstone contraption to still work even I'm in the surface below?  Like if I build a pillar to the max height of blocks and build a redstone contraption there, is it still going to work even I'm on the surface below?
1816
To reproduce this problem make layout like this and then power the piston. Once the piston is extended, removing the power source will not retract it:    Since piston head block is transparent, I see no explanation for this. Also, even if it wasn't transparent, it still wouldn't power a piston. For example this doesn't power the piston:    But if I place redstone and THEN place the piston, it's powered:    It also remains powered no matter what, as long as there isn't a block update event:    I suppose this behavior can be used to make a block update detector, but in my case this sucks. I wanted such setup for automatic smooth stone generator (without any clocks):    But due to this bug, it won't work - the piston will be always extended.
90206
So I have subdivided a face on a cube 9 times and I want to pull a certain area of the face backwards into the cube to make eyes. However, when I select certain vertices and bring them back, they pull the faces surrounding them back as well so they are slanted. Is there a way to only bring the faces that I selected back, so new faces are created on the side?  Thanks in advance!
75769
I accidently pressed F11 for PC minecraft and now the screen's all messed up.  When I turn Fullscreen OFF, it minimises, but the button to maximise is not working anymore.  How do I reverse it to normal?
19135
So I have somehow turned this on and I dont know how to turn it off again, the gizmo that usually moves an object is now moving a bigger version of itself, and I dont know how to change it back