I am not sure if this is the right category to ask my question, so sorry if it is not.
Currently I am trying to create an adventure map and I want a piston to push and pull 3 blocks. Since normal blocks do not stick together I am using slimeblocks, but this causes them to pull along the wall. Now I know I can use immovable blocks to prevent this, but there are not any immovable blocks I like the looks of.
So my question is: is there any command I can use to spawn in a block that looks like another block? E.g a bedrock block that looks like stone.
I don't think so. For something like that, you can either use a mod or make a custom resource pack that simply gives bedrock stone textures (as long as you don't plan on using bedrock anywhere else in the map).
But someone more familiar with pistons can probably get to the root of the problem. Though it sounds like you could simply use more pistons...?