You could make a mould using any block that can't catch fire, and create the portal block by block first by pouring lava from a bucket into the spot you want the next obsidian block to be, then using water to turn it into Obsidian.
Make a nether portal.
No
The get to the Nether in minecraft, you need at least 10 obsidian and a flint and steel. You need to make a Nether Portal, a 4x5 portal, and set it alight with the flint and steel.
Make a nether portal.
No
get a nether portal and use netherrack
make a wall around lava and tip water in it and repeat it to make a nether portal shape
You cant go to Olympus but you can go to the nether.
In order to make it you need 4 gold blocks (36 gold ingots) Three diamonds and 6 iron ingots (nether core reactor) and 12 cobblestone.
The only portal you can make right now is a Nether portal. Same with the PC version. (without mods)
A portal to the Nether requires ten Obsidian blocks (eco version) or fourteen Obsidian blocks for the full version.
You can't. You need a nether reactor core.