Nether portal – Official Minecraft Wiki
A nether portal is built as a vertical, rectangular frame of obsidian (4×5 minimum, 23×23 maximum). The four corners of the frame are not required, but portals created by the game always include them, resulting in 4 free/extra obsidian.
https://minecraft.gamepedia.com/Nether_portal
Nether Portal | Minecraft Wiki | Fandom
A Nether Portal consists of a rectangular frame (4×5 [10 blocks] minimum, 23×23 [84 blocks] maximum) of obsidian. The four corner blocks of the frame are not required to activate the Portal, but Portals created by the game will always include them. Adjacent Nether Portals can share obsidian blocks. Nether Portals will not work underwater.
https://minecraft.fandom.com/wiki/Nether_Portal
Minecraft Nether portal: how to make a Nether portal in …
What are the Minecraft Nether portal dimensions? You’ll need to get your hands on 12-14 blocks of obsidian to create a Nether portal which is a rectangular shape of 4×5 minimum and 23×23 maximum.
https://www.pcgamesn.com/minecraft/nether-portal-dimensions
How to make a Nether Portal in Minecraft
In Minecraft, you need 14 obsidian to build the frame of the nether portal. The base of the nether portal should be 4 obsidian wide, and the sides of the nether portal should be 5 obsidian high. This design will use 14 blocks of obsidian. The game control to place each block of obsidian depends on the version of Minecraft:
https://www.digminecraft.com/getting_started/how_to_make_nether_portal.php
Minecraft: Where to Find Ruined Portals & What They Do
Keep in mind that Crying Obsidian cannot be used at all in a Nether Portal frame. Once you’ve replaced the Ruined Portal’s missing or non-Obsidian blocks, it should now be in working order …
https://twinfinite.net/2020/06/minecraft-ruined-portals-where-what/
Quick Answer: Can You Find Obsidian In The Nether? – Ceramics
Obsidian can be created when a Nether portal is generated in the Nether or the Overworld. Obsidian is formed when flowing water hits a lava source block, and can be found naturally where water from a spring or lake has flowed over a nearby lava pool.
Nether Portal – Minecraft 101
A portal requires 10 or 14 blocks of obsidian to build. Portals generated by the game have filled-in corners, but lazy miners often leave them out to save on materials. You will need a diamond pickaxe to mine obsidian. Once the portal is built, it needs to be set on fire with a Flint and Steel to activate it.
http://www.minecraft101.net/t/nether-portal.html
How to Build a Nether Portal in Minecraft | Minecraft
Step 1: Farm obsidian To build a Nether Portal, the first thing you will need to do is farm 14 pieces of obsidian. Obsidian is created when flowing water is added to lava.
https://www.gameskinny.com/iisaj/how-to-build-a-nether-portal-in-minecraft
How to Make a Nether Portal in Minecraft (with Pictures …
Use the axe to mine 10 blocks of obsidian, then use the blocks to construct the portal frame. Light the portal with flint and steel until it glows orange, then stand in the center. In a few seconds, you'll be in the Nether! If you want to learn how to make the portal using a mold, keep reading!
https://www.wikihow.com/Make-a-Nether-Portal-in-Minecraft
Ruined Portal – Official Minecraft Wiki
A large incomplete portal, with the most gold blocks, separate obsidian. 324 Netherrack 51 Stone Bricks 40 Stone Brick Slab 33 Lava 25 Obsidian 22 Iron Bars 6 Block of Gold 6 Chiseled Stone Bricks 6 Stone Brick Stairs 1 Chest ruined_portal/portal_1: A small incomplete portal, with stone slabs and no lava. 55 Netherrack 11 Obsidian 10 Stone Slab 9 Stone Bricks
https://minecraft.gamepedia.com/Ruined_Portal