Hammer and Modding

General discussion and help forum for all things Portal 2 Hammer mapping, modeling and modding. Post screen shots of your upcoming Portal 2 maps or ask for help about mapping for Portal 2, but be sure to read the useful stickies!

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Forum Rules and Important Info - Read Before Posting!
by msleeper · Jan 19, 2026
2 Replies · 214 Views
Last post by msleeper
Jan 19, 2026
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Hammer Sticky Reference Thread
by msleeper · Feb 02, 2026
0 Replies · 67 Views
No replies
Topics
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The ThinkingWithPortals Map Showcasing Thread
by WinstonSmith · Jun 27, 2011
2,565 Replies · 641,679 Views
Last post by vrad.exe
Nov 21, 2025
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Voices Cut Off Early in Portal 2 Dubbing
by MateuszWis93 · Jul 27, 2024
1 Replies · 1,975 Views
Last post by nata17niel
Jul 16, 2025
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Edit an old map without p2c file.
by Jack Schitt · May 02, 2025
0 Replies · 1,954 Views
No replies
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Hammer compile error : "info_player_start leaked"
by Lulu · May 02, 2024
1 Replies · 1,587 Views
Last post by lexiosity
Dec 10, 2024
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Help with teamSpen210 addons.
by PortalBit · Nov 11, 2024
0 Replies · 1,074 Views
No replies
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How to make voice lines?
by PortalBit · Nov 10, 2024
0 Replies · 939 Views
No replies
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Tutorial for Observation Rooms?
by AutoDMC · Nov 12, 2007
27 Replies · 11,823 Views
Last post by Zahra
Oct 24, 2024
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Hammer isnt compling
by styxwastaken · May 27, 2024
0 Replies · 1,043 Views
No replies
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[SOLVED] Retexturing cores for custom story mod
by Orinji Neko · Feb 14, 2019
2 Replies · 2,535 Views
Last post by SpeedierGuide98
Jan 11, 2024
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Editing .MDL files?
by Flo2912 · Sep 22, 2013
18 Replies · 7,661 Views
Last post by waltosmuler
Sep 13, 2023
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Hammer (Custom Elevator Bases)
by Cathy_Owner · Aug 07, 2023
0 Replies · 2,281 Views
No replies
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p2map_publish fix!!!
by TreasureGhost · Oct 22, 2015
14 Replies · 6,675 Views
Last post by DrPeeper@The Mover Cell
Jul 30, 2023
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Hammer Run Map Error (If Helps Using Hammer ++)
by poompoompow · Jun 04, 2023
0 Replies · 1,026 Views
No replies
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An issue with cubemaps
by Catradora sustains me · Apr 14, 2023
0 Replies · 1,126 Views
No replies
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How to change the Portal 2 portal gun view model
by BLUcat5995 · Nov 24, 2020
2 Replies · 2,085 Views
Last post by Badpoolinator
Apr 13, 2023
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Horrible Compile Results.
by whytoexist · Mar 06, 2023
0 Replies · 1,295 Views
No replies
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npc_rocket_turret crashes game as it is loaded to view
by screret · Apr 10, 2021
2 Replies · 1,587 Views
Last post by Toony17xd
Dec 11, 2022
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Hammer. Can't load vmf to func_instance.
by Joka19 · Oct 23, 2022
0 Replies · 1,038 Views
No replies