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!

Announcements
Forum Rules and Important Info - Read Before Posting!
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by msleeper Aug 20, 2010 4 Replies · 74,617 Views
by WinstonSmith
Jul 13, 2011
The ThinkingWithPortals Map Showcasing Thread
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by WinstonSmith Jun 27, 2011 2,565 Replies · 626,607 Views
by vrad.exe
Nov 21, 2025
Mapping Tips and Useful Links
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by espen180 Nov 19, 2007 67 Replies · 71,577 Views
by kyleprotecX
Sep 19, 2015
Musings on level design and quality control at TWP
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by msleeper Jul 25, 2012 13 Replies · 101,693 Views
by Alexander Bell
Jan 24, 2013
New to mapping? Never used Hammer before? LOOK HERE!
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by msleeper Apr 15, 2008 0 Replies · 21,576 Views
No replies
Topics
Voices Cut Off Early in Portal 2 Dubbing
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by MateuszWis93 Jul 27, 2024 1 Replies · 1,864 Views
by nata17niel
Jul 16, 2025
Edit an old map without p2c file.
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by Jack Schitt May 02, 2025 0 Replies · 1,848 Views
No replies
Hammer compile error : "info_player_start leaked"
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by Lulu May 02, 2024 1 Replies · 1,483 Views
by lexiosity
Dec 10, 2024
Help with teamSpen210 addons.
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by PortalBit Nov 11, 2024 0 Replies · 999 Views
No replies
How to make voice lines?
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by PortalBit Nov 10, 2024 0 Replies · 871 Views
No replies
Tutorial for Observation Rooms?
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by AutoDMC Nov 12, 2007 27 Replies · 11,079 Views
by Zahra
Oct 24, 2024
Hammer isnt compling
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by styxwastaken May 27, 2024 0 Replies · 979 Views
No replies
[SOLVED] Retexturing cores for custom story mod
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by Orinji Neko Feb 14, 2019 2 Replies · 2,402 Views
by SpeedierGuide98
Jan 11, 2024
Editing .MDL files?
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by Flo2912 Sep 22, 2013 18 Replies · 7,181 Views
by waltosmuler
Sep 13, 2023
Hammer (Custom Elevator Bases)
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by Cathy_Owner Aug 07, 2023 0 Replies · 2,219 Views
No replies
p2map_publish fix!!!
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by TreasureGhost Oct 22, 2015 14 Replies · 6,354 Views
by DrPeeper@The Mover Cell
Jul 30, 2023
Hammer Run Map Error (If Helps Using Hammer ++)
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by poompoompow Jun 04, 2023 0 Replies · 963 Views
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When I try to run map on normal and all expert settings my map compiles but portal 2 does not load
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by NMT-BLU May 06, 2023 0 Replies · 851 Views
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can someone tell me what this means? i think its not letting me start my map. it loads fine in portal 2 when i use the command but is missing a few things.
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by Shisho Apr 18, 2023 2 Replies · 1,035 Views
by Shisho
Apr 18, 2023
An issue with cubemaps
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by Catradora sustains me Apr 14, 2023 0 Replies · 1,064 Views
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How to change the Portal 2 portal gun view model
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by BLUcat5995 Nov 24, 2020 2 Replies · 1,928 Views
by Badpoolinator
Apr 13, 2023
Horrible Compile Results.
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by whytoexist Mar 06, 2023 0 Replies · 1,237 Views
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npc_rocket_turret crashes game as it is loaded to view
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by screret Apr 10, 2021 2 Replies · 1,513 Views
by Toony17xd
Dec 11, 2022
Hammer. Can't load vmf to func_instance.
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by Joka19 Oct 23, 2022 0 Replies · 1,004 Views
No replies
Portal 2 overlay texture mask
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by TwoKrazy Jul 15, 2021 1 Replies · 1,804 Views
by TwoKrazy
Jun 28, 2022