Use T for the Portal Gun in Portal Sandbox. That key-to-action mapping is stated in the current official description. The public text does not define the placement input, valid surfaces, range, portal limit, fluid behavior, or destination rules, so use the current on-screen feedback for every step after selection.
Start with a controlled selection test
Join the experience by D3wsie at Place ID 75108253383447, move away from a crowded fight, and close chat or menus. Press T once. Look for the current tool name, model, reticle, animation, sound, or another visible sign that Portal Gun is active. Do not press Mech Blaster, Robo Arms, or Blender Dimension during this first check.
If T produces no visible result, press Escape or tap away from a text field to restore game focus. Confirm that you are in the correct experience and that the live description still lists the same action. Rejoin once if the tool state appears stuck.
Place and cross one portal at a time
Choose a clear nearby surface and follow the operation shown by the live UI. Watch for acceptance, rejection, range, or aim feedback. Because the official description does not publish valid-surface rules, a failed target is information about the current build—not proof that T failed to select the tool.
Once a portal is available, identify your starting landmark before crossing. Enter once, turn around, and locate the return path. Repeat with the same simple route until selection, placement, crossing, and return feel like four distinct steps. This is more reliable than firing several portals rapidly and losing track of which action caused the result.
Keep Portal Gun separate from Blender Dimension
Portal Gun and Blender Dimension both involve portals, but they are different controls. T selects or activates the Portal Gun action. F is assigned to Blender Dimension, with the explicit instruction to press it before entering a portal.
If your goal is a normal portal test, do not add F. If your goal is Blender Dimension, prepare the portal, stop outside it, press F, observe the current feedback, and then cross. The Blender Dimension guide covers that sequence in detail.
Build a returnable freeroam route
In freeroam, name the starting area or landmark before the first crossing. After arriving, identify one visual feature that can lead you back. Add a second portal or destination only when you understand the first return path. Portals are more useful for exploration when each crossing has a purpose and a recovery plan.
The public description does not provide a complete dimension or map index. Read the current R Dimensions interface instead of expecting a destination from another portal-themed game. Similar names and television inspiration do not prove that a location exists here.
Use the Portal Gun around PvP carefully
Other players can make a clean control test difficult. An interrupted action, moving target, blocked view, or rapid tool swap may look like a Portal Gun failure. Learn the travel loop away from combat first, then add Mech Blaster or Robo Arms as separate tools.
If a paid portal-gun variant is equipped, compare it only with the entitlement stated in its official pass listing. Evil Morty’s Portal Gun advertises a named gun, portal fluid, and recolored UI buttons. Rick Primes Portal Gun and Ricks Prototype advertise access to named variants. Those descriptions do not publish damage, speed, placement range, or a competitive advantage.
Troubleshoot Portal Gun not working
Use a short checklist: verify Place ID, close chat, press T, confirm the visible tool state, aim at a different clear surface, and follow the current placement prompt. Move away from a portal transition and a crowded fight. Rejoin once if the same short sequence continues to fail.
Record the device, server time, target surface, visible tool name, and feedback. On mobile or controller, report the action label and actual on-screen button rather than calling it T. The developer states all-device compatibility except VR, but exact non-keyboard bindings are not documented publicly.
Do not use an executor or paste unknown scripts to repair the tool. Portal Sandbox is labeled beta, so a repeatable issue should be described clearly and reported through a creator-linked destination without sharing private account data.
Decide whether a portal-gun pass is useful
Learn the default Portal Gun first. Then ask whether you want the exact variant, portal fluid, or UI change named in the official pass description. Confirm the current Robux price and sale state in Roblox immediately before purchase. The Gamepasses guide records the dated official listing and separates advertised benefits from unverified power claims.
Portal Gun questions
What key uses the Portal Gun?
The current official keyboard control is T.
Does T place a portal automatically?
The official description names the Portal Gun action but does not publish the full placement operation. Follow the current in-game prompt after selection.
Is Blender Dimension part of the Portal Gun key?
No. Blender Dimension is listed separately on F, and F must be pressed before entering a portal.
Are paid portal guns stronger?
The public pass descriptions confirm access and listed cosmetic or variant features. They do not publish a universal damage or speed advantage.