Building Tools by F3X (also known as simply F3X or BTools for short) is a widely-known building tool created by GigsD4X. The tool contains 14 default tools for creating, editing, and deleting parts in-game and in studio. Each tool has its own purpose, which allows lots of customization when used.
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Tools[]
Move Tool[]
The move tool allows the user to move the selected objects in any direction. On the side menu, the user can customize the increment used, and the axes to be used (Local, Global, or Last).
Resize Tool[]
The resize tool allows the user to resize the selected objects in any direction. On the side menu, the user can customize the increment used, and whether or not the part will be expanded in both directions.
Rotate Tool[]
The rotate tool allows the user to rotate the selected objects in any direction. On the side menu, the user can customize the increment used, and the pivotal point (Center, Local, or Last).
Paint Tool[]
The paint tool allows the user to select a color from a full color palette, or 132 choices. Parts that are selected at the time will be changed, and parts that are clicked will be instantly changed.
Surface Tool[]
The surface tool allows the user to change the surface type of all or specific sides of the selected parts.
Material Tool[]
The material tool allows the user to change the material, transparency, and reflection of the selected parts.
Anchor Tool[]
The anchor tool allows the user to set whether or not the selected parts are anchored.
Collision Tool[]
The collision tool allows the user to set whether or not the selected parts can collide with other parts.
New Part Tool[]
The new part tool creates a new part at the mouse's position. Normal, truss, wedge, corner, cylinder, ball, seat, vehicle seat, and spawn are all different options for part creation.
Mesh Tool[]
The mesh tool allows the user to add a mesh to selected parts. If HTTP is enabled, the tool will automatically find the correct ID, meaning that the direct ID does not have to be provided.
Texture Tool[]
The texture tool allows the user to add a decal or texture to selected parts. The decal/texture can be created on any face. If HTTP is enabled, the tool will automatically find the correct ID, meaning that the direct ID does not have to be provided.
Weld Tool[]
The weld tool allows the user to weld two or more parts together, keeping their relative distance the same but the parts move together.
Lighting Tool[]
The lighting tool allows the user to add a SpotLight, PointLight, and/or SurfaceLight to the selected parts, and can be customized fully.
Decorate Tool[]
The decorate tool allows the user to add Smoke, Fire, and/or Sparkles effects to the selected parts, and can be customized fully.
Exporting[]

F3X provides the ability to export in game builds to studio through the Import from Building Tools by F3X plugin. When the user presses the export button, the model is sent to a third party website where a code is sent back which allows the model to be loaded into Roblox Studio.