Here is a list of constraints that apply to Blade Symphony workshop items (this will not affect previous items before this post date):


Swords
Max triangles: 4000
Max materials: 2
Max texture resolution: 1024 * 1024 pixels (ratio variable, for example 512 * 2048)
Max texture file size: 4096 kbytes (DXT formats), 1024 kbytes (any format)
Required root bone: sword_grip
Max bounds (measured from sword_grip bone): -15, -10, -10 to 55, 10, 10
Min bounds (measured from sword_grip bone) : -5, -0.5, -0.5 to 35, 0.5, 0.5

Scabbards
Max triangles: 4000
Max materials: 2
Max texture resolution: 1024 * 1024 pixels (ratio variable, for example 512 * 2048)
Max texture file size: 4096 kbytes (DXT formats), 1024 kbytes (any format)
Required root bone: sheathe_attach_back OR sheathe_attach_hip
Required attachment on root bone: anim_sheathe
Max bounds (measured from attachment): -10, -12, -12 to 60, 12, 12
Max jiggle bones: 5

Tracers
Max texture resolution: 1024 * 1024 pixels (ratio variable, for example 512 * 2048)
Max texture file size: 4096 kbytes (any format)

Masks
Max triangles: 3000
Max materials: 2
Max texture resolution: 1024 * 1024 pixels (ratio variable, for example 512 * 2048)
Max texture file size: 4096 kbytes (DXT formats), 1024 kbytes (any format)
Required root bone: ValveBiped.Bip01_Head1
Max bounds (measured from ValveBiped.Bip01_Head1 bone): -10, -12, -12 to 25, 12, 12
Max jiggle bones: 5
Allowed bone merge bones:
ValveBiped.Bip01_R_Clavicle
ValveBiped.Bip01_L_Clavicle
ValveBiped.Bip01_Neck1
ValveBiped.Bip01_Spine4

Customization screen icons
Texture resolution: 64 * 64 pixels
Max texture file size: 4096 kbytes (any format)

Attachments
Max triangles: 3000
Max materials: 2
Max texture resolution: 512 * 512 pixels (ratio variable, for example 1024 * 256)
Max texture file size: 4096 kbytes (DXT formats), 1024 kbytes (any format)
Max jiggle bones: 5

Skins
Max texture resolution: 1024 * 1024 pixels
Max texture file size: 4096 kbytes (DXT formats), 1024 kbytes (any format)