The fx extension works with the Sony fx3 or fx30.
Enjoy the FilmCube on set or return it for a full refund if you don't love it.
Covered by a one year limited warranty so you can shoot with confidence.
Designed to work seamlessly with the XLR top handle without interfering with controls or access.
Allows components to be added or removed to fit different setups and workflows.
Scales easily across different crew sizes and production types.
V-mount battery mounts securely and immediately powers everything.
A dedicated switch prevents idle drain when the camera isn’t in use.
Quickly check battery status at a glance.
Four D-Tap outputs for powering multiple accessories.
Two regulated 5V USB-C ports for reliable accessory power.
A 7.5-amp slow-blow fuse helps protect connected gear.
Shifts weight rearward so a built-out FX3/FX30 feels steady and not front-heavy.
Keeps your handle workflow usable—so you can operate normally with your preferred top handle setup.
Built-in points for placing accessories fast, keeping layouts clean and repeatable.
Includes the essentials needed for mounting. Allen key & flathead screwdriver.
Build fast. Tear down faster. Use Our tool free, two-point locking system.
Pop the vmount without unplugging. FX Extension keeps cables off the battery.
every tool you need for mounting is built into the unified rig.
Leave the battery attached and shut it off at the switch To stop battery Drain.
Enjoy the FilmCube on set and return it for a full refund if you don't love it.
Free shipping in the USA and hassle free returns with no restock fee.
We ship internationally. Shipping rates are calculated at checkout.
Mirrorless cameras are compact but lack mounting points and space to place necessary attachments. FilmCube solves that problem.
Everyone builds their rig differently. FilmCube gives you the flexibility to set things up the way you need.
To get perfect shots you need balance. FilmCube counter balances the front heavy nature of mirrorless cameras.
FilmCube reduces fatigue and boosts shot steadiness for a more comfortable filming experience.
FX EXTENSION is designed for the Sony FX3 and Sony FX30. It mounts directly to these bodies to create a cohesive rear core for your rig—built around real-world setups like monitor + wireless video or timecode—while keeping the camera’s workflow intact.
Yes — FX EXTENSION is fully compatible with the Sony XLR top handle. You can keep the handle installed while using the system. The design maintains clear access to ports and controls, so your audio workflow and ergonomics stay untouched.
Everything you need to rig and power your FX EXTENSION.
Plus the essential mounting tools and accessories to get shooting fast.
3D printed – FX Extension UniBody
– Top/Bottom Cheese Plate
– Vmount Plate
– Dtap Splitter
– 2x – USB-C Ports
– Power switch
– 2x USB C ports
– Cold shoe
– Nato Rail
– Bottom cover for rod mount
– Allen/hex key
– Coin Shaped Flathead Screwdriver
Accessories:
– 15mm rod clamp
– Extra Allen/hex Key
– XLR Handle adapter (with Bubble level)
– Manual/Paperwork/Stickers
FX EXTENSION ships in batches after your preorder:
Batch 1: ships in 30–60 days
Batch 2: ships in 60–90 days
Batch 3: ships in 90+ days
We’ll email you an update as your batch moves into production and again when it ships.
Yes! We have a 30 day return policy so you can see if the FX Extension perfectly fits your workflow. There is NO restock fee.
FX EXTENSION is handmade in the USA. Each unit is quality-tested before shipping and may show slight variation in finish or appearance—because it’s not mass-produced.
The core structure is 3D printed using carbon fiber–reinforced material for strength and a premium finish.
