3G SDI Mount

$49.00

Keep your Blackmagic SDI converter secure and within reach. The 3G-SDI Converter Mount attaches directly to the FX Cine Extension, giving your converter a dedicated, locked-in home on your rig — no velcro, no dangling cables, no improvising on set.

FEATURES:

Secure dedicated mount — Holds your Blackmagic 3G-SDI converter firmly in place so it stays put through handheld, gimbal, and run-and-gun work.

Clean cable management — Keeps your SDI converter positioned close to the source, shortening cable runs and reducing clutter on your build.

Compatible with FX Cine Extension — Designed specifically for the FX Cine Extension platform, no adapters or workarounds needed.

Handmade in the USA — Built to the same standard as the FX Cine Extension using carbon fiber reinforced material.

Customer reviews

This FilmCube is sick! This thing is amazing! It really helped us on the shoot. I'm gonna need like 3 of them, honestly. Beasty!

FilmCube has made it so easy to rig all of my needed gear to my FX3 and A7siii. I got 2 of them and they fit my workflow perfectly. Finally my camera isn't front heavy or have that terrible gap.

I absolutely love my FilmCube! The versatility it added to my FX30 rig is a game changer and with an affordable price! On top of that; whenever I had a problem with my order customer service took care of my problem within mins! I would definitely recommend the FilmCube!

FAQ_

ABOUT THE FX CINE EXTENSION

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What cameras does it work with?

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.

Does it work with the XLR top handle?

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.

What's included?

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

When will it ship?

FX EXTENSION ships in about 2-4 days after you make your order. Shipping can take anywhere between 2-8 days depending on your location or if we are shipping internationally.

We ship out of Columbus, OH.

We’ll email you an update as soon as your product ships.

Are returns available?

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.

Where and how is it made?

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.