Built to Adapt, Engineered to Perform
FK One Adjust pushes machine engineering forward with patent-pending stroke adjustment technology and a fully reimagined, artist-driven build.
Change your stroke on the fly in seconds—from 2.0mm to 5.0mm in 0.5mm increments. This is adaptability in motion, built directly into the frame, so you can have versatility with no limitations. FK One Adjust eliminates the need to juggle multiple machines or cams. Move from heavy packing to delicate detailing in one continuous workflow, with precision you can feel.
This machine boasts real innovation that delivers: engineering evolution is at the heart of what makes FK One Adjust so great. The stroke adjustment system operates with mechanical precision, letting you fine-tune responsiveness mid-session without powering down—something no other adjustable stroke system allows.
Designed with artists at every stage of development, this machine is an artist-first powerhouse. Every mechanical choice was made to deliver consistent torque, clean transfer, and stable performance across every style.
An upgraded digital display keeps you in total control. View your output in volts or hertz—your choice. Hertz gives a true frequency readout of needle movement per second, offering the most accurate insight into performance possible. That’s engineered for full visibility and control.
And because FK builds machines to outlast your schedule, the FK One Adjust is built to last Every component is tested for endurance and supported by FK’s global service network.
Key Features:
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Machine Size: 152mm x 38mm
- Weight with Battery: 244g (8.6oz) w/ 18500A Battery / 268g (9.5oz) w/ 18650A Battery
- Features patent-pending adjustable stroke technology (adjust your stroke without powering down)
- Upgraded digital display screen: shows power output in volts or hertz according to your preference
- Stroke Range: 2.0mm up to 5.0mm
- Equipped with an ergonomic grip for maximum comfort
- Compatible with other FK Irons modular grips
- Features a brushed motor
- Output Voltage: 5V–12V
- Increment/Decrement Voltage Interval: 0.5V or 0.2V
- Maximum Output Current: 1A
Battery Specifications:
- Comes with two drop-in, rechargeable Panasonic batteries + 2 caps
- 18500A Battery Life: ~5.5 Hours (dependent on settings + operating parameters)
- 18650 Battery Life: ~6.5 Hours (dependent on settings + operating parameters)
- 18500A Battery uses shorter cap → 0.25” depth
- 18650A Battery uses longer cap → 0.75" depth
Resources:
User Manual(1mb) (opens in a new window)
