Spring-return actuators interpolate charged to sprung
Frame A is the spring-return actuator charged, frame B is the same body at fail-safe: Flux 3 first-last interpolates 5–20s at 9cr with native audio; the cylinder-rod travel page already spent stroke on a photographed barrel, and this leftover is the spring pack.
Frame A is the spring-return actuator charged, frame B is the same body at fail-safe: Flux 3 first-last interpolates 5–20s at 9cr with native audio; the cylinder-rod travel page already spent stroke on a photographed barrel, and this leftover is the spring pack.
A spring-return listing is not a double-acting rod that travels on a photographed cylinder. It is one body in two states: springs compressed (charged), then the pack dumped to the fail-safe position you actually sell. Interpolation between those two stills is the ad. A generated body that fattens the yoke on the way home is a different actuator.
Charged, then fail-safe, same body
Procurement is matching a spring-return: this ISO flange, this pinion, this spring-pack length, the indicator on the cover. Charged is air (or power) on, springs compressed, the position you hold in service. Fail-safe is the sprung rest — closed, open, or the clock you printed on the cut sheet. Photograph that pair. Do not prompt a cousin scotch-yoke with a prettier paint job and a different pack.
Actuator rods travel in Kling after the cylinder photo is yours already spent silent stroke on a photographed barrel: Kling O1, image required, 56 credits, 3s–10s, audio empty. Do not twin it. That leftover is a double-acting rod. This leftover is the spring pack. Copying rod travel onto a fail-safe is how a specifier never sees the pack.
Keep the indicator and the flange large in frame. If the still hides the pack, the interpolate will not invent an honest one. Crop people.
Flux 3 interpolates 5–20s at 9cr
Photograph the actuator square-on, or at the three-quarter you already print on the cut sheet. Charged. Indicator readable. That is frame A. Do not touch the tripod. Dump to fail-safe — same body, same flange, same spring can. That is frame B.
First-last frame takes those two stills and generates the motion between them. Ordinary image-to-video improvises the ending. First-last has to land. The two frames have to be connectable: same serial, same pack, same lens height, same lighting family. A charged 2-inch return into a sprung 3-inch cousin is a morph of the SKU.
Prompt the travel, not the objects. "Spring pack dumps on the same body, flange static, camera locked, no new pinion." Re-describing "pneumatic spring-return, ISO 5211, F07" restages the hardware. The stills already contain the class.
Do not treat a loop (same still in both slots) as a fail-safe demo. A loop is ambient motion on one plate. This offer needs two states. Partial stroke is a different pair — shoot that pair if that is the week.
Create a first-and-last-frame transition video is the named agent job: two photos in, one transition out. Cost is priced per model, shown before you confirm. This is not the plain "turn one photo into a video" capability.
Flux 3 First Last Frame to Video is the interpolation row: start frame and end frame, native audio, up to 1080p, 5s through 20s. The listed rate is 9 credits per second. Write the mix (a quiet bench, a pack dump, no speech) or write silence. A silent brief still gets a soundtrack you did not choose.
Iterate at 5s. Inspect the midpoint. Ends are held by construction. The middle is where a generator cheats — extra bolts, a second indicator, a flange that fattens. If the middle is wrong, reroll the motion, not the stills, unless a still was the lie.
This leftover is the spring pack, not rod travel
A double-acting cylinder is a rod. Spring-return is a pack that goes home when supply fails. Copying the Kling O1 playbook onto this body is how a specifier never sees fail-safe. Copying a plant tour — chips, docks, invented workers — is a manufacturers film you may not own.
Torque and spring-set are claims. A generate that "fails safe" by growing the can is a different SKU. If an F07 becomes an F10 for six frames, throw the take out. Overlay the figure number after picture lock. Do not ask the interpolate to typeset Nm on the cover. A constructed engineer walking damper spec is a presenter you do not need.
Order, and what not to glue on
Order: two approved stills of the same spring-return body; first-last on Flux 3; prompt only the pack travel. Reverse that order and you will pay for a cousin actuator that changed flange size on the way home.
Do not glue a talking applications person onto the interpolate. If a named engineer must speak, that person is real, on a different day. Do not use a last frame that is a different manufacturer's can. The model will connect them. Same body. Same pack. Charged, then sprung.
FAQ
Can I animate one photo of the charged actuator and hope it fails safe?
You can. The ending is then the model's guess. A spring-return ad is fail-safe on the same body, flange unchanged. Pin that still as the last frame or you are not selling the pack.
Why Flux 3 instead of Kling O1 rod travel?
Because this leftover is two states of a spring pack, not a silent stroke on a barrel. Flux 3 first-last is 5s–20s, up to 1080p, 9 credits per second, native audio. Kling O1 already spent the cylinder. Do not twin it.
Do the two photos have to share the same spring can?
Yes. Same body, same flange, same indicator family, same lighting neighbourhood. A noon still into a night still is a time-lapse you should prompt as one. A different actuator is a morph. Missing the sprung pair is a different job.
Is this the same as uploading one image to image-to-video?
No. One image is open-ended motion. Two images is a bounded landing. The agent notes that this capability needs first frame and last frame. Missing the fail-safe still is a different job.