Rotengin™ — Frequently Asked Questions (FAQ)

Product & Usage

What exactly does Rotengin™ do?

Rotengin™ is the first fully automatic herbal preparation tool — it forms, compresses, and shapes your wrap or paper into a clean, uniform structure within seconds. No manual shaping required.

Can it work with both papers and wraps?

Yes. It's compatible with most standard paper and wrap formats.We offer two sizes: Small Size: prepares approx. 0.5–1.5 g of material (ideal for small-format wraps) Large Size: prepares approx. 1.5–4 g of material (ideal for large-format wraps)

How long does one preparation take?

About 20–30 seconds from load to finish.

Do I need to apply anything to seal the edge?

Some users choose to add a light touch of moisture to the paper edge for a firmer finish, but this step is optional.

Maintenance & Replacement

How do I clean it?

Regular cleaning keeps the device running at peak performance.After every few uses, open the side and front panels, tilt the unit downward, and brush out any loose material.For deeper cleaning, the stainless-steel shafts can be detached by gently pulling them outward from their sockets. Wipe each shaft and the inner cloth apron with a dry or lightly damp cloth, then reassemble. No special tools required.

How long does the inner cloth apron last?

Depending on usage and material consistency, the inner cloth apron typically lasts for about 600–1,200 preparation cycles before replacement.To replace it, slide the worn cloth off both shafts, then align the new apron with the same orientation and tension. Gently guide each shaft back through the cloth loops until both ends lock into place. Ensure the apron lies flat and even before closing the panels.

Where can I buy replacement parts or cloth aprons?

Replacement cloth aprons, shafts, and cleaning brushes will be available directly through our official store at rotengin.com.You'll also receive an email notification whenever new parts are restocked.

What if I apply moisture or use edge-sealing products often?

Using a light edge-moistening or sealing product is fine — just keep the application thin.Allow a few seconds for it to dry before completing the preparation to prevent sticking.If you use sealing products regularly, wipe the inner cloth apron and shafts after every few uses.For deeper cleaning, detach both shafts and gently clean any buildup with a cloth and a small amount of isopropyl alcohol. Avoid thick or sugar-based formulas, as they can leave heavier residue.

Charging & Technical Details

Is it rechargeable?

Yes — Rotengin™ uses a built-in lithium battery and supports USB-C fast charging.

How long does one full charge last, and how do I know when to recharge?

Rotengin™ features a five-level LED indicator — five bars means fully charged; one bar means it's time to recharge. A full charge takes about 2–3 hours using the included USB-C cable. You can safely use the device while it's charging. Each full charge typically supports 30–50 rolls, depending on usage and load size. For best performance, keep the battery above 20% to ensure the motor maintains full torque and consistent rolling strength. You can safely use the device while charging.

How do I turn Rotengin™ on and off?

Press and hold the power button until the LED indicator turns on — this means the device is active and ready for use.To begin a preparation cycle, place your material and wrap inside the chamber, close the front panel, and press and hold the front operation button to start the automated process.Release the button once the cycle finishes. To power off the device, press and hold the power button again until the LED indicator turns off.For best battery performance, it’s recommended to power off the unit after each use to maximize runtime between charges.

Can I use it while charging?

Yes. Rotengin™ supports "pass-through" charging, so you can use it while plugged in.

Does Rotengin™ support fast charging?

No. Please use a regular 5 V 1–2 A USB-C cable and adapter. High-voltage fast-charge adapters (9 V/12 V) may trigger the battery’s protection circuit, causing the device to stop charging.Switch back to a standard 5 V charger to restore normal function.

Shipping & Return Policy

How long does shipping take?

Orders are typically processed within 3 business days, with delivery estimated between 5–10 business days depending on your location.At this time, we ship within the United States only. International shipping will be available soon.

Is an adult signature required upon delivery, and what if I don't receive the package?

All shipments require an adult signature (21+) upon delivery. If tracking shows your order as delivered but you have not received it, it may have been accepted by someone nearby (e.g., a neighbor).Please notify us at support@rotengin.com within 24 hours of the delivery status update so we can assist you immediately.

How Can I track my order?

Tracking information will be provided once your order has been processed.You can access your tracking number via the confirmation email or directly in your order dashboard.

What's your return policy?

All Sales Are Final. Rotengin™ devices are precision-engineered products designed for personal use. Due to hygiene and product integrity, all sales are considered final. We do not accept returns for non-defective items once opened or used. If your device arrives defective or malfunctions upon arrival, please contact support@rotengin.com within 7 days for a prompt replacement .

What if my unit arrives defective or not working properly?

Each Rotengin™ device is individually inspected and tested before shipment to ensure full functionality. If your unit arrives defective or malfunctioning upon arrival, we will provide a replacement unit at no additional cost. To verify the issue, please email support@rotengin.com within 7 days of delivery, including: 1. Your order number 2. A brief description of the issue 3. Photos or a short video showing the problem.  Once the defect is confirmed, we’ll ship a replacement promptly. You do not need to return the used unit for inspection — we simply ask you to dispose of it safely.