Frequently asked questions

• Kit 4.1 ($79): our pick for your first arm, university or teaching. No soldering; includes STL files, code and app.
• Kit 5.0 ($159): the big one, with 8 servos, more reach and strength. No soldering. Files are sold separately.
• Mini Kit ($65): the smallest and most affordable. Controlled with potentiometers, no computer needed.
• Kit 4.0 ($69): 6 servos at the lowest price, if you can solder.

Prices are in US dollars (USD).

No. No kit includes the printed parts and we don't offer 3D printing on request. You print them with our STL files, on your own printer or at a local printing service. With the STL files you can reprint any part whenever you want.

The electronics, the screws and tools to build it. The full list is on each kit's page: Mini, 4.0, 4.1 and 5.0.

The 4.0 does not include a soldering iron or the extra wire needed for the power connector, and its only tools are Allen keys: it's worth having screwdrivers at hand.

An FDM 3D printer. Filament: about 1 kg for the 5.0 and 500 to 600 g for the 4.1.

We recommend PLA, 9% gyroid infill (up to 15% for more strength), at least 3 walls and tree supports. Don't scale the parts: they are made to fit the servos and screws.

• 4.0 and 4.1: yes, with STL files, Arduino code and control app.
• Mini: yes, with the STL files.
• 5.0: no. The $159 is for the physical kit. To add the files (STL, code and app), tick “Add the digital files” on the kit page: it adds $10, or $11.70 if you use a discount code, unless an offer is running. They are also sold separately: pack at $11.70. Without the STL files you can't print the parts.

You can see the exact total in the cart and at checkout.

Soldering: the 4.1 and the 5.0 need no soldering. The 4.0 needs simple soldering. The Mini may require soldering.

Programming: not needed. On the 4.0, 4.1 and 5.0 (on this one, with the files) the code comes ready to upload, and you can edit it if you want.

Yes. The power supply has universal input voltage and a US plug. On the kit page choose “Plug type” and, if needed, a plug adapter is included at no cost.

It reaches about 40 cm. The load depends on the distance from the base and on the pose; these values are approximate:

• Free web app, nothing to install, for the 5.0 and the 4.1: over USB, with Chrome, Edge, Opera or Brave on a Windows, Mac or Linux computer. You move each servo, save poses and play them back. Its Pro Mode, in beta, also supports a PS4 or PS5 controller.
• Desktop app: for Windows and Linux. The 4.1 and 5.0 downloads also include a Mac version.
• Mini: with potentiometers, no computer needed.

On a phone the web app displays and simulates, but it does not connect to the arm. The 4.0 can be controlled from an Android phone with the Bluetooth module it includes and different code.

Yes. The Arduino code is editable and, over USB, you can send it positions from Python or another program.

For vision or AI, the camera and the model run on your computer or a Raspberry Pi, and the Arduino moves the servos. The web app's Pro Mode has inverse kinematics for the 5.0 only.

The 5.0 can also be controlled with an ESP32-WROOM over Wi-Fi or Bluetooth. The firmware is a test version and also works for the 4.1.

Editable: for the 5.0 we sell the STEP files at $31.36 (36 parts and the assembled arm). Those for the 4.0 and 4.1 are in our Cults3D store. STEP opens in SolidWorks, Fusion 360, FreeCAD and Onshape. There are no .sldprt files or 2D drawings: measurements are taken from the STEP.

Files only: for the 5.0, the $11.70 pack. For the 4.0 and 4.1, on Cults3D.

Spare parts: Arduino UNO, SG90 and MG90S servos, extension cables, connectors, screws and HC-06 Bluetooth module, in components.

Yes: if your country appears at checkout, we ship there with tracking. Orders leave our warehouse in China for every country, including Peru. If you are in Venezuela, write to us before you buy.

It is free and tracked on orders from $30, and every kit is above that amount. Orders under $30 pay a flat $15 fee.

Business days from payment to delivery, including preparation (1-5 business days):

These are estimates, not guaranteed delivery dates. Most orders arrive before the middle of the range; the full range also covers cases with slow customs.

Checkout only offers standard tracked shipping. If you need it by a specific date, write to us before you buy.

Possibly. Import taxes are charged by your country's customs, not by us, and they are your responsibility, except in the United States, where they are included as long as our shipping method allows it. The exact amount isn't known in advance.

• European Union: VAT from the first euro, plus a temporary flat 3 EUR duty.
• United Kingdom: VAT; duty only if the order is above 135 GBP.
• Mexico: VAT on orders above 50 USD; no duty up to 1,000 USD.
• Peru: no import taxes up to 200 USD. For customs we will ask for your DNI or RUC.
• Dominican Republic: tax-free up to 200 USD.
• Australia and New Zealand: no charges below AUD/NZD 1,000.
• Chile: charges from 41 USD. Guatemala, Ecuador, Uruguay and Bolivia: from the first dollar or close to it.
• Brazil: above 50 USD, 60% tax plus the state ICMS. Write to us before you buy.

This is for guidance only: customs rules change. The kit is declared complete and at its real value. More details in the shipping policy.

When it ships, you get the tracking number by email (and on WhatsApp if you left your number). You can track it on our tracking page, on 17track.net or on your national carrier's website.

Address: check it before paying and, if you need to correct it, write to us before the order ships. If a parcel is lost, delayed or returned because of an incorrect or incomplete address, the reshipment is at your expense.

Cancelling: within 3 calendar days of purchase, as long as it has not shipped yet. Once it has shipped, it can't be cancelled.

By card (Visa, Mastercard, American Express or Diners), PayPal or Binance Pay. You enter your card on PayPal's secure page; in many countries you don't need to create an account.

The price is in US dollars (USD): PayPal or your bank converts it to your currency. There are no installments, cash on delivery or bank transfers.

Try another browser, check that your card is enabled for international online purchases and, if your bank asks you to approve in its app, do it and come back to the page without closing it. You can also pay directly with PayPal.

If it still fails, message us on WhatsApp with the error message, without your card details. If you didn't get an email with an order number (check spam too), the payment was not completed: don't retry many times.

You pay in the shop with PayPal, which protects your purchase, or with Binance Pay. We never ask for your card details by chat and you can see the total before paying. Shipping is tracked, there is a 28-day warranty and we have over 600 customers in more than 20 countries. More about us in about us.

Once the payment is confirmed, in three ways: in the purchase email (check spam too), with the button on the order confirmation or in your shop account, signing in with the same email as the purchase. They stay there forever, with no download limit.

If you bought a kit with files, the files arrive when you pay and the kit travels separately: you can print the parts while it's on its way.

They are for personal and educational use. They can't be resold, redistributed or used to train AI.

They are not refundable once downloaded. If you have trouble accessing them or chose the wrong version or format, write to us and we will send you the right one.

It lasts 28 days from the day tracking shows the parcel as delivered. It covers factory-defective parts and shipping damage; we file the claim with the carrier.

It does not cover damage caused by wrong wiring, overvoltage or misuse, or the parts you print yourself. To review it we need your order number and photos or a video of the problem; for shipping damage, also a photo of the box.

All the details are in the warranty policy.

We don't accept returns for change of mind, except in countries where the law gives you that right, such as the European Union and the United Kingdom. In those cases your country's deadline and conditions apply, and return shipping is at your expense unless the law says otherwise.

If your order goes past the estimated range, write to us: we open an investigation with the carrier. A parcel is considered lost when the carrier confirms it, or when tracking shows no movement for 30 days after the maximum estimate. In that case we choose together between a free reshipment or a full refund.

If it shows as delivered and you didn't receive it, check with neighbours, your building reception or your local post office and let us know within 7 days.

There is no written or PDF manual. You build it with the YouTube videos (5.0, 4.0 and Mini) and the wiring diagram. The 4.1 doesn't have its own video yet. If you get stuck on a step, write to us.

Our first tip: test all the electronics before building the arm.

On WhatsApp at +51 990 996 163, Elara, our virtual assistant, will reply, and the team steps in when needed. You can also use the contact form or write to support@fabricreator.com.