Sell your designs on Cults3D, step by step
With the Studio plan, create an API key in your Cults3D account, paste it in My Studio → My stores along with your username and, from the designer, “Publish to my store” puts your piece's STL on sale.
What the site does and what you do
- Checks with Cults3D that your username and key work before saving them, and stores the key encrypted in your account
- Uploads to Cults3D the same STL file “Download” gives you, already oriented for printing
- Builds the photos of the piece with “Photo to sell” and, if you ask for it, the finished-cookie photo with AI (1 credit)
- Writes the title, description and tags with AI in your language, if you ask for it (1 credit)
- Picks the Cults3D category based on the product (for example, kitchen for a cutter)
- Sets the “Private Use” license: buyers print it for themselves and can't resell the file
- →Having a Cults3D account and creating the key there: the site can't do it for you
- →The price: you decide it, in euros, from €0.50
- →Getting paid for sales: how and when Cults3D pays you is in your account there
- →Editing or deleting the listing after publishing: that's done from your Cults3D account
- →Having the right to sell the drawing: characters and brands usually have an owner
What an API key is, in plain words
Cults3D is a store of files for 3D printing: people buy the STL and print it at home. What you build in the designer is exactly that, an STL, so you can sell it there.
Etsy or Shopify connect with a button that takes you to their page to grant permission. Cults3D has no such button. Instead it lets you create an “API key”: a long piece of text that works like a spare key to your account, meant for programs like KingsCutter.
With that key, the site can upload designs to your Cults3D account. Your Cults3D password is never typed here and we never see it. The key is stored encrypted, and you can cut it off whenever you want: by disconnecting Cults3D in My stores and deleting the key on Cults3D.
The username is your name on Cults3D, the one at the end of your profile's address: in cults3d.com/en/users/AnnaBakes, the username is AnnaBakes. It isn't your email.
Connecting Cults3D is part of the Studio plan, like all of “Publish to my store”.
Get your Cults3D account ready
If you don't have a Cults3D account yet, create one at cults3d.com. How and when Cults3D pays you for sales is set up in your account there.
Log in to Cults3D in the same browser you use for KingsCutter: the next steps go faster that way.
Find your username
Open your profile on Cults3D and look at the address at the top of the browser. It ends with your username: in cults3d.com/en/users/AnnaBakes, the username is AnnaBakes.
Write it down exactly as it is, with its capital and lowercase letters. You'll paste it in step 4.
Create your API key
With your Cults3D session open, go to cults3d.com/en/api/keys. You can also get there with the “Create my key on Cults3D” link on the Cults3D card, in My stores.
Create a new key. If Cults3D lets you name it, type “KingsCutter” so you recognize it later.
If it offers a read-only key, don't pick it: with that one you can connect, but not publish.
Copy the whole key. It's a long string of letters and numbers; if a piece is left out, it won't work. Treat it like a password: whoever has it can upload designs to your account.
Connect it in My stores
On KingsCutter, go to My Studio → My stores and find the Cults3D card. Paste your username in “Your Cults3D username” and the key in “Your Cults3D API key”. Tap “Connect”.
The site asks Cults3D whether the key works. If it does, “Done: Cults3D is connected” shows up at the top and you see it under “Connected stores”. If not, the card tells you what to check.
You only do this once. After that, you just publish.
Build your piece in the designer
Design as usual: upload the image, pick the product and adjust the measurements. Once the piece is generated, “Publish to my store · Studio” shows up under “Selling in volume”. Open it.
Pick Cults3D and write the listing
Under “Stores”, tick Cults3D. “What you sell” stays on “The file (STL)”: Cults3D only sells files.
Enter the price in euros, from €0.50.
You write the title, description and tags yourself, or ask the AI with “Write with AI” (1 credit). On the right, the preview shows how the listing will look.
Choose the photos: the three from “Photo to sell” come on their own; the finished-cookie photo with AI is optional.
If you tick Cults3D together with Mercado Libre, the button turns off: Mercado Libre only sells the printed piece and Cults3D only the file. Publish on one first and then on the other.
Read the notice and tap “Publish now”
Before the button there's a notice in a box: on Cults3D the design goes on sale as soon as you create it, under the “Private Use” license. Cults3D has no drafts, so check everything before tapping the button.
Tap “Publish now”. First you'll see “Uploading the file…” (the STL goes up in parts) and then the result: “Done: your design is now on sale”, with the “View listing” button.
If you ticked other stores besides Cults3D, a draft is created in those, as usual.
After publishing
Tap “View listing” and check the text, photos and file on Cults3D. If you want to change something, do it from your Cults3D account: the site doesn't edit listings already created.
In My stores, under “Latest listings”, each publication stays with its link.
