18M views with 17K followers: how to make absurd engineering reels with Claude

A step-by-step guide to this format: what @buildplain does, why a reel with 18.2M views works, the Claude prompts to make your own version, and how postreadygo posts one every day at the best time on every platform.

“How a balcony becomes an anti-aircraft base?” Reinforce the slab, add the rails, mount the radar, all explained like a serious engineering lesson. The reel has 18.2 million views and 715,000 shares, from an account with about 17,700 followers.

The format, and why it works

The account we looked at is @buildplain on Instagram, with about 17.7K followers as of November 12, 2026.

The reel, posted on November 6, 2026, had 18.2M views, about 1.1M likes, 6,805 comments and 715K shares. Most other reels on the page are under 100K.

• A serious voice about a ridiculous idea. That contrast is the joke.
• It still teaches something real about how buildings work.
• 715K shares: people send it with “we should do this”.

What Claude is and how to get an account

Claude is an AI assistant made by Anthropic. It can research, write scripts and prompts, and write the code that draws an animation in your browser.

1. Go to claude.ai or install the Claude app.
2. Sign up with your email address or your Google account.
3. Type your first message in the box at the bottom.

Step 1: Claude writes the upgrades

Claude writes the upgrades prompt

Write “How a balcony becomes [SOMETHING ABSURD]” as 6 steps in a serious engineering tone.
Use real building terms (slab, load, reinforcement) and keep the physics plausible.
Give me 20 more absurd upgrades for normal buildings.

Read what Claude gives you and change anything that does not sound like you.

Step 2: Claude builds them in 3D

Claude builds them in 3D prompt

Build this as a single HTML file with three.js, vertical 1080x1920.
A simple apartment building with one balcony. Add each upgrade as a new part, with a cutaway to show the structure.
Captions in the middle, one word at a time. Add a Record button that downloads the video.

If something looks wrong, tell Claude what you see and it fixes it.

Why posting by hand holds you back

• Five apps, five uploads. The same video, the same caption, again and again for Instagram, TikTok, YouTube, Facebook and Threads.
• The wrong time. You post when you remember, not when your audience is online.
• One busy day breaks the streak. Then two, then a week, and the account stops growing.

With postreadygo, one message to Claude schedules a whole month: one video a day, each at its best time, on every platform at once. That is 30 posts a month per platform, without opening a single app.

Step 3: Connect postreadygo to Claude

1. Go to postreadygo.com and click Get started for free. Then open Linked and connect Instagram, TikTok, YouTube or any other supported network.
2. In Claude, open Settings, then Connectors, then Add custom connector.
3. Name it postreadygo and paste: https://www.postreadygo.com/mcp
4. Click Connect, sign in to postreadygo and press Allow.
5. Test it: “List my postreadygo accounts.”

Step 4: One a day, on autopilot

Scheduling prompt

Here are 30 videos.
Post one every day at the best time on Instagram, TikTok, YouTube, Facebook and Threads, starting tomorrow.
Write a caption for each that ends with a question.
Show me the plan before you schedule anything.

Questions people ask

Do I need special skills?

No. Claude writes the scripts, prompts and code. You check the result and press Record or generate the scenes.

Will my video get the same views?

Nobody can promise that. What you control is the format and posting consistently, which gives every video a chance.

How much does postreadygo cost?

You can get started for free with a 3-day trial. After that, plans start at $9 per month. Current prices are on the postreadygo home page.

Which platforms can I post to?

Instagram, TikTok, YouTube, X, LinkedIn, Facebook, Threads, Pinterest and Bluesky.