How to Automatically Generate Formwork in Revit Using Dynamo Player | FORMWORK.dyn Download

Hello! This is ChickenBanana Lab. In this post, I will guide you step-by-step on how to automatically generate formwork elements using Autodesk Revit 2026 and Dynamo 3.6.0, as introduced in the video.

Experience a much faster and more efficient workflow by handling repetitive manual formwork modeling with the FORMWORK.dyn Dynamo Player file!

Video link : https://youtu.be/E59_HT8UJHs

💻 Software Environment (Versions)

This tutorial was created based on the following versions:

• Autodesk Revit 2026

• Dynamo 3.6.0

🛠️ Step 1. Preparation (Revit Settings)

Before running the Dynamo file, you must first create vertical and horizontal formwork types in Revit.

• Create Vertical Formwork: Create a vertical formwork type using the Wall element.

• Create Horizontal Formwork: Create a horizontal formwork type using the Floor element.

⚠️ Crucial Note: The type names for both vertical and horizontal formwork must be identical and written in uppercase as FORMWORK. If the names are different, the script may not operate properly.

📂 Step 2. Dynamo Player Folder Setup

1. Go to the [Manage] tab at the top of Revit and launch [Dynamo Player].

2. Click the [Open in Explorer] icon at the top of the Dynamo Player window.

3. Download the FORMWORK.dyn file from the link below and copy it into the opened folder.

4. Return to the Dynamo Player window and click on FORMWORK.dyn from the list.

🚀 Step 3. Running and Configuring the Dynamo File

Set the following input values in the Dynamo Player.

• ⚙️ 'At start' Setting

  • First Run: Set to True.

  • Subsequent Runs: You must change it to False to prevent duplicate formwork from being created.

• 📏 'Level' Setting

  • Select the same Level as the target objects where the vertical/horizontal formwork will be generated. If the level is different, it may be created in the wrong location.

• 🧱 'Formwork Type' Setting

  • Select the FORMWORK types you created earlier for both vertical and horizontal formwork, respectively.

✨ Step 4. Automatically Generating Formwork

1. Once all settings are complete, click the [Run] button.

2. In the Revit view, drag your mouse to select the target objects where you want to create formwork.

3. After selection is complete, click the [Finish] button at the top left.

4. Verify that the formwork elements have been automatically generated matching the target objects!

📌 Notes & Precautions

• For consecutive runs (2nd time and beyond): As mentioned earlier, change the At start value to False to prevent duplication, then repeat the process: [Run] -> Select Objects -> [Finish].

• Manual Modeling: Depending on the modeling conditions or complexity, formwork may not be generated automatically in certain areas. This is rare, so simply checking for missing parts and modeling them manually will make it perfect.

💡 Tip: Since level or object settings can vary from project to project, we highly recommend testing this on a sample model first before applying it to an actual project.