Review requests: check an alternative before you use it

A review request is a second pair of eyes for a physical part (a pull request, if you know software). You try an idea as an alternative, and before it is used in the main design a teammate looks at it in 3D and says "approved" or "change this first". With Pro terms on, the alternative is called a branch and using it is called a merge.

Request a review

1. Work on an alternative and save a version of your changes (History → Try an alternative).
2. In History, choose Request review on the Review requests card.
3. Pick the alternative and where it should go (the main design by default), give it a title, and tick the teammates who should review it. They need the reviewer role or higher.
4. Optional: Write it with AI drafts the description from the alternative's versions and its changes. It costs a small number of AI credits; edit the text as you like.

Reviewers get a notification that opens the review.

What reviewers see

The review page shows:

• Compare in 3D: the alternative next to the main design as it was when the alternative started, with removed material in red and added material in green;
• the changes in plain words and numbers, such as "Width 90 → 104 mm" or "Weight 41.4 g → 45.8 g (+11%)";
• the versions on the alternative (click one to look at it alone);
• the discussion: Pin a comment on the 3D view to point at a spot, @mention people, reply and resolve;
• the activity: every approval, change request and note.

Approve or ask for changes

Reviewers choose Approve or Request changes, with an optional note, or just Comment.

• An approval counts for the version it was given on. If someone saves a new version on the alternative, the review goes back to Open until it is approved again.
• A request for changes keeps the review in Changes requested until that reviewer approves.
• You cannot approve your own review.

Use this alternative

When the review is Approved, editors see Use this alternative. It works the same way as in History, including the preview and the pick-a-side list when the alternative and the main design changed the same thing. Both histories stay, joined by a new version, and the review is marked as used.

Statuses

Required approvals (Enterprise)

Workspace admins on Enterprise can set how many approvals a review needs (1 to 5) from any review page. The rule applies to every open review in the workspace right away.

Try it

On an alternative with a change you are unsure about, choose Request review, tick a teammate and press Write it with AI for a first draft of the description. Then pin a comment on the spot you want them to look at first.