Screenshots in long threads
A remark such as "this radius" needs a picture, an arrow and a reply. Nobody can check a size you did not think to show.
CUTL MBD Studio
Review a STEP model with customers and suppliers, without sending the file
Invite people to the live 3D model in their browser. They measure it, pin comments on the exact face and agree on the part, while the STEP file, the PMI and your drawings stay with you.
Sign-off by email loses the geometry
Parts still get agreed in screenshots, PDFs and long email threads. Each one shows only what the sender thought to show, and a file you send can travel further than you meant.
The full file leaves your hands
To let someone look, you send the STEP file with its exact geometry. Once it is sent, you cannot take it back.
Everyone sees everything
A supplier who quotes one bracket gets the whole assembly, including the parts that are none of their business.
Collaboration Available after registration
You and your client discuss the part together
Invite your customer in to look at the same part with you. Pin comments, talk through the assembly live and agree on it in one place, with no endless email threads. When everyone agrees, push it straight to quoting.
Share the model, not the file
Your client sees and discusses a view of the 3D model. The exact STEP file, the PMI and drawings are never sent to them and cannot be downloaded.
Invite clients in one click
Share a link: your customer opens the same 3D model in their browser. No CAD, no installs, no account hoops.
Discuss right on the model
Drop pins and comments on any face or edge. Talk through the assembly together, in real time, on the part itself.
Live shared view
Everyone sees the same model as you rotate, zoom and section it, like working around one table, online.
From discussion to quote
Once the part is agreed, send it straight to quoting: no re-drawing, no re-uploading.
Show only what they need
Hide assembly parts from one invitee, save the selection as a template and preview the model as they will see it.
From STEP file to agreed part
01
Upload the model
In the STEP viewer in your account, click Create and drop a .step or .stp file. CUTL processes it, usually within a minute, and opens it in 3D with its assembly tree.
02
Invite people
In the Social panel, click Invite collaborator, enter a name and an email address and set the date access expires. Tick Hide on any part this person should not see.
03
Talk it through on the model
Click a face or an edge to pin a comment there, or post one about the whole model. Threads update live, and you reply, resolve and reopen them.
04
Settle the next version
Upload the changed model with Upload new version and a short note. Older versions stay read-only. For an assembly, the Quotation tab of the same review prices it.
You decide who sees what, and for how long
Bring people from outside your team into the model and keep control of it.
Sign in with a one-time code
An outside invitee opens the email link and confirms with a 6-digit code sent to the same address. No password and no CUTL account. A person who has a CUTL account opens the review from it.
Access with an end date
Every invitation expires on the date you set. Revoke a person at any time or send the invite again. A revoked person can be invited later and starts over with a fresh code.
Hidden parts leave no trace
A hidden part or sub-assembly is absent from that invitee's tree, 3D scene, parts list, comments and emails. Nothing on their screen says anything is missing.
Templates for the next supplier
Save a hidden-parts selection with Save as template and pick it for the next invitee. Editing a template later does not change anyone already invited.
A new version never shows more
If a new version no longer contains a part an invitee had hidden, CUTL pauses that access until you confirm what stays hidden.
Invitees check sizes themselves
Invitees rotate and measure the live model and see weights read-only. They cannot download the STEP file, create drawings or open the PMI panel.
For teams that agree on parts with people outside
Sheet-metal job shops
Check a customer's model with them before you quote or cut. Each question sits on the face it is about, and the answer stays with the model.
Engineers and designers
Show a design to a customer or a supplier without handing over the STEP file. Each person sees only the parts they work on.
Purchasing
Give each supplier the parts they quote and nothing more. Save the selection as a template and reuse it for the next supplier.
Questions about STEP model collaboration
Collaboration is free: invitations, comments and visibility templates cost no coins. A STEP model in your account costs 100 coins for a single part and 200 for an assembly, and a new account gets 10,000 coins free. The public STEP viewer, without an account, is free as well.
No. An outside invitee opens the model in the browser from the email link and confirms with a one-time code. There is nothing to install and no CUTL account to create.
No. Invitees see a view of the model and take part in comments. The exact STEP file, the PMI and drawings are never sent to them. A DPA and an NDA are signed on request.
Administrators of the team that owns the review. Other team members can view and comment, but they do not see the invite button or the list of reviewers.
Upload the changed model as a new version with a short note. Comments stay with the review and older versions stay available read-only. Invitees keep their access, unless a part hidden from them is gone: then their access pauses until you confirm.
Review a STEP model with customers and suppliers, without sending the file
Invite people to the live 3D model in their browser. They measure it, pin comments on the exact face and agree on the part, while the STEP file, the PMI and your drawings stay with you.