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MBD seems to have disappeared.

CADNurdCADNurd Member Posts: 94 ✭✭

MBD seems to have disappeared.

Chrome Browser - running on a chromebook - same issue in an incognito window.

Screenshot 2026-03-06 19.50.03.png

Unemployed Onshaper - Operating on European time - More of me here ➤➤ https://linktr.ee/Liam.G

Comments

  • sebastian_glanznersebastian_glanzner Member, Developers Posts: 481 PRO

    Is the dimension from point to point? I think that does not work. You need to dimension line to line, or line to point.

  • Matt_ShieldsMatt_Shields Member, Onshape Employees Posts: 938 PRO

    The option to make a dimension tolerant will only show up if you are dimensioning something that can be measured in real life, like a diameter or the distance between two faces. In your example, don't dimension that bottom line. Dimension between the far left (100 mm) and far right (25 mm) lines and you should get the option to make tolerant. Because those two lines will become parallel faces after you extrude.

  • CADNurdCADNurd Member Posts: 94 ✭✭

    @sebastian_glanzner and @Matt_Shields - Yep. That was the problem. Was it set up like that from Day 1? I don't remember that happening when doing some testing last week.

    Unemployed Onshaper - Operating on European time - More of me here ➤➤ https://linktr.ee/Liam.G

  • sebastian_glanznersebastian_glanzner Member, Developers Posts: 481 PRO

    Glad it got solved, that happens a lot and there were some similar comments with the same issue.

    Maybe you made a rectangle sketch feature which works out of the box?

    It would be useful if Onshape just made the tolerance button gray and if you hover over it, it could tell you that the dimension selection isn't compatible with MDB.

  • CADNurdCADNurd Member Posts: 94 ✭✭

    No, I definitely don't remember it being this problematic. When I tried it first, it worked just like in the official sales pitch, which was that MBD was now a baked-in option when creating most sketch dimensions.

    Anyone else remember it like that?

    Unemployed Onshaper - Operating on European time - More of me here ➤➤ https://linktr.ee/Liam.G

  • CADNurdCADNurd Member Posts: 94 ✭✭

    So . . . maybe nothing HAS changed after all. Found this 11 day old comment . . .

    Screenshot 2026-03-07 14.19.59.png

    No mention in the video about this limitation, which is probably going to trip up a lot of people going forward.

    Unemployed Onshaper - Operating on European time - More of me here ➤➤ https://linktr.ee/Liam.G

  • Matt_ShieldsMatt_Shields Member, Onshape Employees Posts: 938 PRO

    No MBD behavior has changed since its release. The behavior in the video still exists.

  • nick_papageorge_dayjobnick_papageorge_dayjob Member, csevp Posts: 1,082 PRO
    edited 4:08PM

    Nothing changed. If you read through the new releases thread, people ran into the same thing on day 1 that it doesn’t work point to point.

  • Matt_ShieldsMatt_Shields Member, Onshape Employees Posts: 938 PRO

    Since this is a new feature, we should be clear about it's use. You really just need a dimension between two valid pieces of geometry. Point-to-point will work, just not a single edge.

    2026-03-09_12-19-39.gif
  • CADNurdCADNurd Member Posts: 94 ✭✭

    Ideally, when dimensioning an edge, the tool would be smart enough to rearrange itself when the 'make tolerant' gets invoked. Why would anyone care if their 'edge' dimension got automatically converted to point-to-point?

    Unemployed Onshaper - Operating on European time - More of me here ➤➤ https://linktr.ee/Liam.G

  • S1monS1mon Member Posts: 4,053 PRO

    I agree, this seems overly pedantic to disallow someone to dimension the edge length. Is there some good functional reason why this is the case?

    Simon Gatrall | Product Development, Engineering, Design, Onshape | Ex- IDEO, PCH, Unagi, Carbon | LinkedIn

  • Derek_Van_Allen_BDDerek_Van_Allen_BD Member Posts: 821 PRO

    I'd personally be mad about that. If my design intent is for an edge length, the point to point length is a different metric that doesn't match what I put in. Could lead to issues with sketch stability if I go back and modify things or change constraints assuming it was dimensioned with one and not the other. In the case of straight lines on planes the two cases might appear to always resolve the same but the projects I work on are a magnet for nontrivial geometric cases and I would hate to find the cases where point to point and edge length dimension definitions differ from one another fundamentally without trying to start myself on that path intentionally.

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