Updates and release notes.

Multi-part downloads arrive as separate objects

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A multi-part model reaches your slicer as separate objects, one per part, when you use the 3MF or OBJ downloads. An STL is one welded mesh.

Parts that touched each other used to be exported as open shells, and slicers dropped layers from them. That hit 32 of the 60 newest multi-part models. Every object in the file is closed and printable now. Separate parts come through as their own objects, parts that touch come through as one object per connected piece, and part colours still come through, with Bambu Studio keeping them.

Measuring tools in the viewer

The build plate carries X, Y and Z axis letters, and a FRONT label marks the front edge. Press the ruler button and the viewer draws dimension lines on the model like a technical drawing, or on a single part when you select it. A size chip in the bottom-left corner shows the size of the model or of the selected part, and switches between millimetres and inches.

If you're signed in, your unit choice (inches or millimeters) is saved and follows you to your other devices. A DIMENSIONS list dropdown summarizes the model's key measurements, each with a short description. Printy sees the measured size of the model and of each part after every build, including whether an edit changed any of them, and she knows which side of the model you're looking at.

A new engine for builds

Printy builds your model with a new engine, and the difference shows in the numbers: builds are faster and model files come out 4.5–6.4× smaller, so downloads and previews load quicker. Publishing a large model from a phone used to fail; it holds up now.

About half of all builds already run on the new engine. It runs alongside the old one for testing before everyone moves across, and it makes room for things Printy couldn't do before.

Save as a new copy brings the whole build

Save as a new copy takes the model, the conversation and the build history along with it. Because she has the whole history, Printy's next edit on the copy lands where you meant it.

That makes it the way to branch an idea without risking the original, or to try variants safely.

Name the part you want changed

Models come back split into named regions, each shown in its own colour in the viewer, so you can point at the piece you want changed. Ask for things like "Make the handle thicker." "Round off the base." "Move the mount 10mm left."

If she hasn't labelled the bit you're after, ask her for more parts. The feature has an off switch as well: More Parts Mode, in the gear menu above the message box.

The beta program is open

New features reach beta members first, weeks before everyone else, and members get to influence them while they're still soft enough to change. Each beta feature has its own switch in the BETA OPTIONS menu at the top left of the preview, and members get a Beta Tester badge on their account. Places go to the people most invested in Printy: those building things, sending feedback and engaging with the team.

Two features are in the program to start. Attach an image lets you give her a photo, a sketch on the back of an envelope or a dimensioned drawing, and she works from the picture as well as your words. Printy Brain Candidate is a new brain for her, faster and often better on the first try, and still being tuned, which is why beta members get it early.

Printytron has a Discord

A place to see what everyone else is making, ask how someone got a tolerance right, and tell us what Printy should do next. Changes get announced there first, and the beta group hangs out there. It's small right now, which is when turning up counts.