Bambu Studio 2.8.0 Beta: Assembly Guides and Counterbore Bridging

Where the versions stand

Bambu Studio is the free slicer Bambu Lab ships for its printers. As of the June 2026 release notes on GitHub, the lineup looks like this: 2.7.1 Public Release arrived June 1 (bringing A2L support, Texture-to-Color painting and the Filament Manager to stable), a 2.7.1.62 maintenance build followed on June 16, and the 2.8.0 Public Beta landed June 25 with the new headline features. If you are new to the slicer, start with our Bambu Studio basics guide, then come back here.

Assembly guides: the slicer becomes a manual writer

The flagship 2.8.0 feature is a built-in assembly guide generator. Import a STEP file of a multi-part model and Studio splits it into assembly steps automatically, with visual guidance for how the parts fit together. You can edit which objects belong to each step through the object tree, switch between an X-ray view and a "show current step only" view for easier positioning, and add annotations (snap-fit markers, rectangles, free text).

The output options are the interesting part: one click generates an assembly walkthrough animation with a unified camera view and auto-layout, including exploded-view animation, and exports the whole thing to PDF, Markdown or MP4.

Why it matters: anyone who publishes multi-part models knows the documentation is the tedious half of the job. Screenshotting steps, arranging them in a document, keeping it updated after a revision. Generating that from the same file you slice collapses hours into minutes. For MakerWorld creators, print-it-yourself product designers and anyone shipping functional multi-part prints, this is the first slicer-native answer to "how do I explain the build."

Counterbore hole bridging: cleaner screw recesses, no supports

The second addition solves an old annoyance in functional printing. Counterbored and countersunk holes (the recesses that let a screw head sit flush) normally need supports, because the flat ring above the hole is pure overhang. The new "Counterbore hole bridging" option under Quality → Advanced offers three modes:

• None. Default behavior, no bridging applied.
• Partially bridged. Bridges only the overhanging ring region and leaves the center open. The screw shaft hole stays clear, the head recess prints clean.
• Sacrificial layer. Prints one full bridged layer across the entire hole as a base for the layers above. You punch or drill it out after printing.

This is a community contribution (credited to szc188 in the release notes), and it is the kind of quality-of-life slicing feature that makes functional parts noticeably cleaner with zero extra modeling work.

Smaller 2.8.0 improvements worth knowing

• Better timelapse videos on all printer models. The toolhead landing point is optimized so the camera does not shake between frames, and the head parks farther from the camera to avoid blocking the shot.
• H2D additions. A foreign object detection toggle, enhanced curve-planning support and improved circular hole compensation for the H2D. Requires printer firmware 01.03.50.00 or newer.
• Smarter flushing volumes. The auto-calculated flushing matrix now accounts for switching between official material types, for example raising the flush volume between PLA and PETG to prevent weak interlayer adhesion.
• SpaceMouse Pro Wireless Bluetooth support for 3Dconnexion users, plus a batch of bug fixes (copy-paste of part settings, color information loss in G-code from older Studio versions, a MakerWorld file-open crash).

And the stable branch: what 2.7.1.62 fixed

If you stay on stable releases, the current build is 2.7.1.62 from June 16. Its main job was fixing a startup slowdown on certain macOS versions, a known issue that 2.7.1 shipped with (UI lag and climbing memory use on macOS 26.5 and later, related to the built-in WebView). The maintenance build also fixed a path planning error in cross-Z-height coloring, a Device page crash and a UI flicker with the X2D filament track switch. macOS users on 2.7.1 should take this update.

For what the 2.7 generation added feature-wise (Texture-to-Color painting, gradient color curves, mesh repair improvements), see our earlier Bambu Studio 2.7 article.

Should you install the beta?

Honest answer: only if one of the two new features solves a problem you have today. The assembly guide generator alone is worth the beta for model publishers. For everyone else, the usual beta rules apply, and there is one concrete limitation: 3MF files saved in the 2.8.0 Beta temporarily cannot be uploaded to MakerWorld. If publishing to MakerWorld is part of your workflow, keep the stable release installed alongside the beta or wait for the 2.8.0 public release.

Beta and stable can coexist if you are careful about which one you save project files in. As always, confirm your regular projects slice correctly before committing a long print to a new build. Version numbers and dates in this article are as of the June 2026 release notes; check the in-app updater or the GitHub releases page for the current build.