xTool Studio Desktop 1.9 adds a Corner Radius control for vector shapes, with Round, Inverted Round and Chamfer styles. Use it on a duplicate design, choose whether the whole object or selected nodes need a change, then check the actual cut contours and mating dimensions before processing. A softer looking corner can change the fit of a tab, slot or precisely placed opening.
xTool's Studio 1.9 release notes, updated 11 September 2026, document the three styles, an object-wide radius and node-level control points. They do not supply a universal safe radius, state how every imported compound path behaves, or establish a machine-specific cut result. This article is a documentation-based file review workflow, not a hands-on laser test.
What does the new corner control change?
Corner Radius edits vector geometry in Studio. Round replaces a sharp corner with a curve; Chamfer cuts a straight bevel across it; Inverted Round creates an inward curved corner effect. The exact visual result depends on the selected contour, so compare the original and edited shapes at high zoom. xTool says the control can apply to an entire object at once or be adjusted at individual nodes in node editing mode.
That distinction matters for a practical design. A display stand may have exposed outer corners that should be less sharp, while the tabs that hold it together must keep their intended profile. An object-wide edit can affect both. Selecting individual nodes gives you a way to confine the change to the visible corners, provided you inspect every edited edge afterward.
This feature is different from xTool's Offset operation, which makes an outline inside or outside a shape and offers its own corner style. Offset creates or changes a parallel contour; Corner Radius shapes corners of the selected vector. Neither operation measures your laser's kerf or proves that assembled parts fit.
Which corners should remain sharp?
- Mating tabs and slots: preserve their designed width and entry profile unless you intend to change the joint. Rounding an outer tab can remove contact area; rounding an internal slot may change the opening near its end.
- Registration and alignment features: small notches, keyways and reference points can lose their locating function when reshaped.
- Holes near an edge: a large radius or chamfer may reduce the wall of material between the opening and the outside cut.
- Decorative outer corners: these are often the best first candidates because their shape can be changed without reworking a mating edge, though you still need to check clearance and material strength.
A 4 mm radius on a small tag is a design choice, not a recommended setting. What matters is how much of the original profile it removes. If the feature is only 5 mm wide, even a visually modest corner change can consume much of it. Measure the smallest nearby wall and compare it with the original file before sending a job.
A careful Studio 1.9 editing sequence
- Save the untouched source. Duplicate the Studio project or imported SVG. Record its overall width and height so that an import or later edit does not hide a scale problem.
- Identify the operation layers. Separate cut outlines from engraving and scoring. Select the vector that actually carries the intended cut, not a decorative image behind it.
- Mark functional corners. Note tab ends, slots, hinge clearances, holes and registration notches before editing. For a box, compare the mating part as well as the visible outer edge.
- Apply one corner effect on the copy. Use the object-wide radius only if every corner should change. Otherwise enter node editing mode and adjust the intended corner control points. The release notes establish these modes; labels and placement can vary across Studio builds.
- Inspect all contours. Zoom in at corners, check for unexpected self-intersections or tiny leftover segments, and compare the edited silhouette with the original. Confirm that the object still has the intended number of closed cut paths.
- Review the processing preview. Check cut versus engrave assignments, physical size and the path the laser will follow. Frame the job on the machine using its normal safety workflow.
- Cut a small sample. Use the actual material for a fit or strength test before spending a full sheet. A screen preview cannot show char, grain, melting or the measured kerf.
If an imported SVG has many grouped objects, inspect selection before applying an object-wide change. Studio 1.9 also auto-merges same-style geometry on some complex imports. An unexpectedly broad selection can change more corners than intended. Keep the unmodified SVG so you can re-import if the grouping is wrong.
What if the rounded part no longer fits?
Compare the cut sample against the original dimensions and the mating piece. If the edited edge forms a joint, return to the original and limit the radius to decorative nodes. If an opening is too tight or too loose without any corner edit, measure the stock and kerf separately; the laser joint-fit guide gives a coupon method. Studio 1.9's Resize Slots control addresses recognized structural joints when material thickness changes. It is a different tool from Corner Radius and still calls for a test cut.
For a new plain box, Makerfern's browser-local laser box maker can generate the panels using your measured thickness and kerf. Its SVG export is free; DXF export is Pro. It does not edit an existing Studio file or predict the effect of Studio's corner control. The SVG checker can flag structural import risks in a source file, but cannot certify a joint or a machine setting. See how Makerfern processes files locally.
When should you keep the original corner?
Keep it when the corner is a measurement reference, mating surface or alignment key, or when the material sample has not yet confirmed a safe change. A smoother outline may be useful on a decorative edge, but the correct radius is the one that leaves the part functional on the actual material. Save the editable master and successful test dimensions together for the next run.
Sources and dates
- xTool Studio Desktop V1.9 release notes, updated 11 September 2026; accessed 3 October 2026. Source for the three styles and object-wide versus node-level adjustment.
- xTool Offset shapes guide, accessed 3 October 2026. Source for the separate offset control and its corner styles.
Makerfern's image processing runs in your browser. SVG export is free; some export and batch features require Pro. External software and materials have their own requirements. If something in this post is wrong or out of date, please tell us — the date at the top is the last time it was checked.