Use Weld when you want overlapping shapes or letters to become one cut shape; use Attach when separate layers must keep their canvas positions on the mat. Attach does not merge their geometry, and Weld does not preserve separate operation settings. For pen, score or foil details, Attach can fasten that operation to its cut layer.
The quick test is the result you need: one exterior cut outline means Weld; a deliberate arrangement of separate pieces means Attach. Cricut's current help pages describe both tools, including the irreversible nature of Weld and Attach's second use for positioning non-cut operations.
What is the difference between Weld and Attach?
- Weld changes the shape. It permanently joins selected overlapping objects into one layer. Where their cut paths intersect, only the exterior path remains.
- Attach changes how layers are sent. It holds selected cut layers in the positions you arranged on the Canvas when the project moves to the mat. The layers remain separate.
Grouping is different again: it organizes items on the Canvas but does not by itself hold their mat placement. If Design Space rearranges pieces on the Prepare screen, Attach is usually the operation to check. If the blade would travel along an unwanted seam between overlapping shapes, inspect whether those shapes need Weld.
Choose Weld for one continuous cut shape
Weld is useful for connected script lettering, a word whose overlapping letters should cut as one silhouette, or two shapes that overlap and should not leave an internal cut line. In current Design Space, select the overlapping layers and choose Combine → Weld on desktop (or Actions → Combine → Weld on mobile). Check the Layers panel afterward: the result becomes a single layer and the objects used in the Weld are no longer separately editable.
- Duplicate the design or keep an untouched copy before welding, especially when the source contains several colours or carefully spaced parts.
- Select only the shapes that should share one exterior cut boundary. Ungroup a layered upload first if needed so unrelated layers are not included.
- Use Weld only where the shapes overlap. If they merely touch at edges, zoom in and inspect the resulting outline rather than assuming the seam disappeared as intended.
- Review the new layer and cut preview. The colour may change, and objects may need to be placed back into their intended arrangement.
Cricut says its Combine actions can remain editable and can be undone; Weld is the permanent option. When you want a reversible union, consider Combine → Unite instead, and use Undo [action] from the Combine menu if you need to revert that Combine group. Do not use Weld as a substitute for Attach on multi-colour artwork.
Choose Attach to keep a layout or align another operation
Design Space may rearrange cut pieces on the mat to save material. If the positions matter—for example, separate small pieces that form a face, or lettering arranged over a card front—select the layers you want to preserve and choose Attach before Make It. The Prepare preview should show them in the Canvas arrangement.
Attach also fastens an operation such as Draw, Score, Foil, Engrave or Deboss to the cut layer it belongs with. Select the operation layer and its target cut layer, then Attach. For a multi-layered image, Cricut advises ungrouping first to avoid attaching every layer together. On the Prepare preview, confirm the pen or scoring line sits over the correct cut piece before continuing.
Three common mistakes to avoid
- Attaching script text and expecting one cut path: Attach preserves position; it does not remove the overlaps between letters. Weld (or an editable Unite group) is the geometry choice.
- Welding a multi-colour design: Weld turns the selected objects into one layer and can change the colour grouping. Weld only the shapes that should become one cut layer.
- Using Group to lock mat placement: Group is for Canvas organization. Use Attach, then inspect the Prepare screen before cutting.
If the machine seems to cut the same outline twice, Weld and Attach may not be the actual fix. Duplicate paths or a drawn outline can create that symptom; see the Cricut double-cut diagnostic. To make a deliberate single-line pen drawing, use the single-line drawing guide. If you are preparing layered vinyl artwork, Makerfern's layered SVG workflow keeps the colour layers as separate shapes.
Sources and date checked
- Cricut: Using Combine, Slice, and Weld to create new shapes in Design Space, edited 30 September 2024; accessed 28 October 2026. Source for Weld behavior, permanent merging, Unite and the current menu path.
- Cricut: How to use Attach in Design Space, edited 2 October 2024; accessed 28 October 2026. Source for preserving mat placement and fastening other operation types.
Before cutting, decide whether your goal is merged geometry or a preserved layout, apply the matching operation, and inspect the Prepare preview. That last screen is where you can catch a layout or operation mismatch before using material.
Makerfern's SVG checker can inspect an uploaded vector's structure in your browser; the SVG for Cricut guide covers file preparation. These tools do not change Design Space layers. Processing runs locally; see the processing details and free and Pro features.
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.