STL → relief slices → optional locating rails → laser-ready SVG/DXF
Choose Load STL or drag an STL into the preview. Use Rotate for simple 90° turns. If the model has a suitable flat rear surface, choose Pick back face, move over the model until the required surface is highlighted, then click it. For models without a suitable flat back, use Advanced → Back surface → Cut with plane.
Set the required model width and height. The calculated third dimension is shown as Depth and updates after rotation, resizing or changing the depth scale. Enable Panel Area when you want a finished rectangular area around the relief. The first panel size is based on the oriented STL with approximately 10% extra width and height. Panel width and height can then be changed independently or with the panel aspect ratio locked.
Choose vertical or horizontal slats, the centre-to-centre spacing and material thickness. The preview shows the actual material thickness. For a relief panel, minimum fin depth/backing is added behind the STL relief; it does not reduce the relief depth. Choose Freestanding / full model to create complete cross-sections without a flat backing. Set fin spacing equal to material thickness if you want the slices to touch. If one slice position contains separate pieces, all pieces are retained and labelled together, for example 001A, 001B and 001C.
Choose Plain straight back if you do not require a generated mounting system. Slotted mounting rails creates 2 to 5 interlocking rails. Solid slotted back panel uses the raw STL cross-sections, adds locating tabs to those slices and creates a matching backing board; it does not add straight backing slats. A back face must first be specified with Pick back face, or created with Cut with plane. The backing board can be rectangular or follow the STL outline. Choose a maximum of 2 to 5 tabs per slice. The app uses 2 or 4 straight tab rows across the model. Each slice receives a tab only on rows that pass through sufficient usable rear-edge material, so shorter slices may use fewer tabs without moving the row positions. Changing model size, position, orientation or slice spacing automatically regenerates its slots. Adjacent touching slots are merged where they form a continuous run.
When enabled, the export includes a small joint test using the current material and fit settings. Rail mode tests the rail joint; Solid slotted back panel mode tests a sample tab and backing-panel slot. Cut the test first before committing the full job.
Under Advanced, enter the usable sheet width and height. The app places parts within that area and creates additional numbered SVG sheets when required. Use Save as SVG or Save as DXF. SVG uses red paths for cut geometry and blue paths for part numbers/rail labels. DXF places the same geometry on CUT and MARKS layers. The marking layer can be engraved, scored or disabled in software such as LightBurn.
Slats are numbered 001, 002, 003 and so on. Freestanding slices that contain more than one separate piece use suffixes such as 001A, 001B and 001C. Rails are labelled R1, R2, R3 and so on. Numbering is automatically reduced or moved outside with a short leader line when a part is too small to contain it. In SVG exports each cut part and its marking are grouped together, so drawing software that preserves SVG groups can move them as one item. Keep the parts in order and insert the slats into the matching rail slots.
Note: Always check the SVG dimensions and fit test before committing a full sheet of material.