Brother ScanNCut applique: from SVG to FCM and back to the embroidery machine

The ScanNCut has a real advantage over other cutters for applique: it is made by an embroidery-machine company, it reads Brother's own embroidery formats, and the SDX models can cut applique pieces straight from a PES file. That makes the question "why use a separate cut file at all" a fair one. This guide answers it, and covers the plain SVG route through CanvasWorkspace for the times you want control over the allowance.

If you are new to how the three colour blocks of an applique file work, read placement, tack-down and satin first. The whole cutting workflow depends on the first block being a placement run on the shape outline.

Two routes to a cut piece

| Route | Where the outline comes from | Allowance control | Works on | | --- | --- | --- | --- | | Built-in embroidery applique feature | The machine reads the PES, PHC or PHX file and detects the stitch line | Machine decides; you choose which parts to cut | ScanNCut DX SDX225 and SDX325 (check your model's spec page) | | SVG through CanvasWorkspace, saved as FCM | The studio's cut file, offset outward from the placement run by a chosen allowance | Per shape, 0.2 to 1.0 mm, verified against a printed template | Any ScanNCut that accepts FCM, including CM models |

Brother's product page for the SDX225 describes the first route: the machine "reads PES/PHC/PHX applique data from a USB memory stick", you "customize the PES/PHC/PHX file by selecting only the parts you want to cut", then take the cut pieces to the embroidery machine to tack down (Brother SDX225 product page). The SDX325 page lists the same supported file formats, "PHX, PHC, FCM, PES, SVG" (Brother SDX325 product page). Entry-level SDX models and the older CM series do not list PES reading, so check the spec sheet for yours.

When to use the machine's own PES reading

Use it when all of these are true:

• Your design is a PES, PHC or PHX file (a DST or JEF has to be converted first; see embroidery file formats).
• The design is a simple applique with one or two pieces and no stacked layers in the same colour.
• You are happy with the piece cut on, or very close to, the placement line, with the machine's own handling of the edge.
• The fabric is a stable fused cotton or felt where a small allowance error is forgiven by a 4 mm or wider satin.

The convenience is real: no computer, no conversion, one USB stick. The limitation is that the machine is finding a stitch line in a file that may have several outlines on top of one another, and you are trusting its guess. On a design with a placement run, a tack-down inset by about a millimetre and a satin, there are three candidate paths within 2 mm of one another. If the machine picks the tack-down instead of the placement run, the piece comes out about 1.2 mm small all round and the raw edge sits under the inner rail of the satin.

When to use a separate cut file instead

Use the SVG route when you want any of:

• A chosen allowance. The studio tests offsets from 0.2 to 1.0 mm outside the placement run and picks the one with the highest predicted clean rate for that shape; on a 4 mm satin and woven fabric that is usually 0.5 to 0.8 mm. The trade-offs are in choosing a cut allowance.
• A printed check. Every download includes a 1:1 template with a 100 mm scale bar so you can lay the cut piece on the drawing before hooping anything.
• The same cut file for a friend's Cricut or Silhouette. The SVG is the same for all three; only the size attributes differ (inches for Cricut, mm otherwise).
• A design your ScanNCut cannot read: a DST from a commercial digitiser, a JEF, an EXP. The cut file from an existing design tool recovers the outline from any of those.
• Multi-piece designs that must be laid out exactly as stitched. The cut SVG places every piece at its stitched position on one sheet, with a 5 mm margin, each as its own object.

Importing the mm SVG into CanvasWorkspace

The cut file is an SVG with one user unit equal to one millimetre, width and height stated in mm, each piece as a single compound path with an even-odd fill rule, a 0.1 mm black stroke and no fill. Choose the "ScanNCut" target in the download menu. It keeps mm; the "Cricut" target switches the size attributes to inches, which CanvasWorkspace would also accept but there is no reason to use it here.

1. Open CanvasWorkspace (desktop or web) and start a new project. Set the mat size to match the mat you will use, 12 by 12 or 12 by 24 inches.
2. Import the SVG. It arrives at the size written in the file. Select it and read the width and height in the object panel; they should match the size shown in the studio to within 0.1 mm. If they do not, the file was edited and re-saved in another program on the way, so re-download it.
3. Do not scale, weld or offset. The allowance is already in the path. An extra offset in CanvasWorkspace doubles it.
4. If the design has counters (the inside of an A, O, B) confirm they show as holes, not solid. CanvasWorkspace honours the even-odd rule in our export; if something looks filled, it was ungrouped and the rings separated. Re-import rather than fix by hand.
5. Save. CanvasWorkspace saves as FCM for transfer, by USB stick, by wireless transfer to a machine registered to your account, or by the ScanNCut Online activation on older models. Check the machine's manual for which of those yours supports.

On the machine, load the FCM, place it on the mat preview where your fabric is, and do not use the machine's own "size" screen to change it. If you must move it, moving is fine; scaling is not. A quick sanity check: the machine shows the design size on the load screen, and that number should be the placement size plus twice the allowance. For a 100 mm heart with a 0.6 mm allowance, expect about 101.2 mm.

Fabric, backing and support sheets

Brother sells two sheets for fabric on a ScanNCut, and they do different jobs.

| Sheet | What it does | Stays with the piece | Best for | | --- | --- | --- | --- | | Iron-On Fabric Applique Contact Sheet (CASTBL1) | An "iron-on permanent sheet for back of fabric"; you fuse it, then cut, then peel and fuse to the garment | Yes | Applique pieces that will be satin-stitched | | High Tack Adhesive Fabric Support Sheet (CASTBL2) | Adhesive sheet applied to the mat so unbacked fabric holds during the cut; "apply sheet with adhesive area on the mat" | No | Quilt piecing, pieces you want left raw |

Brother's own notes: the iron-on sheet is "not for use on textured fabrics that cannot be ironed" (Brother CASTBL1), and for patterns cut without a seam allowance the support sheet should be paired with the iron-on sheet (Brother CASTBL2). The Brother iron-on sheet is a fusible web with a paper carrier, functionally similar to HeatnBond Lite, and either will do: fuse to the wrong side of the fabric while it is still a rectangle, cut with the paper on, peel only when placing. The sewable grade matters, because the satin border has to stitch through it. Fabric and stabiliser covers which fabrics behave under a satin.

For felt and for very stable fused cotton, the high-tack support sheet on a standard mat, with no fusible, is enough to cut cleanly. For anything that frays or stretches, fuse first.

Blade and depth

Fabric is thin and soft, and the failure mode is a blade that goes too deep and drags, or not deep enough and skips at corners.

• DX machines (SDX series) use the Auto Blade and set depth from the material preset. Brother's Thin Fabric Auto Blade is "designed to cut fabric used for quilting and raw edge applique purposes" and is rated for fabric "from 0.25 mm to 0.5 mm" thick (Brother SDX225 product page). A fused quilting cotton sits in that range. Pick the fabric preset that names your material, cut a test, and only then touch the pressure setting.
• CM machines use a manual blade with a numbered dial. There is no universal number: the right depth depends on the blade's wear and whether a support sheet is under the fabric. Common practice is to start one step deeper than the setting you use for cardstock and test on a scrap, raising the depth until the piece lifts cleanly without cutting into the mat's adhesive layer. Check your machine's manual for the scale on your blade holder.
• Do a test cut of one piece and lay it on the printed template before cutting the whole sheet. A cut that is clean but 0.5 mm too small all round is a scale problem, not a blade problem, and it will show up here.

Cut speed matters less than most people think for fabric; if corners lift, slow it down one step, but check the fabric-to-mat bond first.

Alignment: matching the cut to the stitch

Everything above only pays off if the piece lands on the placement run. The template is the check for size; the embroidery machine's placement stitch is the check for position.

1. Print the template at 100 percent with no page scaling. Measure the 100 mm bar with a ruler; it should be 100 mm, not 97 or 103.
2. Lay your test piece on the template. Its edge should sit on the solid line, slightly outside the dashed placement line. That gap is the allowance.
3. Hoop the garment with stabiliser. Sew colour block one only: the placement run, a 2.5 mm running stitch on the outline.
4. Peel the paper carrier, centre the piece so an even sliver of fabric shows outside the stitched line all round, press down. A light mist of temporary spray adhesive on the back helps; two alignment marks (top and one side) help more. The prediction assumes 0.3 mm placement error with spray and marks, 0.5 mm without, 0.9 mm when rushing.
5. Sew colour block two: the tack-down, which runs 1.2 mm inside the outline so it lands on fabric. Then colour block three: the satin, 3 to 5 mm wide, with the outer rail pushed out by 0.25 mm on woven fabric to allow for pull-in.

If you own a Brother embroidery machine, the same workflow applies on a PE800, PE535 or SE600 in the 4 by 4 or 5 by 7 field; hoop fields and the PES details for those machines are in Brother PE800, PE535 and SE600 file format and hoops. Keep at least 3 mm between the satin's outer edge and the edge of the sewing field.

Problems specific to the ScanNCut route

| Symptom | Cause | Fix | | --- | --- | --- | | Piece is 1 to 1.5 mm small all round using the built-in PES feature | Machine picked the tack-down outline, not the placement run | Select only the first colour's outline on the machine, or switch to the SVG route | | Piece is the wrong size in CanvasWorkspace | SVG re-saved by another program without units | Re-download the ScanNCut target; do not resize | | Piece is double the allowance too large | Offset applied again in CanvasWorkspace | Remove the offset; the path already includes it | | Counters of letters cut solid | Rings separated after ungroup | Re-import the original file | | Corners lift or tear | Fabric not bonded to the mat, or blade too shallow | Brayer the fabric down; use the support sheet; raise depth one step | | Cut is clean but the satin misses the edge on one side | Placement, not cutting | Use the template marks; sew the placement run and re-place if off by more than 1 mm |

The Cricut and Silhouette guides cover the same workflow with their own quirks, and applique troubleshooting picks up the stitch-side problems: tack-down misses, gaps at points, and fabric showing past the satin.