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HTV and vinyl: mirror image, cut lines, file specs.

Mirror HTV or not? 5000 paths on Cricut, 0.001 mm cut lines on Roland, Poli-Flex's 1 mm minimum size: what makers and cutter software ask of a file.

Sources read 2026-10-21 · updated 2026-10-26 · next re-read due 2027-01-19

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How the process treats your file

A cutter reads paths, not pixels. It follows vector outlines with a blade, and fills are ignored: Roland’s GR2-640 manual says cutting lines drawn in Illustrator use a 0.001 mm (0.039 mil) line width, with text and strokes outlined (Roland DG). Cricut Design Space refuses an SVG over 5000 paths (Cricut).

Solid HTV is cut mirrored (Siser, Specialty Materials, Cricut Auto Mirror); none of them says why. Printable HTV is printed unmirrored (Cricut), and Siser ANZ recommends optional TTD application tape for detailed or multi-piece designs (Siser ANZ).

Film thickness runs from 90 µm on EasyWeed (Siser) to 350 µm on Glitter, which the same page gives as 380 µm before application (Siser), and 650 µm on Stripflock Pro in standard colours (Siser). No source ties thickness to a minimum size. Minimums are stated per product: a 1 mm “minimum cutting size” on Poli-Flex Premium (Poli-Tape), and .07 to .25 on Stahls’ custom cut table, unit not printed (Stahls).

What the printers specify

Cutting area and print area

A Roland GS-24 has a 584 mm maximum cutting width, extendable to 604 mm depending on settings (Roland DG GS-24); Cricut Print Then Cut gives up part of the page to sensor marks (Cricut).

  • Roland DG GS-24 (maker): “Maximum cutting area Width: 584 mm(22 in.)* Length: 25000 mm (984-1/4in.)”; the width can extend to 604 mm (23-3/4 in.) depending on settings, but the pinch roller may then leave marks on the deliverables — Roland DG: Loadable Materials/Cuttable Area
  • Roland DG GS-24 (maker): “The cutting area spans the length between the two rollers, minus approximately 1 mm on each side.” — Roland DG: Loadable Materials/Cuttable Area
  • Cricut Design Space (software): part of the page is reserved for Print Then Cut sensor markings, so the cuttable area on a page “is not a full rectangle or square” — Cricut: How large can I Print Then Cut?
  • Cricut Design Space (software): maximum cuttable area for Joy Xtra, Explore, Maker and Venture is 10.62 in (26.98 cm) vertical by 7.2 in (18.3 cm) horizontal on an A4 sheet, and 9.94 in (25.25 cm) by 7.44 in (18.9 cm) on Letter; Joy 2 is narrower, 3.07 in horizontal on A4 and 3.19 in on Letter — Cricut: How large can I Print Then Cut?
  • Stahls’ CAD-CUT Custom Heat Transfers (platform): no multiple-image art files (gang sheets) for Custom Cut or Cad-Printz products — Stahls’: Custom Cut Heat Transfer Vinyl Logos & Designs

Resolution at print size

A vector cut path has no resolution; resolution matters for raster artwork and print-and-cut (Roland DGA). The two Roland DGA bullets come from an article dated February 16, 2010 about wide-format print/cut graphics, not garment HTV (Roland DGA).

  • Roland DGA (maker): “If you’re working with a vector image, resolution is not an issue.” For bit-mapped images, the original file’s resolution sets the limits on final print size and quality — Roland DGA: The Perfect Setup
  • Roland DGA (maker): image resolution in ppi “should be about 1/4 your desired dots-per-inch print resolution”; to print at 720 dpi, build the file at 180 ppi at actual size — Roland DGA: The Perfect Setup
  • Silhouette America (software): “SVG files need to be at the default rate of 72 DPI to retain their size.” The context is size retention when exporting or importing SVG in Silhouette Studio — Silhouette America Support: Importing and Exporting Troubleshooting
  • Siser EasyWeed (maker): not stated — Siser: EasyWeed data sheet

File format

Cricut takes .svg and .dxf as ready-to-cut vectors (Cricut); Silhouette’s free Basic Edition opens DXF, Designer adds SVG and PDF, and Business adds AI, EPS and CDR (Silhouette America).

Text and outlines

Three sources say the same thing: convert text to outlines or curves before it reaches the cutter (Roland DG, Cricut, Stahls’).

Colour mode and line colour

For a cut file the colour that carries meaning is the line colour: on a Roland GR2-640 green (R:0 G:255 B:0) marks a perforated cut (Roland DG).

Transparency and alpha

Cutter software can turn the edge of a transparent image into a cut path: Silhouette Studio opens transparent PNGs with auto-traced cut lines (Silhouette America).

  • Silhouette America (software): some PNG files have transparent backgrounds; Silhouette Studio opens them with auto-traced cut lines around the edges of the transparent image — Silhouette America Support: Business Edition Features
  • Stahls’ Artwork Uploader (platform): raster images often have a transparent background and vector images can sit on a coloured one; in both cases the sizing analyzer reads the entire background rather than the artwork shape. This applies to the sizing analyzer only — Stahls’ Blog: Getting Started with the Artwork Uploader
  • Roland DGA (maker): the Illustrator CutContour stroke is set to Weight .25 (unit not printed), Miter limit 1, Transparency Normal, Opacity 100% — Roland DGA: The Perfect Setup

White handling

In the sources read, white on printable HTV comes from the material: Cricut’s Dark-fabric Printable Iron-On carries an opaque white pigment (Cricut).

  • Cricut (maker): Printable Iron-On for Dark fabrics “has an opaque white pigment in the material”; the Light version uses a transparent material and suits light or white fabrics — Cricut: Printable Iron-On Instructions
  • Siser ANZ (maker): EasyColor DTV is printed on the white side, not the grey backing. This is a printing-side rule, not a white-ink rule — Siser ANZ: EasyColor DTV

Minimum line, text and cavity size

Three sets of figures turn up: Poli-Flex Premium’s 1 mm “minimum cutting size” (Poli-Tape), Stahls Asia’s 1.5 mm line thickness for lettering and logos (Stahls Asia), and Stahls’ per-material table, .07 to .25 for line or stem and .045 to .1 for cavities, unit not printed and inches inferred (Stahls). They are not like for like.

  • Poli-Tape Poli-Flex Premium (maker): “Minimum cutting size 1 mm (also depending on the font)”. The sheet does not define what “cutting size” measures — Poli-Tape: Poli-Flex Premium technical data sheet
  • Stahls’ Material Guidelines for Custom Cutting (maker): LINE/STEM THICKNESS .07 and CAVITIES .045 (units not printed, inches inferred) for 3M Reflective, Adhesive, Fashion-FILM Electric, Glow, Premium Plus, SportFilm Lite, Thermo-FILM, Thermo-GRIP, Reflective II, Soft Metallic, UltraWeed and UV Shift — Stahls’: Material Guidelines for Custom Cutting
  • Stahls’ Material Guidelines for Custom Cutting (maker): .085 line/stem and .055 cavity for Chroma Bling, Chroma Twill, Glitter Flake, Gorilla Grip II, Hologram, Reflective Glitter, Silicone Dye-Block, Soft Flock and Soft Foam (units not printed) — Stahls’: Material Guidelines for Custom Cutting
  • Stahls’ Material Guidelines for Custom Cutting (maker): .18 / .09 for Waterjet Film/Grip, Poly Twill/PST/Kiss Cut/Felts and Pre-Aligned Perma Twill; .225 / .09 for Twill/PST/Kiss Cut w/EMB and Sports-Stitch; .25 / .1 for AWAW/Logo SimStitch Kiss Cut — Stahls’: Material Guidelines for Custom Cutting
  • Stahls’ Material Guidelines for Custom Cutting (maker): uses its own logo as the example, a thick letter style that is small in height but can be cut in CAD-CUT Thermo-FILM or Gorilla Grip II because its line thickness and cavity size meet the cutting specs — Stahls’: Material Guidelines for Custom Cutting
  • Stahls Asia (maker; CAD-CUT Effect colour guide, “As of January 2021”): “maintain a line thickness of at least 1.5 mm (1/16“) for lettering and logos” — Stahls Asia: CAD-CUT Effect colour guide
  • Siser EasyWeed (maker): not stated — Siser: EasyWeed data sheet

Vectors and cut lines

How a line is marked as a cut depends on the RIP: VersaWorks looks for a spot colour named CutContour on a vector path (Roland DG VersaWorks 6); a GR2-640 reads lines of 0.001 mm (Roland DG GR2-640).

  • Roland DG VersaWorks 6 (maker): to count as cutting lines, paths must be vector data drawn in a spot colour named CutContour, registered in the application in advance; the name is case-sensitive. “Regardless of type and width, lines in raster data such as bitmap data cannot be recognized as cutting lines.” — Roland DG: Performing Cutting
  • Roland DGA (maker; Illustrator): the swatch name must be CutContour and the colour type Spot Color, with any colour values; Stroke Weight .25 (unit not printed), Miter limit 1, Transparency Normal, Opacity 100% — Roland DGA: The Perfect Setup
  • Roland DGA (maker; 2010, CorelDRAW): apply the CutContour spot colour with the Outline Pen at Hairline width — Roland DGA: The Perfect Setup
  • Roland DG Europe (maker; VersaWorks 6): a spot colour named PerfCutContour programs a perforated cut that also goes through the backing sheet — Roland DG: Cut Settings in VersaWorks Explained
  • Roland DG GR2-640 (maker): “When specifying a path as a cutting line, use a line width of 0.001 mm (0.039 mil).” — Roland DG: 1. Create the cutting data (Adobe Illustrator 2022)

Blade offset and tangential mode

These are cutter settings, not file settings; they sit here because they decide what a cut line does at a corner.

  • Roland DG Europe (maker): the blade swivels, so it sits slightly behind the centre point; “Most ‘standard’ blades have a value of 0.25mm but there are many specialist blades that differ.” — Roland DG: Cut Settings in VersaWorks Explained
  • Graphtec CE8000 (maker): when the blade tip sinks 0.3 mm or deeper into the media it is hard to rotate, and corners where two straight lines meet become hard to cut; tangential mode overcuts at corners before the tool lifts, with an overcut range of 0.0 to 0.9 mm — Graphtec: CE8000 manual, 7.1

Bleed and registration marks

Roland DGA suggests a 1 pt to 3 pt bleed to avoid white hairlines (Roland DGA); Graphtec scans a registration mark within 0.3 mm (Graphtec); Silhouette states a 1/16 in (1.59 mm) margin of error for Print & Cut alignment (Silhouette America). These are three different quantities: a bleed width, mark-scanning accuracy and whole-job alignment.

  • Graphtec CE8000 (maker): “Registration mark scanning accuracy when a designated registration mark is being scanned by this machine is within 0.3 mm.” — Graphtec: CE8000 manual, 5.1
  • Graphtec CE8000 (maker): registration mark line 0.3 to 1.0 mm thick, mark size 5 to 20 mm, shape pattern 1, 2, 3 or 4, a single line only; a double line cannot be used — Graphtec: CE8000 manual, 5.1
  • Roland DGA (maker; 2010): to avoid white hairlines and get a clean edge, add a bleed to the outside edges of the artwork; “Anything from a 1 pt – 3 pt line works very well.” — Roland DGA: The Perfect Setup
  • Cricut Design Space (software): bleed is “a small border of color added around each image that allows for more precise cutting”; recommended for best cut results, and it can be turned on or off in the print setup — Cricut: How to Print Then Cut in Design Space
  • Cricut Design Space (software): in the system print dialog, set margins from the top left of 0.5 in (1.27 cm; the page says 1.25 cm) to 1.5 in (3.8 cm), down and right. This is a printer setting, not a design margin — Cricut: How to Print Then Cut in Design Space
  • Silhouette America (software): Print & Cut jobs have a “1/16th inch margin of error” for cutting alignment compared to the printed image; the Print Bleed feature improves contour cutting results — Silhouette America Support: Print and Cut Troubleshooting
  • Siser ANZ (maker): for coloured garments, add a coloured bleed around the design “to help mask any minor misalignments during cutting” (EasyColor DTV) — Siser ANZ: EasyColor DTV
  • Stahls’ Artwork Uploader (platform; 2021, CAD-PRINTZ digital transfers): choose an outline colour, which may be added when part of the design is too small to cut — Stahls’ Blog: Getting Started with the Artwork Uploader

Colour count and path limits

Stahls’ custom cut orders take 1, 2 or 3 colours or layers (Stahls’); Poli-Flex layers standard colours up to 5 layers (Poli-Tape); Cricut caps an SVG at 5000 paths (Cricut).

HTV mirror image: mirroring and orientation

Solid HTV is cut mirrored; printable HTV is not mirrored. The sources give the instruction and not the reason (Siser, Cricut).

Layering and overlap

Siser’s layering rule is 15 seconds on the top layer only, with Glitter and Holographic always on top (Siser).

  • Siser (maker): overlapping HTV and carriers adhere to each other instead of the garment; trimmed, they no longer overlap and several colours can be applied at one time — Siser: 5 tips for layering Siser HTV
  • Siser (maker): a 4-colour design pressed for the recommended 15 seconds per layer gives the first layer a total of one minute; “Use the 15 seconds only for the LAST/TOP layer” — Siser: 5 tips for layering Siser HTV
  • Siser (maker): “Over baking HTV leads to shrinking HTV!” Short presses reduce shrinking, which matters for registration and alignment — Siser: 5 tips for layering Siser HTV
  • Siser (maker): the textured surface of Glitter gives no applicable area for HTV and can make it peel off after washing, so leave Glitter on top; the rule also applies to Holographic — Siser: 5 tips for layering Siser HTV
  • Stahls Asia (maker): “CAD-CUT® Effect is not recommended for multi-layer applications.” One product — Stahls Asia: CAD-CUT Effect colour guide
  • Cricut Design Space (software): Stacked creates a solid base layer that other layers stack on, best for iron-on (HTV), paper and vinyl; Sliced creates layers that fit together without overlapping, best for Infusible Ink — Cricut: How to upload images into Design Space
  • Dane Clement / GroupeSTAHL (Graphics Pro) (platform; article of 2023-07-26): after text is converted to outlines the letters overlap and must be united into one shape, or the cutter cuts around each piece — Graphics Pro: Using Shape Tools in the Pathfinder Panel for Vinyl Cutting

Where the sources disagree

Two pairs of figures read as a conflict until the scope is checked, and neither turns out to be one. They stay here because a reader meets both numbers and has to pick, and no page read sets one against the other.

Cut-line stroke: 0.001 mm or .25

Two Roland workflows give two stroke instructions. For cutting data in Illustrator the GR2-640 manual says: “When specifying a path as a cutting line, use a line width of 0.001 mm (0.039 mil).” (Roland DG). For the VersaWorks print/cut swatch, a 2010 Roland DGA article says to use “Weight .25; Miter limit 1”, unit not printed (Roland DGA). The sources do not show these two conflicting.

On the floor: the number follows the workflow, a cutter fed cutting data or a print/cut RIP reading a CutContour swatch. Take the stroke from the manual for the machine and RIP you send to.

Minimum size: 1 mm or .07 to .25

Poli-Flex Premium states a 1 mm “minimum cutting size” and does not define it (Poli-Tape). Stahls’ custom cut table publishes line/stem minimums by material from .07 to .25 (unit not printed, inches inferred; 1.78 to 6.35 mm) (Stahls).

On the floor: the figures are not like for like. Poli-Tape does not say whether its 1 mm is a line, a letter or a detail, and Stahls’ figure depends on the film. Take the figure for the material you order, from the maker of that material.

What fails on the floor

No case below comes with a photo or the file’s properties. They are text descriptions from help pages, a trade article and forum posts.

Overlapping letters cut into pieces

Symptom: the vinyl is cut into small separate pieces where it should be one. Cause in the file: text converted to outlines left as overlapping shapes instead of united into one. “If they are left as separate pieces, the software will read each path, and the cutter will cut around each shape” (Graphics Pro).

Doubled cut lines

Symptom: the cutter cuts the same line twice. Cause in the file, from two user answers on a cutter-supplier forum, 2010 and 2014: Live Trace’s default preset creates black and white paths stacked on each other (the 2010 reply suggests the One Color Logo preset), and Pathfinder Merge leaves unfilled objects in holes, where Unite does not (USCutter Forum, 2010, USCutter Forum, 2014).

Extra cut lines from overlapping objects

Symptom: a single line cuts as a double line and stray connecting lines appear. Cause, as answered in the thread (SignBlazer, 2016): several overlapping objects and strokes built for screen rather than a single cut path; the answer was union or difference into one object and no strokes. The asker’s project was an airbrush mask, not HTV (USCutter Forum).

Detail below the material minimum

No source read describes this failure on a garment. The evidence is a limit: Stahls’ custom cut table lists a minimum line/stem and cavity per material, from .07 to .25 and .045 to .1, unit not printed (Stahls).

Registration marks not read, cut drifts

Symptom: the cut is misaligned to the print. Cause in the file: on Silhouette, artwork falls into the registration-mark area, the “no print zone” (Silhouette America); on Cricut, a Print Then Cut project saved as PDF and printed outside Design Space gives incorrectly sized sensor marks (Cricut).

Cutter slices every internal element

Symptom: “My machine is cutting around each little element of my design instead of just the outer edge.” Cause in the file: a multi-layer Print Then Cut design grouped with Attach instead of Flatten (Cricut).

Rounded corners on text

Symptom: “curvy” corners on text or 90-degree angles. Cause: a blade offset in the RIP or cutter that does not match the blade (standard 0.25 mm), or a dull blade (Roland DG). This is a cutter setting, not a file fault. Separately, Graphtec says tangential mode helps corners when the blade sinks 0.3 mm or deeper (Graphtec).

Multi-layer stack shrinks or peels

Symptom: lower layers shrink out of registration, or the stack peels in the wash. Cause, in the press and the stack rather than the file: pressing every layer for the full 15 seconds over-bakes and shrinks the lower layers, and a textured Glitter or Holographic layer under other HTV makes it peel (Siser).

What shops ask on the forums

Two file questions came up in at least two threads since 2024. The quotes are the askers’ opening posts; replies are not used, and not every asker names HTV. All four threads are Reddit, from Cricut hobbyists, so this section reflects that audience and not a trade forum.

“Do I mirror printable iron-on, and what about the cut?”

“I didn’t mirror it I just put it directly onto the shirt and pressed it, Im assuming I had to mirror it” — Forum: printable iron on, October 2025. The asker pressed printable iron-on on a shirt and says white paper showed. Also asked in Forum: Iron on, December 2025, a printable iron-on front for a shirt: “Do i need to mirror? Also the cut? Kiss cut or die cut?”

What our sources say: “Do not mirror your design” for printable iron-on (Cricut); for Print Then Cut materials Auto Mirror is not applied (Cricut); solid HTV is the one cut mirrored (Siser). The sources give the instruction, not the reason. None says why white paper shows on the shirt, or whether to kiss cut or die cut.

“My uploaded picture is rejected as low resolution or comes out ruined in the cutter software. Do I need a vector?”

“is there anyway to bypass the low resolution thing?? does it actually ruin the cut if its low resolution?” — Forum: Please help, this annoying low resolution warning … iron-on printable paper, February 2026. The asker prints a shirt design on printable iron-on. Also asked in Forum: please help im about to lose my mind! Read body txt, February 2026, a drawing for a shirt: “if I upload the art to Adobe, make it vector then upload that to cricut will it work?”

What our sources say: Cricut takes .svg and .dxf as ready-to-cut vectors and can convert an uploaded raster image into layers (Cricut); Stahls requires “vectorized line art” (Stahls); a vector cut path has no resolution, in a Roland DGA article about wide-format print/cut graphics, not garment HTV (Roland DGA). None says what Design Space’s low-resolution warning measures or how to clear it, or how to trace a drawing into a clean cut.

Preflight before you upload

  • All cut lines are vector paths; lines in bitmap data cannot be recognised as cutting lines — Roland DG VersaWorks 6
  • All text is converted to outlines or curves before export — Cricut, Stahls’
  • Overlapping letters and shapes are united into one shape — Graphics Pro
  • No stacked duplicate paths: trace with a one-colour preset, and use Unite rather than Merge — USCutter Forum, 2010, USCutter Forum, 2014
  • Roland GR2-640 cutting data: 0.001 mm line width, strokes outlined, line colour not green — Roland DG GR2-640
  • VersaWorks print/cut: a vector path in a spot colour named exactly CutContour, case-sensitive — Roland DG VersaWorks 6
  • Cricut: 5000 paths or fewer and no pattern fills — Cricut, Cricut
  • File type matches your Silhouette edition (Basic DXF, Designer SVG and PDF, Business AI, EPS and CDR); a DXF is R13/LT95 with no groups or compound paths — Silhouette America, Silhouette America
  • Solid HTV is set to cut mirrored, and printable HTV is not mirrored — Siser, Cricut
  • Smallest line and cavity checked against the maker’s figure for the material (Stahls’ table .07 to .25 line, .045 to .1 cavity; Poli-Flex Premium 1 mm) — Stahls, Poli-Tape
  • Print-and-cut: bleed on, and no artwork inside the registration-mark area — Roland DGA, Silhouette America
  • Cricut Print Then Cut: multi-layer designs flattened, not attached, and printed from Design Space, not from a saved PDF — Cricut
  • Layer stack: Glitter and Holographic on top, 15 seconds on the top layer only, carriers trimmed close — Siser
  • Blade offset set to the blade in use (standard 0.25 mm) — Roland DG

Sources, checked on 2026-10-21

Forum threads

Could not check

  • www.siserna.com: blocked to the fetcher (HTTP 403); no row depends on it. Siser figures come from www.siser.com and siseranz.com.
  • specialtymaterials.com: blocked (HTTP 403); no row depends on it. The Specialty Materials instruction is read from the copy hosted by the distributor Specialty Graphics.
  • Graphtec CE8000 manual page CE8000-151-05-02.html: not found (HTTP 404); no row depends on it.
  • help.cricut.com: HTTP 403 to the fetcher on the page itself; the six Cricut pages were read through the help centre’s article API.
  • Roland DGA’s save format (.ps, .eps, .prn) and its other 2010 advice were not checked against the VersaWorks 6 or 7 manuals.
  • The Stahls material table and the Siser EasyWeed data sheet read cleanly only as rendered images; a reader opening them with a text extractor gets a garbled or column-ordered result.

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