Three formats dominate digital sewing patterns, and confusing them is a common and costly mistake. PDF, PLT and DXF look like alternatives but they are really specialists, each built for a different stage of the journey from design to cut cloth. Using the wrong one wastes time and risks scale or data errors.
This article lays out what each format is good at, where each falls short, and a simple rule for which to reach for at any moment. Once the roles are clear, the formats stop competing and start cooperating.
PDF: the universal viewer and printer
PDF is the format anyone can open and print. It is vector at its core, so the geometry is scale-accurate, and it comes as large-format A0 sheets, tiled A4 or Letter pages, or layered files where you toggle your size. It is the ideal proof and the most accessible route to a paper copy.
What PDF does not do is editing. You cannot grade, restructure or re-nest a PDF in any practical way. It is an output and a reference, not a working CAD document.
PLT: the direct line to a plotter
PLT carries plotter commands, usually HPGL, that drive a pen or cutting plotter directly. It bypasses design software entirely, which removes any chance of an intermediate program rescaling the geometry. For driving a plotter, it is the most reliable choice.
PLT is not for viewing or editing. It describes machine motion, not pattern structure, so reach for it only at the output stage when a plotter is the destination.
DXF: the editable CAD exchange
DXF is the working format. In the apparel AAMA or ASTM conventions, it carries pieces, internal lines, grainlines, notches and grade rules, and it imports into the major CAD systems and into 3D tools like CLO3D. When you need to edit, grade, re-nest or simulate, DXF is the format that holds the necessary intelligence.
DXF is overkill for someone who just wants to print at home, and it requires CAD software to use fully. Its strength is exactly that depth, which is wasted unless you have a system to open it.
A simple rule of thumb
- Viewing or printing a pattern: use the PDF
- Sending to a cutting or pen plotter: use the PLT
- Editing, grading, nesting or 3D simulation: use the DXF
- Unsure: start with the PDF to understand the pattern, then move to DXF or PLT for production
Pro tip
Think of the three as a relay, not a race. The PDF proofs the design, the DXF does the work, and the PLT delivers it to the plotter.
Why one format is never enough
Because each format serves a different stage, a single format leaves part of the workflow stranded. A PDF cannot be graded; a DXF cannot be printed at a copy shop without conversion; a PLT cannot be edited. Professionals keep all three so no stage requires re-sourcing the pattern.
The cost of holding three files is trivial; the cost of missing the one you need at the cutting table is not.
How Minerva delivers all three
Minerva Patterns delivers every pattern as DXF AAMA, PLT and PDF in a single purchase. The DXF AAMA file is your editable, gradable, simulation-ready master; the PLT drives your plotter; and the PDF is your portable proof and home or print-shop output.
Having all three from the start means you never have to convert under pressure or hunt for a missing format. You can browse the catalog, download once, and use whichever file the current task demands.
Frequently asked questions
Can I just use PDF for everything?
Only for viewing and printing. PDF cannot be graded, re-nested or simulated, so production and editing need DXF, and direct plotting needs PLT. PDF is the proof and the print copy, not the working CAD file.
What format do I need to edit a pattern?
DXF, in the apparel AAMA or ASTM convention, opened in pattern CAD software. It carries the pieces, grainlines, notches and grade rules required to edit, grade, nest and simulate, which PDF and PLT do not.
Which format goes to a plotter?
A PLT drives a plotter directly with HPGL commands and is the most reliable for true-scale output. An A0 PDF also works for large-format printing, but PLT avoids any intermediate software that could rescale the geometry.
Minerva Patterns
Made-to-measure digital patterns, ready to cut
Every pattern is graded to your measurements and delivered as DXF AAMA, PLT and PDF files for cutting, plotting and 3D workflows.
Browse the catalog