Projector vs AR sewing patterns
There are now two ways to skip printing and taping a PDF pattern. You can project it onto the cutting table with a projector, or you can see it on your fabric through your phone with augmented reality (AR). Both put the pattern on the cloth at full size. They get there very differently, and each one suits a different kind of sewist. Here is an honest look at both.
How each one works
Projector patterns. A projector is mounted above the cutting table and shines the pattern file straight down onto the fabric. You calibrate it so one inch of light is one inch on the table, pick your size, and cut along the projected lines. Many designers now include a projector file with their PDF pattern: one large page, no tiles, made for exactly this.
AR patterns. An app uses your phone or tablet camera to find the fabric, then draws the pattern on it on screen, at the size it was drafted. The pattern is anchored to the fabric, not the screen, so it stays put as you move. You chalk the lines you see, then cut. Sttchr works this way on iPhone and iPad. See how AR pattern tracing works for the step by step.
Side by side
| Projector | AR on your phone | |
|---|---|---|
| What you need | A projector, a ceiling or wall mount, a laptop or cable to send the file | The iPhone or iPad you already have. A tripod helps. |
| Setup | Mount once, then calibrate. Recalibrate when the projector, table or zoom moves. | Scan the fabric for a few seconds. Size comes from the file, so there is nothing to calibrate. |
| Room light | Dim or dark. Lines wash out in daylight. | Bright. The camera wants the lights on. |
| Where it works | One table, under the projector | Any table, the floor, a class, a friend's house |
| How you cut | Cut straight along the light | Chalk the lines through the screen, then cut |
| Seeing the whole layout | Everything at once, on the table | One piece at a time, or the whole layout on screen with Trace all |
| Shadows | Your hands and head block the light as you cut | None. Nothing is shining on the fabric. |
| Pattern files | Projector files, or PDFs you convert | Projector files, PDFs and DXF |
Where a projector wins
- You cut directly. No marking step. Lay the fabric down and run the rotary cutter along the light.
- You see the whole layout at a glance, at full size, without looking through a screen.
- Everyone can see it. Handy for a class, or two people working at one table.
- It is great at volume. If you cut a lot of projects at the same table, a dialled in projector is fast.
Where AR wins
- No hardware to buy or mount. A sewing projector setup usually costs a few hundred dollars or more, plus a ceiling high enough to cover a whole piece. AR uses the phone in your pocket.
- No calibration. The size comes from the pattern file. Check it once against a ruler with the pattern's scale reference, see how to scale, and the app warns you any time you leave 100%.
- Lights on. You can work in daylight and see your fabric's true color while you plan.
- It goes where you go. Big pieces on the living room floor, a sewing class, a weekend away.
- No shadows from your own hands and head while you mark.
- Lines you can actually see. Pick a line color and weight that shows on your fabric, and tap a size in a nested pattern to make it stand out from the others.
The honest trade offs
A projector asks for money, space and a dark room, and it lives in one place. If any of those is a problem, it is a big one.
AR asks for an extra step: you look at the fabric through the screen and chalk the lines, rather than cutting under light. On a tripod that bends at an angle, both hands stay free and it feels natural fast. See how to trace. The camera also needs something to read, so plain, dark cloth in a dim room is the hardest case. Turn on a light and move the phone side to side, and if it still cannot find the surface, place the pattern yourself.
Your projector files work in both
You do not have to pick a side when you buy a pattern. The A0 projector file that comes with a PDF pattern is often the easiest file to trace in AR too, because it is one big page with no joins. If the file has a projector grid printed on it, Sttchr spots it on import, and Sttchr Pro can remove it so only your pattern lines are traced. See which pattern types are supported.
Which should you choose?
- Pick a projector if you have a dedicated sewing room with a high ceiling, cut a lot of projects at one table, and want to cut straight from the light.
- Pick AR if you do not want to buy and mount hardware, sew in a shared or small space, work in daylight, or sew in more than one place.
- Use both if you already own a projector. Keep it for the cutting table, and use your phone for everything that happens away from it.
Want projector style cutting without the projector? Read projector sewing without a projector, or see how Sttchr works as a sewing pattern tracer.
Try AR on your own fabric
Bring your projector files. Get Sttchr on your iPhone or iPad and trace your next pattern straight onto the fabric.
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