A home printer, a copy shop and a projector all start from the same PDF; they differ in what you pay, how long you wait and how much room you need. A home printer costs the least to own and works tonight, but a dress takes 40 to 60 tiled A4 or US Letter pages and an hour of trimming and taping. A copy shop prints the whole pattern on one A0 or 36 × 48 in sheet with no assembly, for a fee per sheet and a trip. A projector costs the most up front and needs a fixed cutting spot, then removes paper from the process entirely.
| Feature | Home printer | Copy shop | Projector |
|---|---|---|---|
| Up-front cost | A printer you probably own | None | A short-throw projector and a mount |
| Cost per pattern | Paper, ink and tape | A fee per large sheet | Nothing |
| Time from PDF to cutting | 1 to 2 hours (print, trim, tape) | A trip, plus a wait for the order | Minutes once calibrated |
| Paper | 20 to 60 letter-size pages | 1 to 3 large sheets | None |
| Accuracy risk | Scale setting and taping drift | Scale setting at the counter | Calibration and keystone |
| Keeping the pattern | A taped sheet to fold and store | A large sheet to roll | A file, nothing physical |
| Space needed | A table to tape on | A table to lay the sheet on | A table under a ceiling or wall mount |
| Best for | Occasional sewing, small pieces | Large pieces, patterns you will reuse | Frequent sewing, a permanent sewing corner |
How does printing a PDF pattern at home work?
A home PDF is tiled: the pattern is cut into pages the size of your paper, A4 (21 × 29.7 cm) or US Letter (8.5 × 11 in), each with alignment marks at the edges. You print at 100 % scale, check the test square, trim one or two edges of each page, and tape the pages together in rows and columns. A skirt is often 20 to 30 pages; a long-sleeved dress 50 or more.
The method is slow but forgiving. You can print only the pages you need, reprint one that jammed, and print a second copy of a piece you want in two sizes. The main risks are the scale setting (most misprints come from "fit to page" being on) and drift when taping: an offset of 1 mm per page becomes 1 cm (3/8 in) across ten pages. The guide to assembling a tiled pattern shows how to tape in rows so the drift does not accumulate.
Most good PDFs skip empty pages and print a page map on the cover, so the count is lower than the tile grid suggests. Patterns that give waistbands and ties as cutting dimensions instead of printed rectangles save a few more pages.
When is a copy shop the better choice?
A copy shop or print bureau prints the A0 (84.1 × 118.9 cm, 33.1 × 46.8 in) or 36 × 48 in version of the pattern on a large-format printer, usually on plain or lightweight bond paper. You take the file in on a USB stick or upload it online, pay per sheet, and collect a roll. No trimming, no taping, and the pieces are in one piece, which matters for a long skirt or a wide-leg trouser leg that would otherwise cross twenty tiles.
The costs are the fee and the trip. Prices vary a great deal between shops, between countries and between plain paper and a heavier stock, so ask before you order, and ask for the engineering or "line drawing" rate, which is cheaper than a full-color poster rate. Check that the shop prints at 100 % and not "fit to paper", and measure the test square before you leave the counter. The copy shop printing guide lists what to say at the counter and which file to send.
A copy shop also suits anyone without a printer at home, and anyone who sews too rarely to own one.
What does projector sewing involve?
With a projector you skip paper altogether. A short-throw or ultra-short-throw projector is mounted above or beside your cutting table, pointed straight down at it, and shows the pattern at true scale on the fabric. You trace or cut directly along the projected lines with a rotary cutter or chalk. A projector file is a single-page PDF without tiling, laid out so that you can pan and zoom over it in a PDF viewer.
The one-time work is calibration: the projector must be perpendicular to the table, the image must be in focus across the whole surface, and a calibration grid must measure correctly at every corner. Done once, it holds as long as nothing moves. After that, a new pattern is ready as soon as the file opens. Marking darts and notches takes a little practice because there is no paper to pin through; most people chalk a dot at each notch and dart point before cutting.
Projector sewing needs a permanent spot: the projector is not something you set up and take down for each project, and the table underneath has to stay where it is. For the hardware and mounting options, see setting up a projector on a budget.
How do the three compare on accuracy?
All three can be accurate to a millimeter, and all three can be off by 5 % if one setting is wrong. The failure points differ.
- Home printer: the scale option in the print dialog, and taping drift. Check the test square on the first page, and check a second one on the last row after taping.
- Copy shop: the operator's scale setting. Large-format drivers also offer "fit to roll". The test square on the printed sheet is the only proof.
- Projector: calibration. The projected image can be slightly larger at one edge than the other (keystone) if the projector is not square to the table. A calibration grid with squares of 5 cm (2 in) across the whole surface shows it; measure the far corners, not just the middle.
Whichever route you take, the test square is the check. The post on why the test square matters explains what a 2 % error does to a waist.
How do they compare on cost over a year?
For one or two garments a year, the home printer wins even if you have to buy ink. For a garment a month, the copy shop fees add up, but so does the time spent taping; many people reach for the copy shop for big pieces and print small things at home. For someone sewing every week, a projector pays for itself within a year or two in paper and time, and the drawer of folded patterns disappears.
Sewly produces every one of these files from the same pattern on its paid plans: tiled A4 or US Letter with lettered and numbered pages and a page map, A3 and Tabloid for anyone with a larger printer, A0 and 36 × 48 in for the copy shop, and a projector file. Large plain rectangles are given as cutting dimensions to save paper on any of them.
Can you combine them?
Yes, and most experienced sewists do. A common mix is a projector for everyday cutting, with a copy shop print for a pattern you want to lend, mark up in pen, or keep a fitted copy of. Another is home printing for small pieces (a hat, a pouch, a collar) and a copy shop for the full skirt or trouser pieces. The printing guide covers the settings for each paper size.
Which should you choose?
- You sew a few times a year, or you are starting out: print at home. The cost is low, nothing has to be set up and you learn to read a pattern while taping it.
- You have no printer, or the pattern has long pieces: use a copy shop. Ask for the A0 or 36 × 48 in file, confirm 100 % scale and measure the test square at the counter.
- You sew often and have a table that can stay put: a projector. The calibration takes an afternoon, then every pattern after that is ready in minutes and uses no paper.
- You want to keep a fitted pattern for years: a copy shop sheet, rolled, or a home print traced onto pattern paper. A projector file is easy to keep, but the fitting notes you write on paper are not.
- You are unsure: start at home, try the copy shop for the first big project, and consider a projector once you know you will keep sewing.