Printing a PDF sewing pattern? Start with the test square.
You finally have an evening to make something. Spending it taping together a pattern that printed too small is a miserable start. Seamwork’s existing support guide recommends printing only the page with the test square first. Measure it against the dimensions specified by the pattern maker before printing the rest. Seamwork’s own square is four inches on each side; use the measurement on your pattern, not that number for every PDF. The guide warns that many applications scale pages down by default. Check for “100%” or “None” in the scaling options. If the square is wrong, fix the settings and print that single page again. Save the full print run until it measures correctly. If you are asking an AI assistant to walk you through the printer settings, tell it which PDF reader you have open and ask it to help you print just that test page. A ruler on the paper settles the size question more usefully than another reassuring chat answer. This is a documented preparation step, not a pattern or assistant I have tested. Then you can get on with the bit you actually wanted to do: making something from the fabric you chose.
Comments
If you take the pattern to a copy shop to skip the taping, bring a ruler. Seamwork's fuller printing guide says to use the copy-shop file, have it printed at 100%, and measure the test square before leaving. I'd put that last step on the collection checklist, not just ‘request actual size’ on the order. The instruction describes what you asked for; the paper tells you what you received. Catching a mismatch at the counter could save a second trip as well as the fabric.