I put off using a longarm service for years, partly out of stubbornness and partly because I didn't know what I was supposed to hand over. The first top I sent went out folded, unsquared, with a backing an inch too narrow on one side, and it came back with a polite note and a slightly higher bill. Nothing about the process is complicated once you've done it, but almost all of it happens before the quilt leaves your house. Here's what a longarm quilter actually needs from you, and what to ask before you commit a top you spent three months piecing.
What a frame does that your dining table can't
A longarm is a large machine head that travels on a frame while the quilt stays still — the exact reverse of quilting at home, where the machine is fixed and you shove the quilt around under it. The three layers are never basted together. Backing, batting, and top load onto the frame separately and are held under even tension by rollers, which is why a longarm can hold a queen-size quilt perfectly flat while a home machine is fighting the weight of it in a throat the size of a shoebox. That tension is the whole advantage, and it's also the reason your preparation matters: the frame holds what you give it flat, but it cannot invent flatness that isn't in the top.
This is skilled work in its own right, not a printing service. The National Quilt Museum in Paducah, Kentucky gave a 2023 exhibition, Showstopper, to Marilyn Badger, who hand pieced her first quilt in 1978 and went on to a long competition career and to teaching longarm classes across the United States, Canada, Australia, and Japan, becoming known as a pioneer in the longarm industry. When you send a top out, you're hiring someone's judgment about design and density as much as their machine.
The backing is the part people get wrong
Nearly every longarm quilter asks for a backing at least four inches larger than the top on all four sides, and plenty ask for six or eight. That margin isn't waste; it's the fabric the clamps and leaders grip, and it's the room the quilter needs when the top shifts slightly as the layers roll. Cut the batting to the same size as the backing. If your backing has to be pieced from standard-width yardage, take the selvages off before you sew the lengths together — selvage doesn't stretch the way the rest of the fabric does, and leaving it inside a seam puckers the back once the quilt is under tension. Press those seams flat, then square the backing so its corners are actually square, because a backing loaded crooked will pull the whole quilt off-grain as it rolls.
Flat matters more than pretty
The single most common problem a longarm quilter reports is a top that won't lie flat, and borders are usually the culprit. Fullness you could ease away with pins while basting at home has nowhere to go on a frame — the machine will quilt it in as a tuck, or the quilter will call you and the quilt will sit until you answer. If your borders ripple, fix them before the quilt goes anywhere; I walked through the measuring method in borders that lie flat. Then press the top well, check that every outer seam is secured so it can't pop under tension, and turn the top over and clip any dark thread tails floating behind light fabric, because they will shadow through once the quilt is layered and lit.
Edge-to-edge, semi-custom, and custom
Most services price in three tiers. Edge-to-edge, sometimes called a pantograph, runs one continuous design across the whole quilt at a single density and ignores block boundaries; it's the fastest option and the cheapest per square inch. Custom quilting treats each area separately — different fills in blocks, sashing, and borders, often with ruler work and stitching in the ditch — and costs several times as much because it takes several times as long. Semi-custom sits between them, typically an all-over design with the borders treated differently. Pricing is nearly always quoted per square inch, so multiply your top's length by its width and ask for the rate rather than a flat number, and ask whether batting, thread, and any needed backing seaming are included or billed separately.
Talking about thread and density
Be specific about what you want and honest about what you don't know. Thread color is the decision that changes a quilt's look the most: a thread matched to the background disappears and lets the piecing speak, while a contrasting thread turns the quilting into a visible second design. If your top is high contrast, ask what the quilter would use, and ask to see the thread against an actual block rather than deciding from a photograph. Density is the other conversation. Denser quilting makes a stiffer, flatter quilt and costs more; an open design leaves a softer, loftier one. Tell the quilter how the quilt will be used — bed, wall, or toddler — and let that drive the density rather than picking a design purely on looks.
Questions to ask before you book
Ask what turnaround they're quoting right now, because good quilters book out and the weeks before a show or the December holidays are the worst time to discover that. Ask whether they supply batting from a roll, which is usually cheaper and wider than packaged batts, and what fibers they stock. Ask what they charge for extra services — squaring a wonky top, seaming a backing, or removing a stray pin — so nothing on the invoice surprises you. Ask whether they return the quilt trimmed or untrimmed. And ask what they'd suggest for this particular top, then listen; a quilter who has loaded a thousand quilts will see things in your piecing that you stopped noticing weeks ago.
What to check when the quilt comes home
Unroll the quilt and look at the back first, in daylight. You're checking that tension looks even, with no loops of top thread lying on the backing and no bobbin thread pulled up to the front. Then check density across the whole surface: an all-over design should be reasonably consistent, without one corner noticeably tighter than the opposite one. Look for tucks along the borders and at any seam intersection that was bulky. If something's wrong, say so promptly and politely — a professional would rather fix it than have you quietly not come back. Then put both names on the label, yours and theirs, because the quilting is half of what people will see.
My drop-off checklist
Before a top leaves my house I run the same short list. Borders measured through the middle and lying flat. Top pressed, outer seams secured, dark threads clipped from the back. Backing pieced with selvages removed, seams pressed, squared, and cut at least four inches larger than the top on every side, with batting cut to match. A note pinned at the top edge marking the orientation, and a second note with my name, my phone number, the finished measurements, and one sentence describing the quilting I'm after and how the quilt will be used. Everything folded, not crushed, and the backing folded separately so it doesn't arrive wrinkled into the top. That list takes an evening, and it's the difference between a quilt that gets loaded the day it arrives and one that waits on a shelf for a phone call.