Drafted · Pinned · Cut
In testing · Invite onlySewing patterns drafted to your measurements.
Not graded up and down from a size chart.
Commercial patterns start from a fit model who isn't you, then get scaled to a size that also isn't you. Sloper Studio starts from your body and drafts the pieces from scratch, so the fitting happens before you cut, not after.
Access is invite-only while we test. Testers get free custom-fitted patterns and are compensated for feedback.
Every piece ships with the drafted seam line, the offset cutting line, grain and balance notches.
How it works
Three steps from a tape measure to a pattern you can cut.

Enter your measurements
Twenty-four fields, each with a guide showing exactly where the tape goes. Save a profile and reuse it for every garment.
Choose a garment and fabric
Pick from eight garments, then set your fabric: woven, stretch or knit. Ease, darts and seam allowances all adjust to match.
Print at true size and sew
Download a 1:1 pattern as tiled A4, full-scale A0, or a projector file, with seam allowances, notches and step-by-step instructions.
Want the detail on the drafting rules and where they come from? Read our methodology.
Where we actually are
The engine works and it drafts real patterns. What it hasn't done yet is prove itself in fabric on enough bodies. That's the part we're doing now, and it's the reason sign-up isn't open.
We'd rather tell you that than sell you a pattern that doesn't fit.
- Pattern engine live: eight garments drafting today
- Research-backed formulas, traceable to published drafting methods
- Print pipeline: tiled A4, full-scale A0 and projector output
- Sewing every garment ourselves to validate the fitin progress
- Open sign-up, after testing and not beforein progress

Every size · Every body
Real bodies prove the fit.
Free custom-fitted patterns, paid feedback, and a direct hand in the formulas. We especially need testers outside sample sizes.
Two ways in
Request a seat in the invite-only beta, or help us prove the fit and get free patterns while you do it.