Measurement-based drafting: Ensures patterns are tailored to individual body measurements for perfect fit
Dartless design: Provides smooth contour and flexibility for garments requiring precise movement
Dynamic sleeve cap: Automatically fits the armhole for seamless integration without manual adjustments
ASTM sizing tables included: Allows drafting from industry standards for consistent sizing across children, teens, and adults
A4-compatible PDF: Enables easy printing and direct use with projectors or vector software
Summarized by Shop
***After you purchase your sloper, you can access your tool in the MiSlope Drafting Library. NOTE: You must create your account using the same email used for purchase.
**Unlimited downloads *Lifetime access to the Princess Seam Block tool for the lifetime of MiSlope.com
What Is the Dartless One-Piece & Sleeve Block?
A fully custom, me
Pattern Distribution Format
PDF
Skill Level
All levels
Works Across
Kids, teens, and adults
Includes
ASTM girls sizing tables (Sizes 2-20)
Calibration
1 inch square for pattern scale
Summarized by Shop
5.0
6 ratings
5
4
3
2
1
The Digitalization I Needed
It is really helping me in my workflow to create custom patterns.
I’m looking forward to trying new patterns as soon as I have the opportunity! I love it.
J
Javier · February 8, 2026
Amazing!!
The measurements I took resulted in a perfectly sized leotard for my dancer, I didn't have to make a single adjustment. Thank you!!
C
Customer · September 26, 2025
From Endless Adjustments to Perfect Fits!
Okay, so I make dance costumes for the kids over at my local dance studio. Anyone who's tried making custom pieces knows it's not a walk in the park. For years, I'd used patterns and tweak them to work... Let me tell y'all, it was a mess of pinning, adjusting, re-sewing... the works. Tried doing my own patterns once, but it was so time consuming and could get a bit complicated.
Then I found this MiSlope thing. You just pop in the measurements, and bam, you've got a pattern. No fuss. So much time saved and I've barely had to do any adjustments, the costumes fit my girls at the studio like a glove. Sleeves are definitely my enemy and now we have become fast friends.
Honestly? This little gem's been a lifesaver. If you're up late, redoing patterns like I was, give this a shot. Best addition to my sewing room in a long time.