Bespoke Basic Blocks & Slopers Drafted to Fit Your Unique Measurements

Still Looking for that Perfect Fitting Garment?

Welcome to the Revolution in Automatic Pattern Making. Draft Bespoke Basic Blocks, Slopers & Basic Sewing Patterns From as Little as £4.99 per Block.

Start Drafting Bespoke Basic Blocks, Slopers & Basic Sewing Patterns

Add your measurements, pick your bespoke basic block or bespoke sloper and then customise it further by changing the fit, dart placement, length, seam allowance and sleeve. Finally, download it either as a multi-page PDF, AI or SVG file.

Click a product example below or visit the Lab to see our full range of blocks.

Draft a Bespoke Basic Block with Your Measurements

Create a profile, follow our measurement video and add your personal measurements to draft bespoke basic blocks and slopers that fit your unique shape and measuements.

What is PatternLab?

The Lab is an automated pattern making tool, developed specifically to create bespoke basic blocks and bespoke slopers designed to fit your measurements. A beautifully-fitting bespoke basic block is the foundation of any fashion project or collection. The Lab, our automated basic block drafting software, dramatically speeds up the pattern making process, by creating bespoke basic blocks to fit you or your client. You can then focus on what matters adapting your basic blocks into 100’s of different patterns and garments.

We automatically draft bespoke slopers in minutes, saving you hours.

Bespoke Basic blocks are also often referred to as: Slopers, Basic Sewing Patterns, Master Patterns, Block Patterns, Foundation Patterns.

We have spent years deconstructing, studying, and experimenting with a variety of different pattern-making techniques- Techniques that are either outdated or far too standardised. Our response was to create a simple, reliable process to draft bespoke basic blocks, slopers and basic sewing patterns that fit accurately on a range of sizes and body types. Each bespoke basic block, sloper or basic sewing pattern we create, takes us years of painstaking analysis and reverse engineering until we find the drafting method that works.

Our formulated method automatically drafts a bespoke basic blocks, slopers and basic sewing patterns for each customer, based on their individual measurements. PatternLab does not transform, scale or grade from existing basic blocks and slopers. Instead. we automatically draft each bespoke basic block from scratch, point-to-point and measurement by measurement, to get a unique fit each and every time. Each bespoke basic block, sloper and basic sewing pattern we draft is unique to its wearer, which reduces the number of fittings and adjustments before the fit is perfected.

What You Get?

We sell our slopers and basic sewing patterns in two formats to suit the various needs of our customers. It is entirely up to you what format you purchase our master patterns in and how you use them.

PDF Paper patterns

For those that prefer manual or hand-drawn bespoke basic blocks we provide full-scale, multi-page, PDF  in a range of basic blocks, slopers and basic sewing patterns in common paper sizes including US Letter, A4, A3, A2, A1 and A0.

Bespoke basic blocks, slopers and basic sewing patterns.

Editable Digital ePatterns

An ePattern is a full-scale editable version of your bespoke master pattern, saved in the form of an SVG file (Scalable Vector Graphics). ePatterns give you the ability to edit or re-draw the lines of your drafted blocks. They work in conjunction with our online courses and tutorials. An ePattern can be imported or opened in a variety of different software applications that accept the SVG format such as Adobe Illustrator and Inkscape, to name but a few.

Who is it for?

Our master pattern drafting software is designed for both novices and professionals alike. Our customers come from a variety of disciplines and include self-taught creators, students, graduates, designers, pattern-makers, seamstresses, hobbyists and more! PatternLab customers often comment on how simple and effortless the of auto-drafting master patterns is. Many of our customers have spent years trying to find bespoke basic blocks, slopers and basic sewing patterns that fit their measurements or their clients measurements.

PatternLab  helps to save you time and money!

Master Digital Pattern Making in Adobe Illustrator with our Free course Adapt basic blocks into finished patterns

Standardised Basic Blocks & Slopers

Looking for professional and relaible basic blocks you can use imediately? Browse our library of pre-drafted, standardised basic blocks, slopers and basic sewing patterns. Available in sizes UK4 – 24 / US 0 – 20 / 32 – 52 and pattern formats: PDF, Ai & SVG

Customise your Bespoke Basic Blocks Further

Our step-by-step courses and video tutorials cover everything from digital pattern making for beginners to fashion design theory. Start creating your own designs & patterns and garments, quickly and effortlessly.

FREE Digital Pattern Making Course

Understand the basics with our FREE courses and tutorials that focus on the fundamental concepts of pattern making in Adobe Illustrator. Learn step by step, where to find the software, how to customise it specifically for digital pattern making, what tools you need and how to use them. Begin adapting your bespoke basic blocks, slopers and basic sewing patterns into hundreds of different designs that are easy to store, share and edit.

“This is an incredible resource and so brilliantly done. I’ve been watching them for a while and they’re so helpful 👏🏻👏🏻👏🏻 – Nicole P – Instagram Comment

FREE Fashion Illustration Course

Learn Digital Fashion Illustration in Adobe Illustrator with our FREE fashion illustration tutorials. We show you how to create fashion fashion templates from scratch and then clothe them with your own designs. You don’t need any experience in either Adobe Illustrator or free-hand drawing. We teach you step-by-step, starting with the absolute basics, explaining each tool in detail. It’s a 7-part course that will help you create professional digital fashion illustrations in no time!

“As a total beginner I can say that this course is the best to learn Illustrator, great tutorials with very clear explanations!” – kraphite – Instagram Comment

FREE Technical Drawing Course

Technical drawings for fashion (often referred to as specification drawing, spec drawing or flats) are an essential part of the fashion design process, especially if you are planning on transforming your fashion designs or fashion illustrations into finished graded patterns or initial samples…

“Those tutorials are gold thank you ever soo much ❤️❤️❤️❤️ ” Azzedine – YouTube Comment

Help and Support

Get the answers to your most important questions with Customer Question Time. View existing questions or ask us your own. we’re here to help and so too is our community.

Understand your Bespoke Basic Blocks

New to taking measurements and drafting patterns? Great, we’ve got a whole bunch of handy guides and tips that will help you get the very best results when drafting your bespoke basic sewing patterns.

About Us

PatternLab is the brainchild of Ralph and Mike who met back in 2014 over a shared idea. Despite living on opposite sides of the planet, Ralph in London and Mike in rural Australia…


Designer brand –

Thank you PatternLab, you we’re a great help when it came to building our basic blocks for the collection. Good luck!

Vendula Kalinova

Fashion Designer –

Just a fantastic service! Self-explanatory to use and just speeds things up. Mostly their customer service is simply outstanding! Could not recommend more.

Deccy Cherry

Sewist & Creative – Instagram

Just found this website. It is amazing for all those who are either beginners or advanced in sewing This site will save you such a huge amount of time…

What’s going on with PatternLab?

Connect with us on social and stay up to date with new projects, products and updates.


Instagram Bespoke basic blocks, slopers aInd basic sewing patterns
Trouser paper sewing pattern on table. Bespoke basic blocks, slopers and basic sewing patterns.
A-Line dress on mannequin in studio. Bespoke basic blocks, slopers and basic sewing patterns.
Ralph Pink basic blocks slopers and basic sewing patterns skirt photoshoot.

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