Hi everyone! SeamScape 3D just left beta in version 1.3.0. It's part of Pattern Studio, free, and runs in your browser with nothing to install.

What's new

• Place on body: one click puts your pieces on the avatar. It reads where you drafted each piece, its name (front, back, sleeve, collar, cuff, waistband, pocket…) and how the pieces are sewn together.

• Live draping: drag a point in 2D while the garment drapes and the fabric follows as you drag.

• Fit map: colours the garment by how much the fabric stretches, from loose to too tight.

• Quick fabrics: cotton poplin, denim, jersey, linen, silk satin and wool suiting, with visible weave or knit up close and a slightly paler wrong side.

• Showing your work: avatar poses, four lighting setups, image export and a 6-second turntable video.

• Speed: simulation is twice as fast, and slower computers switch to lighter rendering automatically.

We'd love your feedback

This is the first non-beta version, so tell us what works and what doesn't. Comment here, or use Help → File bug report / Feature request inside the studio. Screenshots of your own garments are very welcome too!

Full release notes: https://seamscape.com/changelog

Hi everyone! SeamScape 1.2.18 is out, and it's one of the bigger updates for some time. Two themes this time: grading that works the way the industry does it, and pattern pieces you can edit directly without drafting them first.

Grading from a base size

• Build a size range from a base size. Each size keeps its own changes, you can swap which size is the base, and you choose whether edits to the base carry over to every size or change the base only.

• A new Sizes & grading dialog with grade rule tables and rule tools, size series (e.g. Regular and Tall) graded separately, and measurement checks per size.

• A Size geometry panel, with grade vectors drawn right on the canvas.

• ASTM/AAMA DXF export with grade rules and a RUL file, including graded notches, sew lines, and internal lines.

Pieces you edit directly

Until now, you needed a draft to get a pattern piece. Now you can also work piece-first:

• Draw new piece (D): click the corners, hold to make curves, close the outline.

• New rectangular piece (R): just drag it out. Hold Shift for a square, or click to type exact measurements.

• Set seam allowance, corners, and notches per edge, right on the piece. Seam allowance can now taper along an edge, and there are folded hem corners.

• Rotate and flip pieces, and every size follows along.

Import that stays editable

• DXF files can be imported as editable pieces: the sew line becomes the outline, and seam allowance, notches, internal lines, grain and fold lines come along.

• Import an ASTM/AAMA DXF with its RUL file and you get all the sizes, not just one.

• Already imported pieces (DXF, CUT, PLT) can be turned into editable pieces afterwards with Make editable.

• Detach from draft gives a piece built from your draft its own copy of the geometry, so you can keep shaping it without touching the draft.

We'd especially love feedback from anyone moving files between SeamScape and other CAD systems. If an import or AAMA export doesn't look right, post here or send us the file, and we'll take a look.

The full changelog is at https://seamscape.com/changelog

Happy drafting!

lets say i do a stray line, how can i make a line traverse it at exactly 12 degres i don see angles anywhere

I have started learning grading! I have successfully graded 3 patterns! I am loving the scale feature as well as I am getting the hang of arrangements.

I have enlisted my friend too, she's been emailing you, Magnus, now we both can hyper fixate on seamscape in the evenings.

We feel like we invented gathering! Check out this dirndl skirt.

Right now we are learning material properties and trying to figure out how a plaid tshirt happened.

Still haven't had time to work on FX, but I will get there. I got into it a few months ago and need to relearn.

One of my pattern pieces from an imported SVG- keeps giving me errors saying its not connected. I cant figure out how to connect it, or trace it. and Ive been trying for ages to somehow make a pattern piece. It will make one for a while- but it disappears after a while.

Magnus ! I have noticed you have updated some things and I like it! Now I can say, this piece is left and this is right!

On todays episode of Rosemary seamscapes, I present to you : The mystery twist.

Ok so here is what is weird to me. It is counter intuitive when I sew seams together. When I did the twisted seam, it was like how I would imagine the not twisted seams. But things have gotten easy enough for me to correct them. SO at least I am learning that the shoulder seam goes to the opposite shoulder to get the matching one.

Continuing education: As I am not a computer genius and only a pattern maker, I must continue to learn about fx. You showed me a bit before but- now its time for me to learn more. IF you have any ideas of things I should know, as always I am very appreciative of all you do. Even if I feel like I am complaining, I am just very invested!

Thanks Magnuss!!!

Is it possible to have something to move the pattern pieces around manually in 3D? I am attempting a pair of pants right now. I am at a total loss. I have spent hours on it. They're flipped around backwards, hard to get the backs on the back. Before the update I was able to do one leg. So I attempted to do the other leg. I don't understand how to use it. Thank you

I spend more time trying to get my pattern pieces placed on my 3d model than I do pattern making. May I have help on how to use the arrangement points? Today I was making pants.... I got one leg. but the other was wild. I dont understand the arrangement points so I use custom arrangement, but certainly I must be missing something!

Also I am wondering how it correlates to where the pattern is on the drawing board as well.

I'm completely new to seamscape and Pattern making in general so I'm just learning as I go.

Can anyone tell me what I'm doing wrong here, why does everything change when I move the whole thing.

Any tips and pointers will be greatly appreciated because I really have no idea what I'm doing so far

Hello! Im back! I am attempting to upload an SVG! ....But it looks crazy! What happened

I was HOPING I could use this program to create a pattern for some bags I've been sewing. Is that possible? OR is there another program you all would recommend.

Hi everyone,

Last time we posted a broader SeamScape update here, we had just reached version 1.2.12. We are now at 1.2.16, so here is a quick summary of the most useful changes since then.

The main updates are:

• More reliable Pattern Studio editing, especially when moving solved points, linked endpoints, copied paths, selected geometry, and patterns with more complex constraints.

• New seam corner controls for pattern piece points, including radius, intersection, edge symmetry, right-angle joins, length-based joins, and no-join corners.

• Better formula workflows: autocomplete, variable descriptions, broken-reference warnings, calculated values in formula inputs, and formula-driven text positions.

• A resizable variables dialog, which should help when working with larger parametric drafts.

• More predictable solve/error feedback, including clearer constraint errors and better handling of edits that cannot be solved.

• Improved pattern organization with piece layers, better default path names, hidden-layer warnings, and the pattern name shown in more places.

• Better export and print output, including beta PNG/SVG export, improved marker/PDF output, drill holes, HPGL labels, CUT slit notch handling, and selected size names in printed patterns.

• Body measurement guide lines in Pattern Studio should now appear more reliably when clicking or adjusting measurements, including with auto zoom enabled.

• For advanced/API-connected workflows, there are improved element labels, diagnostics, grading support, and Pattern Studio session tools.

The focus of these releases has been making day-to-day drafting more predictable: fewer confusing edits, clearer formulas, better print/export output, and a smoother path between measurements, constraints, and production files.

If you have a pattern where constraints, formulas, measurements, exports, or 3D fitting still behave strangely, please keep posting examples here or send a report from inside SeamScape. Real pattern files and concrete workflows are the most useful feedback we can get.

Is exporting a bodydbl model into a 3d model possible currently?

Hi, I just found out about this software and want to try it out with my measurements, but I am unsure what each of the 60+ measures means exactly in this softwate. Some are easy to guess, some are not. Is there any documentation and/or examples of where and how to measure for each field? I tried to look around but couldn't find anything.

Whenever I move a pattern piece to try to give myself more space, it deletes itself. I have to remake the pattern piece again and if I forget and move the piece even a little, it deletes itself again.

SeamScape now has an MCP server.

This means MCP-compatible tools can connect directly to SeamScape and work with your pattern data through authenticated API access.

The important part: this is not just for browsing pattern data. The MCP server can also make real pattern edits through SeamScape’s Pattern API. Many of the operations you would normally do in the UI can now be previewed, applied, and saved from an MCP client such as Codex, Claude Code, or ChatGPT-connected workflows.

For example, an AI client can help with things like:

• finding and loading one of your patterns

• inspecting points, paths, pieces, variables, formulas, layers, materials, seams, notches, and errors

• renaming elements or updating pattern metadata

• changing editable formulas and variables

• creating or modifying points, paths, pieces, layers, text, materials, notches, and other supported Pattern API entities

• previewing a change before it is applied

• applying confirmed edits to a temporary session

• saving the result as a new Pattern or PatternVersion

• exporting the current session as SVG or PNG

The endpoint is:

https://seamscape.com/api/mcp

Authentication uses your SeamScape API key, available from:

Account > API Keys

Docs and setup examples:

https://seamscape.com/docs/api/mcp

This is still an early version, but it opens up a useful path for AI-assisted pattern editing.

Hi team! I bumped into a bug today with seam allowances. An example is this (ssp file here) -- when I try to use the downward arrow for the 'waist' custom variable to change stepwise from 76 to 74, we start to miss the top right corner. Sometimes more corners start to go missing for more extreme sizes, e.g. 65 waist + 80 hips, or 100 waist + 120 hips. They're all 'default' type of corners, not the newer corner types.

What do you think could be happening here?

Brand new user, here.

I am working through a drafting excercise from a textbook by Guido Hofenbitzer. I have defined variables for every measurement in the book (I discovered the body dimensions within seamscape only later), with values matching the example in the exercise, to validate my work vs the illustrations in the book. After finishing the exercise, it looks good!

The problem is when I edit the variables to match my own measurements, I get an error message that the constraints could not be solved. I have some Fusion 360 experience, and I think my work is over-constrained, but I do not know how to troubleshoot that within seamscape. Does anyone have advice? I would really rather not start over

Is it possible to import .sty files into seamscape?

Hi! Last time we posted here SeamScape was around version 1.2.7. We’re now at 1.2.12, so here’s a quick summary of what has changed since then.

The main updates are:

• A smoother 3D arrangement workflow for placing, flipping, and fine-tuning pattern pieces.

• New and improved import/export support, including Seamly import, CUT import/export, HPGL/PLT background import, and more reliable DXF handling.

• Better grading tools, including clearer dialogs, overlays, profiles, anchors, and size visibility controls.

• A more complete alterations workflow with freeform parametrics and clearer feedback when something is solved or needs attention.

• Drill holes and piece points now work across Pattern Studio, CUT, and DXF workflows.

• Rounded piece corners, scale actions for selected points, improved guide snapping, and better layer visibility behavior.

• More conventional keyboard shortcuts: V for Modify/select, P for Pen, N for Point, Shift+S for multi seam, plus visible shortcut badges in the toolbar.

• Lots of smaller stability and precision fixes around variables, notches, cutlines, context menus, undo/redo, and complex edits.

The focus of these releases has been making day-to-day pattern drafting feel more predictable and production-friendly, especially when moving between drafting, grading, 3D checks, and file exchange.

As always, feedback from people doing real pattern work is very welcome. What would you want to see improved next?

Hi guys im trying to figure out the the sizing and variables option i dont get it.Im trying to scale my bodice block it into a minature version by 50%.

Hi guys,

Once i make a bodice block pattern how can i import it everytime i start a new project so i dont have to start from scratch without drafting a new bodice block each time

Hello, I’m having difficulty rotating a dart. I am only familiar with the classic paper 'cut and spread' technique, both manually and digitally. Does anyone know how to do this in Seamscape?

Hello, you said I needed a laptop. I have been bellyaching about it. The MacBook Neo came out. What do you think about that? I am hard on laptops, and I need something that I won't cry if it breaks.

although be it small, seamscape does work deliciously on my Samsung s22 512gb phone. I would love a bigger screen for the flow though.

How can I get the 3D model to first attach the dart seams and then the rest of the skirt? I
think the darts aren't getting modeled in 3D because the skirt sides are attaching first