HI, I am have major problem with seemly Me Multisizes. I have been following the tutorial: ( I have already selected ‘Standard’ for Multisize, my units are centimeters (currently SeamlyMe only caters for centimeters or Millimeters for Multisize tables), Bust size is 50 (which corresponds with the Bust Circumference of 100.30cm divided by 2) and Base height of 158 (which corresponds with the bottom end of the standard height of women which seems to be from 5’3" to 5’6"). Once you have entered these values, click on ‘OK’ and we are set to go… At this point I have chosen to change the height to 158 and size to 38 which corresponds to the size I am working with. My problem is that when I save and reopen the file it automatically revert to Height 176 and Size 50… I have even changed this in preference and still it just will not change to the height and size I would like… What am I doing wrong??? I have seen that in the past this has been a problem of sorts, but not sure if it has been resolved or advice on how to rectify this? Any help would be much appreciated. Thanks Mark
Yeah, something is odd there. When I just tried it, the numbers came up as I had them set (164, 56,) but the draft was the default (176, 50.) I had to change the numbers away from the supposed current sizing in order for the sizing to be working. So, changing from 56 to 50 would change nothing, but then it would shift when set back to 56.
2025.06.02 release, built in Devuan Linux.
Hello @Mark
I normally set my Pattern Preferences according to the measurement file being used:
In this case, the increments cover sizes 32 to 42. I like to set the pattern to open on size 32. I don’t use the height increments, so I normally set it to 164cm.
Here, you can see that it does open on size 32 and that I only have those 5 sizes on the list when I want to change the size:
When I do open the Pattern Preferences after setting them, for some strange reason, it does show that other sizes are also marked, but we haven’t found out why they keep showing as check-marked but I just ignore that.
To get to the Pattern Preferences, open the pattern in Seamly2D, go to File > Pattern Preferences and select the Heights and Sizes tab at the top.
I agree with you that the pattern should be controlled through the measurement file and not inside the pattern, however, this will need a lot of rewriting of the code, so it’s not going to happen any time soon.
I hope this helps you. 
I suspect we’ll have a better multisize interface before we fgure that out. 
Just something to point out… my understanding is the multisize was orginally setup to use just metric sizes where the size 22 to size 72 are just labels for the metric sizes 22-27. They could have easily have been named size A-Z… it’s the measurement table that actually defines what the sizes are. Unfortunately the multisize “labels” do not allow for imperial measurement sizes like misses size 2 -16.
Yes, the sizes were originally set for EU sizes but they can mean anything you want as long as you remember what they mean and that your system has increments of 2 numbers between each size. 
The most important thing is that you set your base size and the amount the specific measurement area must increment every time this base size changes in the pattern - either up or down.
This is something that I tend to work with so that I can determine the EU size according the the country’s pattern making system I’m working with:
Thank you of your advice on this problem. However if I could just clarify what I should do in order to get this working as a size range for grading my patterns: Should I, ignore the height and size (176 & 50) at the Bottom of the input page and continue t o add my base size of 34 (size 6) and assume the program will by-pass the hard coded information and use the one I have set up ( 34 - 44 ), and then select the sizes in the pattern preferences in order to correspond with the measurements etc? OR Should I individually set each set of measurements for each size (34 - 44) and ignore the Multisize interface completely? I and ready and able to use a work around if this will enable me to create the pattern in multiple sizes at once etc. I look forward to your response. Thanks in advance. Best regards Mark
I did an in-depth study of the multisizes back in 2017 so that I could use them to the best advantage with the minimum of worry. What I found is that the Height is a very small increment added to the Size increment to make up for the distance between measured points according to height (the small extra amount that the fabric has to travel on the width measurements). With this in mind, I completely ignore the Height increments and add a line to the final pattern pieces where one can adjust the pattern according to the height, and only draft my patterns for 1 height measurement which is normally around 164cm because I’m short and most people are around 168cm, so it’s about half way between 161cm & 168cm. :grin or I use as close to the height in the table in the pattern making system:
After setting the Height when starting a new measurements file, I completely forget that it exists, except for the Lengthen/Shorten Here line on the pattern pieces.
Before I even start a new multisize measurement file, I normally do it on a spreadsheet, convert the inches to cm, and find the average increment over a number of sizes. (I normally just use the 1st column of the table as the base size using the size conversion according to the table that I previously posted - if I feel like it, but consistency helps you to remember the sizes with time.)
This is a screenshot of a table that I did for HJA, all nicely coded with SeamlyMe image reference codes, converted to metric and increments calculated:
Then I hide the columns that I don’t need and only keep a few in view:
These are the 1st 3, the base size and the increment for sizes.
After have this in hand, I put it on the left side of my screen & open SeamlyME on the right side of my screen, start a new file, enter the height & base size, open up all the Known codes in the order that I have them in my spreadsheet and then open up any Unknowns.
With them all listed in order, it’s a small matter of going down the list entering the base size and increment to each measurement area in spreadsheet and SeamlyME.
Where grading rules change after a number of sizes, I create a 2nd & 3rd measurement file for that specific range of sizes. This way, you can always use the same (carefully drafted) pattern over almost any amount of different sizes, you just need to remember what sizes the one measurement file is good for and to load up the next measurement file for the next number of sizes when exporting. This is why I normally include the sizes in the file name, so I can see it on the screen.
Here you can see 2 ranges of sizes for HJA:
You’ll need to check-mark the sizes of all the measurement files that can be used in the pattern in the pattern preferences.
I absolutely LOVE the multisizes, you just need to make it work for you. It’s most certainly worth being able to change the size of the pattern in the sizes and just ignore the height. Even while drafting, I prefer to draft with a multisize file so that I can check that the curves, etc. adjust nicely over a range of sizes.
If you have a well-drafted pattern, you can always load up any amount of personal measurements into the file and it will resize to a person’s actual measurements. So, either way, the pattern works.
I think I’ve covered my way of working. Please don’t hesitate if you have any further questions. 
HI Grace. thanks for the information which I will follow setting up the multisite file. 1 question that is confusing me. When a new multisite file is started the prompt is for base size / height - is the base size for example 34 (European) or is it half the bust size as instructed in the tutorial on wiki? I also assume that the height can be defined here too example 164? Its slowly coming together and just trying not to make mistakes at the beginning. Many thanks for you hep. Mark
I always use the 1st size in the table as my base size, so from my Excel sheet above, I have it in front of me when I create the new file:
The height isn’t going to do anything, so it really doesn’t matter what you put in there, but it’s nice to be reminded what height the pattern making system measurements are for. So I put it in there, just as a reminder.
In Aldrich, they use this:
I can’t see where they say for what height in HJA.
So… If I was creating the file… I’d change it to Multisize, Units will be cm, Base Size will be 34 & Height will be 164 or 168 or whatever your in-house size chart caters for.
That’s perfect thanks!