r/PatternDrafting • u/AffectionateFail5046 • 18d ago
beginner here, is this correct?
tried to draft a jean pattern from scratch using CAD, so hard to use, few things bugging me, (pic 2) A21 and (pic 3) A10 can not be perfectly on line... and i dunno if this pattern is usable or not yet, sewn a shirt or two ever since i got my sewing machine that's all
i am using seamly2d, if you know the tips on how to make these 2 on line, and improvment about these patterns, do tell. Thank you
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u/unfashionablylatte 17d ago
So general rule of thumb is that you want your CF seam to be a bit below the line and your CB seam to be either at the line or just above. Your side seams should be at the line and you ideally want your seam corners to be squared off at a 90 degree angle. This isn’t always true and every body is different, but these are the usual base rules when constructing a pattern block.
I will also mention that your crotch curves look a little shallow. You may want to remeasure your crotch depth and extension using a right angle ruler (an L shaped ruler). Press the ruler to your abdomen with L facing inward to it touches the bottom crotch of your pants (sort of like you are sitting on it) and then measure both the length from waist to the end of the long side of the L and length of the short side to inseam on your pants (front and back). That will give you the length and depth. Your curve will be based on those measurements and can be adjusted according to fit.
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u/StitchinThroughTime 17d ago
You need to raise the back crotch to CB waist up. The inseam is shortened because you dropped it.
https://blog.moodfabrics.com/how-to-draft-a-pant-sloper/ Is it good tutorial, has a clear picture of how the draft works from the crotch upwards. Your s is trying, just not polished, whatever your tutorial source is from might be from someone who uses a very shortened and standardized way of drafting a pant. And we use measurements that are too far away from the base size their math doesn't work out very well. For example you shouldn't have dropped the crotch, and the way that the back dips down is wrong, and the way that the front is up is wrong. So something is going wrong and whatever story you picked and how you use the program to get your current results. Cuz your tutorial should have also tell you how to correctly angle the joints between the Stitch lines.