Seam allowance of sleeve cap

seamallowance

#1

Here I tried to draw what a proper seam allowance of sleeve cap should look like in my opinion. Basically, it should go at 90° angle from where the top “intersection” notch is

Any idea how to make it happen in Seamly? How do you make seam allowance of this part?

I’m considering some “post-production” in Inkscape or maybe other graphics editor but still very little idea about how to make it in the most efficient way


#2

Here is an explanation of using the McCunn method to draft a sleeve. One issue to remember, this is based on individual measurements and is not matched to any specific bodice. You may have to adjust to make it fit a specific bodice. https://wiki.valentinaproject.org/wiki/Sleeve_Block,_McCunn_System

Here are the files used in the example McCunn-basic-sleeve-pt2.val (7.2 KB) and kim-6-29-17.vit (3.4 KB)


#3

Sorry, I don’t see anything about seam allowances on the linked page and the file doesn’t even have details :face_with_raised_eyebrow:

I know how to construct sleeves alright, my question is about seam allowance


#4

070910

I tried to define what I need in “strictly geometrical” terms and that’s what I came up with. There should be a square with side=CurrentSeamAllowance that touches main outline angle and aligns with one of the sides


#5

Hi @Krolich!
I love your question. Here are instructions (you know most of this :D) and a screenshot of the setting required.

  • In Detail mode right click on your workpiece and select Options from the picklist.
  • In the Options dialog select the Seam Allowance tab.
  • In the Node field’s picklist choose the point at the sleeve corner. In the screenshot this is p18.
  • In the Angle field’s picklist, choose ‘by second edge symmetry


#6

Yes, it s better than “by length” but far from perfect. I guess it will have to do for now, thank you :blush:

I will have to correct this unintended “notch” so that plotter doesn’t cut off the angle.

image

Also this option seems to have no effect on acute angles(


#7

sorry. I meant to continue and give information on how to add the seam allowance but the real world interfered. My husband came in and whisked me off to my morning workout. I ab happy that others were able to pick up where I left off


#8

Here is the sleeve I drew with the detail, but also with a second detail containing a seam allowance hack. It may not be exactly what you are looking for, but I believe it shows an approach that may work McCunn-basic-sleeve-Seam-Allowance-Hack.val (15.7 KB)


#9

This is pretty inventive! I will have to turn this idea this way and that, this implementation doesn’t seem usable with cutting plotter :thinking:

Gosh, I love this kind of technical creativity :grinning: