Someone save me from math hell Q~Q

if you have a 7 1/2" waist and a 1" dart, you would use 1 1/2 at the center front, then a ½”dart, then 3", then a ½”dart, and then 3". 1 1/2 is half of 3".

i need this example in an equation with variables so i can plug different measurements into it for different sizes.

i fails hs algebra twice damnit i can do this i have a headache

 

ok so it needs to be W-D
then lets say W-D=A
A needs to be in 3 parts, 2 the same size and one half the size of the other 2

Q~Q

 

erg that might be right?

once you subract D its p much out

 

oh my god it is right

ty

let me check a few more examples one sec

 

8 7/8 waist
3/4 dart

ok so if we plug this in and get 8 7/8 to 1 7/8, then a dart, 3 1/2 and then a dart and 3 1/2.
there should be an extra 1/8 inch left over but it says to plop it anywhere and it would be fine?

my brains to fried to do it im so stupid

 

@Chiomi would the previous thing work for this as well?

-Divide the base of the skirt into 2 and a half parts (ex. 10” = 2”,4”,4”)

its the same just no dart sections

 

@Chiomi do you feel up for helping me with a few other things?

 

ok so this is the method i was taught to use to draft a full circle skirt pattern im not sure if theres an easier way to do this but its all ive got

Full Circle:
This method creates a (cut 4) pattern piece that can me modified as desired

(waist+ease) = A
A/4=G
G+chart amount=J
J/2=drafting number

-starting with a 90 degree corner, use a ruler and mark the drafting measurement with dots using the corner of the ruler, pivot and mark dots at the proper length from one edge to the other. This creates a series of dots that form a curve
-draw a line connecting the dots, it should create a semicircle. (it should be a ‘fan’ shape) This is the waist portion of the pattern.
-measure the desired length of the skirt from this curve in the same method as before, creating a larger curve (you’ll have two curves total)
-measure and make sure the first curve is equal to the G measurement from earlier, if it isn’t add or take away from one of the edges
-mark notches on both sides 7-8 inches down from the waist
-mark the grain line: fold the pattern in half symmetrically, open up again; the fold line is the grain line, or use it as a reference to move the grain line to create different looks (if you use the fold as the grain line and don’t plan on modifying the pattern further make ¼ inch flare adjustments to both sides, blending smoothly)

you end up with something that looks like the attached file
a full circle skirt is four of those with the flat edges sewn together to form a donut shape
the center circles circumference should equal "A"


the issue i have is i also need methods to draft:
Double Circle, which i think would be 8 pieces?
¾ Circle, 3?
½ Circle, 2?
¼ Circle, 1 piece



so would the modification to the "formula" be:
(waist+ease) = A
A/(however many pieces you need for the type of skirt) =G
G+chart amount=J
J/2=drafting number

im not sure...

edit: no matter what kind of skirt it is the interior circumfrence must equal "A"

 

ok so she actually does use the same method she just fuzed two of the quarters together. what do you think of this?

C=Waist + ease (Circumference)
R=Radius
C/( 2*Pi) = R

Full Circle: R, cut 4
Double Circle: R/2, cut 8
¾ Circle: R(1.33), cut 3
½ Circle: x 1.5 or 2???, cut 2
¼ Circle: x4???, cut 1

 

the top four are correct

C=Waist + ease (Circumference)
R=Radius
C/( 2*Pi) = R


Full Circle: R, cut 4
Double Circle: R/2, cut 8
¾ Circle: R(1.33), cut 3
½ Circle: R(2), cut 2

¼ Circle: x4???, cut 1

 

heres another attempt to visualize them all

the interior circles circumference is the same for all be the outer volume changes.