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Drafting a Pants (Trousers) Pattern from RTW Shorts

Pants pattern drafting

Lately Christopher and I have been talking a lot about fashion. It started as a discussion about not being able to find comfortable clothes, especially pants (trousers for British English speakers) and how hard it is to find clothing that goes against the trends. Being crafty, we explored making our own clothing. The cost of fabric, supplies, time it takes to cut and sew all highlighted how impossible it is to produce clothing ethically at the low prices charged for much ready-to-wear clothing. That doesn’t even take into account the raw materials that are used to make the fabric and problems with content, pesticides, sustainability, etc.

At the same time, like many, our budget, doesn’t allow us to spend a ton on clothes. We try to make the most of our clothing budget guilt-free by shopping thrift stores and second hand shops. That way we aren’t adding to the problem by purchasing new. Most thrift shops are charity-based, so our purchases help others. We often find better quality items than what we would otherwise be able to afford this way, too.

With thrift shopping, you’re not as limited by trends. If you’re looking for something in particular, unless it’s a common item, you’re still likely to come up empty handed. That has been our problem when it comes to comfortable men’s and boy’s pants. Both Finn and Christopher would prefer something a little roomier, like karate gi pants. Unfortunately, nothing like that has been in fashion since M.C. Hammer. That means it’s time to put my sewing machines to use.

Making a Pattern from Shorts

This summer, I started by trying to copy a pair of the cotton knit gym shorts they practically lived in, adding a gusset for comfort and mobility. I used to buy bulk bags of t-shirts from Thrift Town before they closed, so instead of using new fabric, I used some XL t-shirts I had on hand. That way, if things went horribly wrong I wouldn’t feel as bad.

If you follow me on Instagram, you might remember seeing this photo with some enticing caption like, “Working on a new project!” Then, nothing else was said. Sorry.

I have zero experience with pattern making, so this was a learning experience. Here’s a brief overview of how I did it.

shorts pattern

I laid the shorts inside out and folded in half, front to the inside, smoothing them as flat as possible. Then I traced them, adding about an inch all around. The inch is for seam allowance and to account for the fact that it’s impossible to get finished shorts to lay flat. I always err on the side of too big, because that is much easier to fix.

At the waistband, I measured the waistband and extended the pattern by that amount plus seam allowance above the waistband. This allows it to be folded down for elastic and a drawstring casing. At the hem, I extended the lines two times the width of the hem to allow enough fabric to fold and hem. On the pattern, I drew lines straight across to show where the finished hem and waistband hit on the original shorts for reference.

Then I folded them in half , backs to the inside and repeated the above steps since the back is cut differently than the front.

Drafting the Gusset

For the gusset, I drew kind of a triangle with the top point cut off. To do this evenly, I folded a piece of paper in half, drew a half inch line perpendicular to the fold, moved over about four inches and drew another perpendicular line measuring one and a half inches. Then I drew a straight line connecting the tops of the lines.  I cut along the lines and opened it up to get my gusset pattern. Sewing the gusset in with the wider part at the crotch seam and using a half inch seam allowance results the gusset tapering down to a point.

Shorts to Pants

Shorts work for summer, but I needed to come up with a pants pattern for fall and winter. Chris suggested just making the shorts pattern longer, so I did by measuring the waist to floor measurement and extending my pattern the needed amount, including seam allowances.

pants pattern drafting

I did this by taping the bottom of the pattern to a big piece of paper, sketching out the needed length and side seams and cutting it out.

Final Pants Result

My pattern isn’t perfect. I think I’ve tweaked it each time I’ve used it. Since the pants are made to be loose and flowy it hides the imperfections.

These are my first attempt. I made them with a linen blend, elastic and drawstring combo waistband and no pockets. I added side-seam pockets later.

Pants

My goal is to find or draft a few more basic, customizable patterns for pants and shirts that can be made in linen or a similar material. Then I can buy a bulk amount of undyed fabric and dye it as needed.

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2 thoughts on “Drafting a Pants (Trousers) Pattern from RTW Shorts

  1. […] keeping with my desire to be more conscientious with my clothing, I shopped my closet for clothes that aren’t bad, but need a little refashioning to make me […]

  2. […] Drafting a Pants (Trousers) Pattern from RTW Shorts was originally published on SubEarthan Cottage […]

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