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How to Make a Crotch Curve Template with a Bendable Ruler & Use it to Adjust Your Pants Pattern

J Stern Designs

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This week on Fit Tip Tuesday, I'm diving deep into the bendable ruler crotch curve template. I was really curious to see if I could improve the fit of my Sorcha Classic Slim Trousers using a template of my crotch shape. I ordered a 36" bendable ruler and I gave it a try. I used it to adjust my personal pattern pieces. I also wanted to see if the bendable ruler could help fit a part of pants for my daughter Anna. Join me to see what happened!
00:00 Intro
00:51 How to use an L-Ruler & a Clear Grid Ruler to Measure Your Depth
02:44 How to use a Bendable Ruler to Make a Crotch Curve Template
06:32 How to use the Crotch Template to Adjust the Pants Pattern
07:00 Anna's Crotch Curve Template made a dramatic change to the pattern
08:45 Photo showing how my pants fit after adjusting the crotch curve
09:30 Photo showing how Anna's pants fit after adjusting the crotch curve
11:00 What's up next on Subscriber Q&A and Outro

Amazon Affiliate Link: 36" bendable ruler: https://amzn.to/3Zkrzrb
Sorcha Classic Slim Trousers Pattern: https://jsterndesigns.com/product/sor...

The Straight & Contoured Non-Stretch Waistband Kit: https://jsterndesigns.com/product/non...

The Straight Non-Stretch Waistband Kit: https://jsterndesigns.com/product/str...
The Contoured Non-Stretch Waistband Kit: https://jsterndesigns.com/product/con...

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20 Comments

@InsaneSalti 3 years ago (edited)

Great Video, Jen. That's what I've always wanted to do. But here is a little Tip: When you draw along the bendable ruler, the correct line is on the inside of the ruler, which is the side that touches your body when you measure.

@crisheadley9100 3 years ago

I know you've already had a long career in the sewing, pattern-making and pattern-fitting industry and I love how you still experiment!

@SparkyOne549 3 years ago (edited)

Every short pattern I made, the back crotch was too short. I used rolled up aluminum foil to get my back crotch curve. Once I saw my low butt, I drafted and made a muslin with a foil form. Now I have shorts or pants that fit perfect!

@m.b.c.507 3 years ago (edited)

I think you cracked the code with this idea. Just compared the flex ruler curve to my fit muslin and I can see some changes (lowering bottom) that I know will alleviate the fitting issue I still had (where and how much to scoop). Whoa! You are brilliant.

@koalasez1200 7 months ago

As always, wonderful for fitting the crotch shape. Less fear of pants patterns now.
I have one of those flexible rulers…GREAT top about the aluminum foil 😊. Also, that waist band w/the velcro for easy measuring-gonna do that. Thank you!!!

@Bethdrsrdp 3 years ago

Using the metal ruler for the crotch depth is genius! Thank you for this.

@Tanasuesews 3 years ago

You are our R and D Queen, Jen! I had hoped the bendable ruler would help me and now I know how to use it! When one likes adventure and discovery, finishing projects is a challenge when another one looms ahead! You are a gem.

@LovingHandsDesign 2 months ago

Great video. Can’t believe I haven’t seen this one already. I have a 36” long bendable ruler.

@kelleyleblanc5025 10 months ago

What a great idea for a reusable waist band elastic!

@lindabuker3923 1 month ago

Really good idea.

@kaszaa5333 3 years ago

If you go to the dollar store or a hardware store, they have a multisize pack of “O” rings. I use them to slide on the bendable ruler. They stay in place and slide easily.
Also I bought a second L ruler and use ponytail hair ties to hold them together. It’s then so easy to measure depth of waist.

@chrissereque8716 7 months ago

Thanks so much for this: I just bought one of these rulers, and I am a slender-ish male hoping to fix the bagginess in most men’s pants patterns.

@pamackenzie 2 years ago (edited)

Thank you for these videos - I'm finding them very informative and helpful. I use something called a Multi Angle Measuring Ruler to do what you are doing with your L ruler and your clear grid ruler. They're carpenter tools. They screw together at the ends, or at any point along their length. You can also fix them at angles to measure things like shoulder slope.

@baileyb3977 2 years ago

Omgosh, you simplified that so well for a newbie and the examples really helped me visualise it. I am now subscribing to learn all the things!!😊

@kathleenpac-nw5624 1 year ago

I love you Jen, you'll do anything that will show us how to do something. lol. I've been fortunate to be taught by a lot of famous teachers, but I gotta say, you are my favorite one.

@lynnshepard7485 3 years ago

Genius, Jen! I was using my flexible ruler last night but kept flubbing up because I was trying to mark the points with my finger, pull out the ruler, and then read the measurements. 😂 What a great solution to use the foil to mark those measurements. Using the SewTites is a wonderful way to keep the shape in place. Why didn’t I think of that? 🤣 Tips like these are why you’re such an epic teacher! Thank you so much! Now off to order the longer ruler…