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How I draft patterns with Patterntrace

Using Patterntrace (Swedish Tracing Paper) to draft sewing patterns means I’m not wasting fabric, but can make a 3d version of my pattern and check all my measurements are correct. It lets me ensure I like the size and shape of it, and to make alterations, before making it in fabric. Patterntrace can be sewn together like fabric, or to save time you could tape it.

 

I used it to make a trial version of a bag I was designing for The Sewing Directory (see picture above). It’s a handbag sized bag with an asymetric patchwork flap. Quite different from anything I’ve designed before so I wanted to make a test version before I started to cut into fabric. 

 

Sewing pattern drafting

First, I placed Patterntrace over my cutting board so I could see the measurement grid underneath.  Patterntrace is translucent so you can see through it. Using a ruler I drew the lines I needed to make the main body piece of the bag. I marked the measurements on each line, but remember to make the marks on the inside of the pattern piece not the outside or you’ll cut them off when you cut out your template.

 

Noodlehead everyday essentials

When I cut out my original pattern piece I realised it was too small. So I placed a piece of Patterntrace over it and used the first template to scale up to a larger one.  The round blue things are my pattern weights, I use them to keep the original template in place whist I drafted the second larger template. I like to keep my original template intact, so I can trace off it as many times as I like while working on a design. So I put another piece of Patterntrace on top, and traced off 2 copies, for the front and back panels of my bag and labelled them ‘front’ and ‘back’.

 

sewing with Swedish Tracing Paper

Using the measurements I had written on my original I calculated the approximate length of the gusset. I cut it and using Wonder clips attached it to the front panel and stitched into place. As you can see from the image above I had made the gusset a little long so I cut a couple inches off and changed the measurements for my pattern accordingly.

 

The only real difference I noticed when sewing with Swedish tracing paper is that it crumpled around the corners a bit because it doesn’t have the ease that fabric has. But other than that it handled just like fabric, I didn’t have to use a special needle, thread or foot to stitch it.

Using Pattern trace to design sewing patterns

 

You don’t have to sew Patterntrace, you can just tape it together if you want. When adding the bag flap I used washi tape to put the flap in place and check it was the right size and shape for the bag. Because washi tape is less sticky than regular Sellotape it’s easy to peel off without damaging the paper. This means I could easily try several bag flaps if I wanted to.

 

Once I was happy with my draft version of the bag I used the original template, the bag flap template and the measurements I had written down for the gusset to make the bag in fabric and then wrote up the directions for the patterns. The bag pattern will be available for free on The Sewing Directory from February. You can see my first sample of the bag below.  

If you’d like to order a roll of Patterntrace so you can start pattern drafting just click here. Don’t forget if you sign up to our newsletter you get a 15% discount on your order  🙂  

 

Rainbow bag pattern drafted with Patterntrace
How I draft patterns with Patterntrace

General tips and points to remember…

  • The terms jersey, knitted and stretchy fabric can get used interchangeably, not just here but generally as you look around online you’ll see these terms being used to refer to similar things.
  • This fabric can be made from a variety of fibres such as cotton, viscose, modal, polyester, wool and bamboo. Usually they will also have a percentage of a stretchy fibre such as elastane or spandex.
  • The thickness or weight of them can be described in grams per square meter but as this number is hard to put into context and isn’t always available more subjective terms can be used to describe them such as light weight, medium weight etc
  • They can also be referred to with special more technical names such as ponte roma, double knit, single knit, sweatshirting and loop back. I’ll cover the most common ones below in more detail
  • I've tried to keep things are relevant as possible for the home dressmaker. These is lots of other more detailed and technical information out there but I hope this summery helps you understand more about this great fabric and how to sew it into your handmade wardrobe.

How to work out the amount and type of stretch

They stretch in different ways by different amounts. Some fabrics have a two way stretch and will stretch between the selvedges. Some have a 4 way stretch and will stretch lengthwise as well as between the selvedges. Use a swimsuit as a way to remember - it’s a 4 way stretch as it must stretch the length of your body as well as the width of your body.

The percentage of stretch refers to how much the fabric physically stretches, NOT the percentage of stretchy fibre (spandex or elastase) that is in them. Sewing patterns will typically as for a minimum percentage of stretch the fabric must have.

Why is percentage stretch important?

Sewing patterns designed for this type of fabric are typically designed with negative ease. This means that the garment you make will be smaller than your actual body measurement so that it stretches and fits around you. That’s why it's really important to use the right amount of stretch, otherwise you won’t be able to get the garment on/off or move in it!

How to use your Stretch Percentage Measurer

If you’re using a pattern which is designed for jersey fabrics then it will probably tell you the stretch percentage that the fabric you use needs to have. This is different from the stretch content, which is how much elastane or lycra is in the fabric.

Step One

Hold a 10cm section of your fabric, stretch it as far as it will comfortably stretch, without over stretching

Step Two

Every centimetre over 10 will correspond to 10% of stretching. So if your test piece stretches to 14cm, then the fabric has 40% stretch.