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Tips and Tricks for Dealing with Interfacing

Tips and Tricks for Dealing with Interfacing

When using interfacing, I sometimes come across absurd scenarios that I had never thought before. There are small mistakes that can be just laughed at and fixed simply, but there are also cases where hard-worked projects are ruined by an irreparable mistake (this is from experience 😊). If you want to avoid this unfortunate situation, you may want to refer to the tips shown below.

Interfacing Cutting

When cutting the interfacing, it should be cut 1/4~3/8” smaller than the exterior or interior size. For two reasons, the first is, if the interfacing is the same as the original fabric size, it may come out of the fabric when ironing and stick to the iron when ironing. The second reason is that if the interfacing is too close to the rim of the fabric you are working on, it can be too thick and difficult to fit when you have to fold the fabric on the edge several times. I actually broke the sewing machine needle while going through the thickened part. So, be careful everyone!

Attaching Interfacing (fusible type)

The wrong side of the fusible type has small sparkles due to the glue dots that are in it. So, one might think there won’t be too many cases where somebody tries to attach the interfacing through the wrong side. But unfortunately, that is not the case. I had also had the experience of ironing an interfacing by the opposite side. This had quickly stuck to other nearby fabric which ruined both my project and the unused fabric. So always check the interfacing’s side before applying it. Try touching the interfacing before attaching it to your intended fabric to make sure you got the right side. 

During the ironing process, it is also not recommended to iron directly onto the interfacing’s right side. If the iron is too hot, the adhesive area may melt, or the melted adhesive may come up and stick to the iron, which will result in also a ruined ironing. After placing the interface, it would be good to iron on top of a greaseproof paper, iron cloth or an unused cloth larger than the size of the interfacing. If it’s too bothersome or you don’t have any material that you can use, you can flip the whole thing over and iron over the fabric with interfacing below it.

Interfacing Washing

It is often said that is a good idea to wash and dry the interfacing before using it. As with fabric, interfacing containing natural fibers will shrink after washing, so if a non washed interfacing is washed with the finished project you may see wrinkles due to the interfacing shrinking. I mainly use fusible interfacing, so I don’t usually wash due to the risk of the glue dots falling out, but if you use a lot of sew-in interfacings, I don’t see any reasons not wash the fabrics before using them. People who do wash their interfacings recommend washing the interfacing in warm water to prevent it from shrinking, then lay it flat to dry or use a dryer to dry it. It can also be helpful to use the steam from the ironing.

I hope the information about interfacing that I provide in my two parts are helpful for you and your sewing!

To go back to Part 1 ->  Interfacing from My Experience

iThinkSew Team,

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