I bought one that astually looks like material, lightweight and won't stretch. The clerk at Jo Anns told me this was the best one to use. I suppose you would consider it woven.

I use Pellon 911FF fusible interfacing. I put it on the backside of the T-shirt, and then I dampen another plain T-shirt to place on top of the non-fusible side of the interfacing. It makes a really nice pressing cloth.
I usually buy it at Jo-Ann's on sale for 1.49/yd. I can get two 15" T-shirt blocks out of a yard of interfacing.
I really like the results I have gotten with it so far, but I've seen wonderful results with the woven fusible interfacings too.

My LQS told me the same thing, and I have used it twice succcessfully.

You are going to be fine, but another tip is to not cut out the final t-shirt "square" until after you have ironed on the interfacing. It will be very stretchy and hard to work with.

I'm so sorry about your grandson. My prayers are with the whole family.

Well, after I posted, I went and cut my T-Shirts and ironed the fuseible, trimed my blocks. So far, so good, have to go back and buy some more fuseible

In case you don't know, wash your T-Shirts, do not use fabric softner , do this before you start to trim.

My T-shirts are Betty Boop and I have Betty Boop material for the sashings.

why the pressing cloth? Thanks

I use a non-woven lightweight fusible interfacing. The "non-woven" part keeps the t-shirts from doing any more stretching~

i always use the light weight trico iron on interfacing

I lost one of my granddaughters (Hannah) when she was 5 yrs old. After a year or so I decided to make a quilt in Hannah's memory for my daughter. I tried to incorporate Hannah's favorite things. She like faries, butterflies and her favorite color was pink. The top was the faries in different pastels, the quilitng was butterflies and the back was pink hearts. I was filled with a lot of different emotions while making the quilt but not only was it worth it to make it for my daughter it also helped me. I hope your project helps you and your family.
Janet