Answer:

Realizing the nature of the fabric will make a difference on the size and type of needle used on the machine. When it comes to leather, once the needle goes through the leather, that hole stays. With other woven fabrics, a needle is pushing aside the strands in the fabric and in both the machine is carrying the thread and locking in place as the needle goes through. Leather needles can be completely different with a knife-like on about half of it to pierce the leather better. Sometimes, a heavy enough needle might work depending on the weight of the leather and even for things like canvas or denim.

With the consideration of the weight of the materials used, the type and weight of thread is another thing to consider. Will it hold up during use of the creation? You won’t use the same thread to sew leather to sew up a silken creation.

While considering the materials and the tools to cut and sew, not every sewing machine would have the strength to sew just anything and get the job done. The things I’ve mentioned are likely something to consider when putting together a tool box for any sewer