Which Janome machines does the Bi Level Foot fit?

It is made for Janome 5mm and 7mm models, including the 2030DC, 3160QDC, 4120QDC, 4300QDC, 49360, 5124, 5300QDC, 6019QC, 6050, 6100 and 6125QC. Check your machine's model number against the compatibility list before buying.

What does a bi level foot do that a regular foot does not?

One side of the foot rides on a raised layer while the other stays level, so the needle keeps a constant distance from a fold or seam. That makes topstitching and edge stitching even on thick, uneven layers.

Is it good for bag making?

Yes. Bags often have several thick seams and folded edges, and the foot guides stitching along them at a steady width. It is one of the main uses Janome names for this foot.

Can I use it on denim and wool?

Yes. It is designed for thick materials such as wool, denim and tweed, and helps finish their edges cleanly. Very bulky crossing seams may still need a hump jumper or hand wheel help.

Does it replace my standard presser foot?

No. It is a specialty foot for edge and topstitching work on layered fabric. Keep the standard foot for general sewing, curves and lightweight fabrics.