
Sewing Tip | How to Use a Seam Jumper
Is your machine having trouble sewing over thick fabrics or bulky seams? A seam jumper tool can help! This is a common issue when sewing patterns like the Den Jacket (shown in photos) the Isle Jeans or the Sun Tote, and here we'll cover three ways to use a seam jumper (also known as a 'Hump Jumper').
GATHERING SUPPLIES
To begin, you’ll need a few supplies:
- Sewing Machine
- Fresh Needles
- Pins
- Thread
- Seam Jumper Tool (You can find these in many local sewing shops, but they can also be purchased on Wawak here)

USING A SEAM JUMPER FOR TOPSTITCHING
First, we'll cover using a seam jumper to start topstitching the upper pocket on the Den jacket, but this can be applied to topstitching on a variety of projects.
- The seam jumper comes in from behind and goes under the presser foot with the needle centered in the open part of the tool.
- Begin sewing and backstitch as needed, being careful that the needle is still in the open part of the tool and won’t hit the tool.
- Sew forward a few stitches, lift the presser foot, and remove the seam jumper.
- Finish sewing the seam.
USING A SEAM JUMPER WHEN ATTACHING POCKETS
Often, a sewing machine may have difficulty stitching through the bulk when attaching pockets to a project. When using a seam jumper to help attach pockets, follow these steps.
- Put the seam jumper behind and position the needle at the top of the pocket. Be careful that the needle is centered in the open part of the tool.
- Backstitch as needed, being careful not to hit the tool with the needle.
- Sew forward a few stitches, then lift the presser foot to remove the seam jumper.
- Continue stitching to attach your pocket.
USING A SEAM JUMPER TO SEW OVER BULKY SEAMS
A seam jumper can be used in the middle of stitching to help sew over a bulky seam. Here, it’s shown going over the seam that attaches the top and bottom front bodice of the Den Jacket.-
- Stop sewing before the seam and lift the presser foot.
- Slide the seam jumper under the presser foot.
- Lower presser foot and begin sewing.
- If needed, lift presser foot and move seam jumper forward along the seam.
- When finished, lift presser foot and remove seam jumper.




