This site shows the one that I have. https://napasewandvac.com/the-hump-jumper/

It's a piece of plastic that you put either behind or in front of your foot to keep the foot even and thus sewing. I've used them in many projects for years. They work great and are very inexpensive. I have the same set I bought in probably the late 80's. They're still fine and have been used a lot.

Tranum, a Jean A Ma Jig is sort of the same thing.

The hump jumper/Jean A Ma Jig is a wonderful little gadget for
thick seams. Didn't even realize until recently that I had one that came
with my Janome. They call it a 'Button shank plate'. https://cdn.quiltingboard.com/images...s/rolleyes.png

I purchased a Sailrite Fabricator industrial machine. You can go to their website, sailrite.com to see more. The machine is decently priced and it will go thru denim, seat belts, canvas and the like. I make purses, totes and bags and this machine stitches thru several layers of denim especially when I'm making handles and then attaching handles to the bags. I'm very pleased with this machine and their customer service. They have several demonstrations and information on their machine on YouTube as well. Great machine and I'm very pleased with this product.

Forgot all about the Sailrite machines - will have to bookmark that info for the future. Thanks for sharing!

Hi, Can you let me know how often you oil the 6 points on your Juki (in relation to hours of sewing)? Thanks!

I'm sure this will receive varying responses but in my case I oil the six points "frequently" which equates to approximately 8-10 hours of sewing. One little drop unless I can hear the need for more or sooner.

Thanks so much for the quick reply!