| After purchasing my Babylock Imagine [ which dose not have a waste box on it ] I have struggled with the scrap bag that came with the 'Serger Pad / Trim Catcher' that I got to take care of the serger trim waste.
[For the type of serger bag I am talking about please see photo in photo album above, I am sorry I don't know how to insert the photo on this page. Hope this helps ].
The bag that came with this catcher is always so hard to replace after emptying . I have finally come up with a good solution that works well for me. I made a bag out of stretchy knit, very thin spandex type knit . I think you call it spandex type. Lots of stretch anyway.
I used the bag that came with the catcher as my pattern and tapered the top just a little, maybe 1/2 " or so . I folded the fabric so the top would have the salvaged edge. I then cut it out & serged the side & bottom, turned it inside out and put it on ring. I pulled it up to go over the top of the ring,or clip [that fits into the bag ], the top will then cup around this retaining ring and will stay nicely in place.