Here is another file that I made for a project a while ago, though I didn’t end up using it. It can be used either as a ribbon slide, or as a scalloped mat with or without ribbon since the inner oval completely covers the ribbon slots.
The download is a zip file with a layered svg file for use with any version of SCAL and a DXF file.
My files are for personal use only. Feel free to link to this post, but the files are not to be shared or distributed in any way.
Download the files here.