Since I've been fixing plenty of bugs, figured I should also start versioning my frame mount designs.
The Ikea-frame version should look something like this:
The design for this one lives here
You can download it an open it with Inkscape; remember to switch to outline mode in Inkscape, otherwise you're unlikely to see anything. The frames are designed for a laser engraver, and the cuts are about 1/100'th of a mm.
And the standalone vesion will hopefully look a bit less terrible than this, since this picture is from a few bug-revisions before:
The design for the standalone version: