The traditional secret door wouldn't work well for Towne tiles, as the seam would be visible. So we nave this set, where the whole wall can be removed. As a side note, these secret doors also make for towne walls that are much faster to paint because you don't have to do the painting with quite so much care.
The base and the wall inserts do have holes for magnets, but it snaps well enough that there's no real need for them unless you find yours is somewhat loose.
Thingiverse seems to have gotten past some of their major bugs, so I'm giving it a shot again. Grab the files:
Masterwork Tools
2021-02-03 03:43:10 +0000 UTCTim Wascoe
2021-02-03 03:10:39 +0000 UTCManfred Geiler
2021-02-01 08:56:45 +0000 UTC