Pictures of the cut-out for my machines
 

I can't figure out how to send pics in a private message, so I guess everyone gets to see them. The metal brackets are right off an old junky cabinet, and I can easily change out my vintage Singers. The 15-91 can be flipped back so you can drop the feed dogs. The 401a has a longer base than the black ones. They have a little extra space to the right of the machine.

This is great! Is that a countertop? Or a modified sewing cabinet?
I totally need something like this. DH will be pleased, another project....

Thank you so very much! I'll put the word out that I need an old cabinet so I can find the hardware. Or maybe Singer has some on their site. I appreciate the pics very much.

I have 2 of these machines , mine that I bought new and the 2nd one is /was my daughter in laws mother's. used mine for loads of sewing through the years, still works. both are in the cabinets they were bought in.

Thank you. We were private messaging, but apparently this platform doesn't allow pictures to be attached to messages.