I have a 30" Pexto stake plate given to me many years ago when I still had dreams of building a forge. Having not used it in all these years I thought you might be able to use it in your new teaching facility.
If you contact me at jkahn3@verizon.net or through my website jeffkahnsculpture.com
I will send you pictures so you can decide if you want it.
I would be happy to send it to you as it is just taking up shelf space.