Great idea it sounds so simple, but I am sure it isn't for me anyway. I have never heard of anyone using plexiglass but have heard of steel and cardboard,lol, this is just ingenious I think. Awesome to be able to see through it and see the machine and thread working. Wonderful, wonderful wonderful.

wonderful idea

A "standard" Singer 66 plate is .085 thick. Yes, you can get plexiglass (lexan, or "acrylic sheet") in various thicknesses. I used what I had on hand, which was .100 thick, and the material has to ride over it. However, you can get it in thicknesses of .08, .093, .118... I would have measured it with my caliper if I were buying new, but knowing now that the Singer plate is .085 I would have tried either .08 or .093 thickness. They sell it at Lowe's, Home Depot, ebay...An 18x24 sheet runs about $10 plus tax--I could make two dozen plates out of that, give or take a mistake.

What a great idea!

Why is this piece ALWAYS missing on these old machines? I have passed on many because of this. What a great idea. I have a Ma an Pa hardware store down the street and they have cut Plexiglas for me on many occasions for other things. Thanks so much for sharing this.

I'm going, right now to trace around my bobbin plate for a future need of making one! Thanks for the idea!!

When I go to thrift shops I often see the throat plate missing. Great idea! Thanks for sharing!

All the " new" ones have plexi covers, so why not do for the "oldies" too!

Hi and welcome to QB, Addiction!
I kinda laughed as I typed that, as I sometimes feel like I have a QB addiction..lol.
Thanks for sharing such a great (and thrifty) idea!

Regards,
K