It simply amazes me how many different kinds of attachments there are. From one box to another, surprises await. I'll be posting more pics as to the shank attachment and then the feet themselves tomorrow.
It is good to know the reason for the hole in the shank, that quilting guide is rather useful. My Reversew 40's owners manual has great instructions and a few pics for the attachments as guides. If anyone is interested, send me a PM and I'll scan them to you.
Now if I could only figure out how the underbraider and other guides fit into my machines...

[ATTACH=CONFIG]325381[/ATTACH]
This is what I was attempting to describe earlier.

There is a slight taper at the top to help that clamp stay clamped. The top clamp attachment holder fits beautifully, as does the back clamp straight foot that came with the machine.

The quilting guide hole is visible but I am unsure as to how it is held in place.

[ATTACH=CONFIG]325383[/ATTACH]
What does this one do? The slotted hole(s)- one is a hole with a slot cut into it, the other is merely a long slot- have me quite curious!

I just saw this posting. There are quite a few sites selling walking feet for the 301's. Just a warning. NONE of them work as they should. There are no walking feet on the market with the correct width feed dogs to match the narrow feed dogs on the 301. They are all too wide. So...will a slant walking foot work? Kind of. But, it won't feed the fabric through as a walking foot was engineered to do. The feed dogs of the walking foot are SUPPOSED to align with the machine feed dogs to guide fabric through. Just because the foot fits the machine and doesn't break a needle, doesn't mean it actually does a good job;> I own 4 301's and although I love, love them for FMQ and piecing, I quilt on other machines. Hope this helps save you some money.

Here is the link to the thread on spring attachments: http://www.quiltingboard.com/vintage...s-t183629.html

Thank you for the link. I checked it out and found good information.