C-Clamp, Singer (Vintage Original) felt if you happen to have

if you happen to have Snap-On feet

Each foot has a notch on either side of the toe so that you could switch from one foot to another depending on the side you needed to stitch

Edge Stitcher

I was being so "precise" that I slipped off the mat and immediately cut my near-perfect

C-Clamp, Singer (Vintage Original) felt if you happen to haveThis is an original Singer (SIMANCO) C Clamp used with the Singer Hand Crank Pinker as well as the Singer Sewhandy Model 20 Child's Sewing Machine. A C Clamp is of necessity for the Pinker and Sewhandy to work properly because it needs to be securely fastened to a table for the crank to turn freely without the pinker and machine shifting. If you have a thicker table or surface than the original c clamp allows, most any new hardware c clamps will work