This is a replacement plug for PFAFF Hobbymatic 919-1 sewing machine foot control (pedal+AC cable). I got the machine without the foot control and decided to reuse an older pedal from a different manufacturer, however these plugs are not available separately.

The plug is very basic in design and uses metal prong connectors (terminals) from a generic wall tap adapter (I used an US model tap adapter so European ones might have different dimensions). I included the original FreeCAD models so feel free to adapt the design for your own purposes. The models are made with simple solids and cutouts. The plug is printed rather crudely due to my printer limitations however the models are more smooth.

I used old Kenmore 1.2 A foot control that also has three terminals (live AC+pedal, neutral AC, neutral pedal), the wire thickness is 18 AWG. The wiring is important with this one. Refer to the pictures I provide. In short, two live wires go to the central connector and two neutral (one from pedal, another from AC cable) go on the sides but make sure you follow the right order. It's the same design PFAFF uses in their pedals.

The plug is glued together after the wires and terminals are soldered so the structural integrity and insulation are maintained and to prevent wires from jiggling inside. I used epoxy glue. If you prefer to use screw terminals or a screw to hold the plug together make sure you have enough space to accommodate them, you might need to adjust the model. I removed the wire divider on the top part in the final model (you still can see it on one of the photos) because the wires were a bit too thick to fit in with it; it's unnecessary as wires have the bottom divider anyway which holds them snugly.

Here is the compatibility list for this foot control in case you have a different machine and wonder if it will work with yours:

PFAFF SELECT 2.0 3.0 4.0, PFAFF 150 SELECT, PFAFF DUALMATIC 955, PFAFF HOBBYMATIC 904 906 907 916 917 919 926 927 933 935 939 946 947 953 955, PFAFF GRITZNER 976, PFAFF 1006 1007 1010 1011 1014 1015 1018 1019, PFAFF TIPMATIC 1035 1045 1047 1047 1050 1051 1119 1120 1147 1150 1151, PFAFF VARIMATIC 1115 876 894 985, PFAFF NEWMATIC 1129, PFAFF 1196 1197 1211 1212 1213 1214 1217, PFAFF SYNCHROMATIC 1216, PFAFF SELECT 1520 1522 1523 1525 1526 1527 1528 1529 1530 1536 1540 1546 1548, PFAFF FREESTYLE 1522, PFAFF STRETCH & JEANS 6091, PFAFF TIPMATIC 6110 6112 6120 6122 6150 6152, PFAFF hobbylock 790 793 794 795 796 797 799, PFAFF Classic Style Quilt 2027. Pretty much any model with 3-prong socket and similar plug design. Obviously google before deciding to use it.