Make a Motor Pulley for Sewing Machine

Sometimes finding the right replacement part for an old machine is near impossible. It may be easier to build one from scratch. here is how to build a 3/4 inch pulley for an old sewing machine.
 I Made it at TechShop (Chandler)  http://www.techshop.ws

Materials and tools:
3/4" x 4" steel rod
8-32 thread tap
8-32 set screw
1/8" drill bit
1/4" drill bit
center drill
drill press
Metal Lathe
HSS lathe bit
sandpaper

I found a spec sheet for different size pulleys on google. Grind your bit to 16 degrees per side to make a 32 degree v-groove.

Cut groove till it is the correct diameter from the drawing. cut the width so it matches the drawing.

Use plenty of cutting oil

Use plenty of cutting oil

I also polished the pulley a little.