Thread cord (or nylon gut) through the slot (A) and under the finger (B) of the presser foot (see graphic)
then rotate both the tool and block and use the second centering square for that round to trim the remaining sides
White 534D Sewing Machine Service Manual
The ultimate tool for creating half-square triangle blocks
The completed Lullaby Lucky Star quilt measures approximately 28in by 41in
Lower Looper, Pfaff, Singer #550411 FootControlGetsAssembled Thread cord (or nylon gut)Guaranteed to fit Consew Sewing Machine Models: 14TU5432, 14TU854 Guaranteed to fit Husqvarna Viking Serger Models: Huskylock s15 Guaranteed to fit Singer Serger Models: 14CG744, 14CG754, 14HD854 Heavy Duty, 14SH644, 14SH654, 14SH744, 14SH754, 14SH764, 14U544, 14U554, 14U555, 14U557, HD0400S Guaranteed to fit Pfaff Serger Models: 4762 Hobbylock, 4772 Coverlock, Hobbylock 2. 0 Alternate Part Numbers: 93 415504 11 000, 416325601