Pfaff 545 Thread size max

[Wizcrafts]

1 hour ago, Leebroox said:

I will probably switch to #21 or #19 and 138 or 92 thread, if I cannot get the 207 to take like I want

I use a #19 needle with v92 and a #22 or #23 with v138 bonded thread. If you use a needle that is too small it makes tighter holes and the take-up lever has to work harder to pull the knots up. It also tends to lift the leather as the threaded, knotted needle ascends. This causes missed stitches and ratted top thread.

Here's a needle and thread chart that I consult.

[shoepatcher]

Smallest needle you can use #138 on is #22.  I use #23 titanium coated.  Less deflection and the coating makes the needle slide easier thru leather.

glenn