Different Servo Motors

[yutaoy]

I got the machine! Wiz! love it! should get new thread, got old thread from nice owner, always stuck and broke.

Wiz, this pfaff 1245 have nice stich, when owner showing me + sewing by myself, stich was beautiful and STRAIGHT. tonight I tried on soft leather, stich was not straight sometimes. is because I didn't hold leather right? or ... this afternoon when I test at owner's place, we tried vege tanned leather/heavy thread, was really beautiful and straight. I wondering why I tried on soft leather tonight and stich was not straight sometimes. mmm...

also Do I have always to adjust tention when I change fabric/when add more layers? about stich lenght, is "thinner fabric narrower stich length? thicker fabric wider stich length"?

pfaff 1245 Needle Size Information:

#207 top thread and #138 Bobbin thread use a #23/160 needle

#138 top thread and #138 Bobbin thread use a #22/140 needle

#92 top thread and a #92 or #69 bobbin thread use a #21/120 needle

#69 top thread and a #69 bobbin thread use a #20/110 needle

think I will not use thread over 207, but can I use thread under 69?

So happy and really thank you guys here for helping me all the time

Edited December 17, 2012 by yutaoy

[Ash]

interested in this thread, 'cause I've purchased the same machine as well!

[yutaoy]

Ash, you have newer 1245 or pfaff 1245-706? is your stich not straight sometimes?

[Ash]

Hi, it's a good question! I've buyed it but it's in the shop now waiting for some changes, so I don't know about the stitch. I only tried once before purchasing it.

It's a 1245 grey, so it's older than yours, but it is in very good condition and completely restored... I hope I will receive it this week, then I will try to answer your questions

[Wizcrafts]

I got the machine! Wiz! love it! should get new thread, got old thread from nice owner, always stuck and broke.

Wiz, this pfaff 1245 have nice stich, when owner showing me + sewing by myself, stich was beautiful and STRAIGHT. tonight I tried on soft leather, stich was not straight sometimes. is because I didn't hold leather right? or ... this afternoon when I test at owner's place, we tried vege tanned leather/heavy thread, was really beautiful and straight. I wondering why I tried on soft leather tonight and stich was not straight sometimes. mmm...

also Do I have always to adjust tention when I change fabric/when add more layers? about stich lenght, is "thinner fabric narrower stich length? thicker fabric wider stich length"?

pfaff 1245 Needle Size Information:

#207 top thread and #138 Bobbin thread use a #23/160 needle

#138 top thread and #138 Bobbin thread use a #22/140 needle

#92 top thread and a #92 or #69 bobbin thread use a #21/120 needle

#69 top thread and a #69 bobbin thread use a #20/110 needle

think I will not use thread over 207, but can I use thread under 69?

So happy and really thank you guys here for helping me all the time

Congratulations! Go buy some sewing machine oil and keep the machine well oiled.

We all have to change tensions when going from thin or soft work to thick, or dense material. You will get a feel for this after a while. Always keep some scraps from each project and use them to balance your thread tensions first. I tend to keep a modest pull on the bobbin thread and mostly change the top tension for differences in thread or work load.

Needle size also impacts where the knots appear. A proper needle makes a hole just big enough for the knots to be pulled up into the material. A smaller needle makes a tighter stitch, but requires more top tension to pull the knots up. A larger needle pokes a bigger hole and you get looser stitches, but it takes less tension to position the knots.

Too much bobbin tension, offset by equally strong top tension, can warp straps and belts. Use the amount of tension required top get a nice stitch, without warping the leather or cloth. Soft leather, like garment leather warps easily. Reduce the bobbin and top tensions to get the stitches to lay flat on the top and bottom.

You can get smaller needles, in type 134-35, for thinner threads. Most cotton thread is sewn using a #11 or #12 needle (75 or 80 metric). If you want to sew with #46 bonded nylon, a #12 or #14 needle will do the trick. Buy leather point needles for leather and standard round points for cloth and webbing.

Edited December 17, 2012 by Wizcrafts

[Ash]

Ash, you have newer 1245 or pfaff 1245-706? is your stich not straight sometimes?

Hi

I've received it!!

it's a 1245-706

I tried only a little, I need to regulate thread tension and needle size.

What do you mean with "is your stich not straight sometimes"? That is angled or what?