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I am never comfortable when people say one machine is all you need. Every serious leather worker has at least three machines but 5 or six is better........

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If you look at the pictures I posted earlier, The top of the project has what I would call a normal thread look, The bottom side seems to have a tight look to it, the holes seem to be streched and the thread appears to be being pulled tighter into the leather. This is only a problem when the leather gets thicker. I am using 4 to 5 oz lined, on the edge where it gets 4 layers thick I get this issue. I am sure it is a adjustment but not sure what to adjust as the manual states counter clockwise etc but I am not sure if I should rotate the AUX tension, Thread tension, or Bobbin tension.

For one thing, the back side stitches always look different than the top (on sewing machines). But, it seems to my eye that the bobbin tension could stand to be backed off somewhat. This will allow the bottom thread to lay looser across the holes. If you have less bobbin tension, you'll probably have to also back off the top tension, to balance the knots. I use my machine with relaxed top and bottom tensions, but adjust them to suit the work.

Posted IMHO, by Wiz

My current crop of sewing machines:

Cowboy CB4500, Singer 107w3, Singer 139w109, Singer 168G101, Singer 29k71, Singer 31-15, Singer 111w103, Singer 211G156, Adler 30-7 on power stand, Techsew 2700, Fortuna power skiver and a Pfaff 4 thread 2 needle serger.

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Posted

Wiz is the man.

When setting machines up for customers I tend to start with relatively light tensions and let the customer tighten them up to suit.

Apart from getting the threads to "knot" in the center of the work there are variations in appearance that customers want to achieve depending on the work they are doing.

Tensions are both simpler and more complicated than what is normally discussed ;)

For one thing, the back side stitches always look different than the top (on sewing machines). But, it seems to my eye that the bobbin tension could stand to be backed off somewhat. This will allow the bottom thread to lay looser across the holes. If you have less bobbin tension, you'll probably have to also back off the top tension, to balance the knots. I use my machine with relaxed top and bottom tensions, but adjust them to suit the work.

Posted

If you don't like the tight look,then yes,you need to loosen the top tension even the aux one too until you get the look you want.

Bob Kovar
Toledo Industrial Sewing Machine Sales Ltd.
3631 Marine Rd
Toledo,Ohio 43609
1-866-362-7397

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