dirtclod Posted March 13, 2014 Report Posted March 13, 2014 IMHO 138 on 2 ounce leather is to heavy. Try some 69 thread and see what happens, or try the 138 on the 2 ounce doubled and see what happens. Quote I'm old enough to know that i don't know everything.
Members Cole Posted March 13, 2014 Author Members Report Posted March 13, 2014 Dirtclod i ran 138 on top and 69 on bottom its a mess Quote
Moderator Wizcrafts Posted March 13, 2014 Moderator Report Posted March 13, 2014 Size 138 (T135) bonded thread is best used in 1/8 inch of leather. Under that, I recommend #92 into 4-7 ounces, or #69 into 2 - 4 ounces. It is foolhardy to mix 138 on top and 69 in the bobbin. It makes no sense at all and is pert near impossible to balance the knots. If you only need 10 or 11 pounds breaking strength, just use #69, top and bottom, with a #16 or #18 needle. If you need more strength in thin leather, try #92 thread using a #19 or 20 needle. Quote 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.
Members Cole Posted March 14, 2014 Author Members Report Posted March 14, 2014 I used the 138 that came with the machine. Andwas still having trouble. Im not educated on thread or needles is there a resource to help me with it? Quote
Tree Reaper Posted March 14, 2014 Report Posted March 14, 2014 This is a chart from Bob's site. http://www.tolindsewmach.com/thread-chart.html Quote
Moderator Wizcrafts Posted March 14, 2014 Moderator Report Posted March 14, 2014 The chart that Tree Reaper linked to is an excellent guide for matching thread to needles. In your case, since the machine came with #138 bonded thread, it should also have #23 (Metric 160) needles with it. You should wind some #138 onto a bobbin and try again. #138 thread, top and bottom, is best sewn with a #23 needle. If you are sewing leather, a leather point needle works best. Quote 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.
Members Cole Posted March 14, 2014 Author Members Report Posted March 14, 2014 Thanks tree reaper...im gonna print this .... Thanks tree reaper...im gonna print this .... Quote
Tree Reaper Posted March 14, 2014 Report Posted March 14, 2014 I want to make a correction on the thread tension. Today I measured the tension using a trigger gauge which is relatively accurate and these are the measurements. Combined leather thickness is 7 oz. Top thread tension out of the needle is 8 oz. Bobbin thread tension is 2.5 lbs. This is with 138 thread. Quote
Northmount Posted March 14, 2014 Report Posted March 14, 2014 I want to make a correction on the thread tension. Bobbin thread tension is 2.5 lbs. 2.5 lbs. bottom tension.JPG I assume you mean oz. instead of lbs? Tom Quote
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.