georgeandgracie Report post Posted December 20, 2013 My machine - Consew 206RB - came with size 92 nylon thread so I started out with that. Thinking that nylon is a bit wiry, I switched to polyester and am none too impressed. It shreds. Do I have to wax it all by hand? With waxed canvas, which in my case is 10.1 ounce, is it possible to get a stitch line that is balanced on both sides? I have never achieved that, but I think I got closer with the nylon. Quote Share this post Link to post Share on other sites
Sovran81 Report post Posted December 20, 2013 I use 138 and 207 bonded nylon on my 206RB-5. I sew between 4-18oz. I have to adjust the top thread tension when either changing thickness or leather type to keep the knots in the middle. Make sure your needle size is matched to the thread and is installed properly. Make sure you dont have lint or other debris in the bobbin or feed dog areas. Make sure your thread path is correct. Quote Share this post Link to post Share on other sites
georgeandgracie Report post Posted December 21, 2013 I put black thread on top and red thread in the bobbin. The stitching does not show dots of red on top, nor does it show dots of black on the bottom. On the bottom there's just a little divot of the waxed canvas between each stitch. Is this what it is supposed to look like? My manual is a digital copy of a photocopy of a photocopy. The pictures are so terrible that I really can't tell visually how the thread should be routed. I just try to follow the text description and hope I'm right. Quote Share this post Link to post Share on other sites
Anne Bonnys Locker Report post Posted January 9, 2014 There is a massive difference between polyester, High Tenacity Polyester and bonded Polyester. My personal belief is that high tenacity poly is the best all round thread. I have seen too many machines damaged by long term use of bonded nylon and it has nowhere near the UV resistance of HT Poly Quote Share this post Link to post Share on other sites
georgeandgracie Report post Posted January 9, 2014 Is Tenara the same thing as HT Poly? Quote Share this post Link to post Share on other sites
TXAG Report post Posted January 9, 2014 (edited) I have seen too many machines damaged by long term use of bonded nylon How does bonded nylon thread damage machines? I use this exclusively when I make my military products...(#69 bonded nylon...sometimes #92) Edited January 9, 2014 by TXAG Quote Share this post Link to post Share on other sites
Tejas Report post Posted January 9, 2014 Tenara is a sub-brand of Gore and is made of PTFE (polytetrafluoroethylene). It seems to be a monofilament and does not seem to require as much needle tension as polyester. It is quite strong and cannot be cut with a hot knife. Quote Share this post Link to post Share on other sites
Anne Bonnys Locker Report post Posted January 10, 2014 I have worked on a lot of older machines - particularly Singer 7 and 132k6 - that have been running bonded nylon in larger sizes over a period of decades. It tends to eat into the tension posts and take up leaver as it has a very hard finish. It could be that the quality of bonded nylon in the US is of a higher standard than that available here. Quote Share this post Link to post Share on other sites
TXAG Report post Posted January 10, 2014 I have worked on a lot of older machines - particularly Singer 7 and 132k6 - that have been running bonded nylon in larger sizes over a period of decades. It tends to eat into the tension posts and take up leaver as it has a very hard finish. It could be that the quality of bonded nylon in the US is of a higher standard than that available here. Ahh. Ok, well I've been using bonded nylon E thread in my machines for years and never had any problems...it does seem to generate a lot of residue (lint) inside the machine, but I clean it out frequently. Never noticed any issues, but then again it's not a regular home (plastic-y) unit...the parts on my machine are pretty robust... Quote Share this post Link to post Share on other sites
