For almost 20 years I have been sewing upholstery vinyl to what you may call 18-20oz home carpeting…I have uses 2 machines, the cheap, throwaway Brother LX series and Singer heavy Duty-Classic machine and have never had bad results…the problem with those machines is they don’t hold up long tern to the heavy duty material and when they start getting wonky, I just replace them
Fast forward to a few weeks ago, I decided to buy a heavier machine with a walking foot, the Consew CP206RL…about my only considerations were that it was a walking foot, and price…I only sew straight stitches, no zigzag, etc
The needles that came with the machine, 135/17 are the same needles used in my heavy old Consew 255 that has never faltered…with the Brother and Singer Machine I’ve always used Schmetz Nm100 needles and never anything but B69-T70 Bonded Nylon thread
I’ve never had any issues with thread fraying but on the new Consew CP206RL I can't sew more than a few inches of the rough carpet unless the thread frays and finally breaks…it does fine with other heavy materials that don’t have the rough bottom
I guess what I’m asking is, is there a better needle for heavier, stiff, rough backed carpet or any ideas about why this machine and none of the others is fraying the thread
i appreciate all the help