New belts will shred sometimes until they get the coating worn off.
Yes,hold on to the threads(esp.the needle thread) to first 3-4 stitches,towards the back or rightside.
On the bobbin thread you will probably end up knowing afterwhile how much you can sew before it runs out,but for now you'll just have to pull it out & look @ it once in a while.
Yes ,a #26 is the correct size & when you thread it make sure you go around the 2nd tension 1 & 1/2x,Also you will probably need to tighten the upper tension for this 346 also.Also did you hold the needle thread for the first 3-4 stitches?
I set a needlefeed 111W up once for an Amish guy that wanted to sew belts & worked but was pretty hard to treadle ,we stuck a walking foot 111w in the stand & it really took alot more foot power than the needlefeed.The walking foot 111w has alot of resistance going on when it walks it makes it hard to treadle.The older mchine like 29 & 42-3 have large wheels & the walking foot works different & they will spin & go around -3 x when you do it if they are oiled good.It might help a 111 treadle easier if you could find a heavier handwheel w/a small pulley.One like what's on the 42-5.
Which bobbins are you using,I've had people w/the same problem that bought cheap bobbin off flea-bay,they were out of round.Try pulling on the bobbin thread n& see if there's any tight spots.
Loose threads on the bottom like that is one of 2-things #1 threaded incorrectly,make sure you go around the 2nd tension on the side 1&1/2x when threading. #2 too loose top tension,you also need to be sure & hold on to the needle thread for the first 3-4 stitches when you start sewing.So if it's threaded correctly tighten you top tension 1/2 turn @ a time.
I don't know what the big deal is where it's made?I think that unless your using it 24/7 in production you will never notice a difference.We sold some new 206's to NASA over a year ago & they ordered 2 more this year.We also have canvas & upholstery shops that run them pretty hard & they hold up great.It has more to do with how they are oiled than anything else.
I don't know much about this machine but have one like it that sews.I thought it might have been made to sew harness since it has such a high foot lift.I don't have any manuals for it.
Hey Colt we'll keep one ready for ya!
We had a customer that makes holsters & belts tell that the machine paid for itself in less than 3-months & he's had it now for over 3 yrs.