dikman

No worries, 25b (I didn't, for one moment, think you were trying to be a jerk).

In that case I'm happy to cede to your greater knowledge/experience. All this is still new to me and as I said I've been doing lots of reading, trying to learn something. It's most likely, then, that I've mis-interpreted what I read. I definitely recall reading about a type of thread that was more UV resistant, and the way it was written I thought that the V referred to that aspect. See, I've already learned something today .

What you're saying makes sense, electrathon. When I started (not very long ago) the guy at the leather place where I bought the leather said that's how to do it. Lots of videos and articles say the same thing, but I did wonder about the fact that I was cutting into the leather itself to do it. It does seem that, like many things, it's not set in stone, so I think I'll try using a creaser to give me my stitching lines. One of the issues that I've had using a groover is that if there's the slightest variation while dragging it along it makes it difficult to correct the "glitches", 'cos it's actually cut into the leather. Red Cent, I've already made my own roller (cost = $0) from a piece of aluminium stock that was the right diameter and already had a hole through the middle, bent up a frame and turned a handle down. Works fine for flattening stitches etc.

As I understand it, electrathon, the main idea behind grooving is to recess the stitches to reduce possible wear. When I first read that, it sounded fairly logical. But is it really necessary? Does it really do any good? I'm asking 'cos I don't know much about anything and am wondering if I'm wasting my time doing it.

That's one of the things I like about it - the (very) basic, agricultural simplicity. I've modified mine a bit, put an adjustment on the springs that pull down the presser foot, smoothed off the teeth a bit on the foot, replaced the spring on the thread adjustment screw with a locking nut ('cos it tended to shift), made a table to give me a flat surface next to the feed area and I'm modifying a bobbin winder from a Singer 201K (the supplied one is a joke). A very useful little machine.

Thanks Wiz, I was wondering whether that could be the case with the coil spring. Looks like I'm not finished with it yet. Oh, and there's no thread release on this machine.

25B, can't remember exactly where, as I've been searching far and wide trying to learn about sewing thread, but I seem to recall that it was to do with a sailmaking site. Gore Tenara is definitely something that I came across (odd name).

No worries, mate. That one would require a fair bit of work to make it fit!

Well, I almost got it right...... Referring to the chart you provided, 69/T70 should measure .292 mm diameter, mine measures roughly .11 mm, so it definitely aint 69. I've contacted the seller to try and find out exactly what it is that they're selling. Oh, and further searching came up with V also being used to indicate a higher UV resistance for the thread!

"Standard" tensioner? What's that look like? The parts breakdown in the manual looks pretty much the same as my 201, so I just assumed it was the same type. If there's a better one to use let me know. It would be nice to repaint it, (Singer black and gold?) seeing that it's flaking off, but that may be sometime down the track. As it's an industrial machine I just assumed that the grey finish was par for the course. I'm thinking of making a small table to fit around the "post" so that I can also have a flat area to lay the work on.

Thanks Art (I think....). So, #69 refers to the Tkt size? Which equates to T70 (Tex), which in turn equals 630 Denier.

I went out to play with it a bit more, and think I've got it! I've identified three issues. 1. I wasn't holding the thread tight enough at the start (LumpenDoodle2 was right in that regard). This was allowing it to pull back into the shuttle. 2. It needs a lot more tension on the upper (needle) thread than I thought it would need. I'll need to look at my tensioner, as it's almost maxxed out tension-wise now. 3. There is a "bobbin case lever" to the left of the hook. Its function is to turn the bobbin case very slightly, at the right moment, to allow the needle thread to slide past the bobbin case. It looked like it was working ok at first, but then I noticed that there seemed to be a very slight resistance to the thread sliding between the lever and the case. I re-adjusted it slightly (we're talking 1mm here!) and that looked like the final piece to the puzzle. I ran a quick stitch on a piece of 4-5 oz. veg-tan and didn't look too bad. I then tried it glued to a piece of 7-8 oz, the first run was ok but the second broke the needle (mainly due to the lack of slow speed control). The larger pulley I fitted actually works quite well on thinner stuff, giving me reasonable control, but on thicker material it jams if I start real slow. If I can rig up a pulley reduction system that should solve that problem. So far it's cost me $36 for the neoprene for the belt and $20 for the junked 201K (for the tensioner). Not too bad, considering what the machine is probably capable of . Thanks for all the help, folks.

The title pretty well sums it up!! I recently ordered some "#69" thread. When it arrived I noticed that the spool is marked "210D", which I assume refers to Denier rating? I then spent some time looking at various conversion charts, and researching thread designations, and came away very confused!!! So, what does "#69" mean? Does it refer to Tex sizing? If so, that doesn't convert to 210D. I also expected the thread to be thicker, as it doesn't look much different, size-wise, to ordinary cotton thread that I have. And I thought needle sizing was confusing.

I have been holding the thread, but it still did it. I think, though, that the problem is definitely the top (needle) thread being caught somehow by the pickup hook on the shuttle. That would indicate slack thread somewhere. A bit frustrating, but I figure I must be close to getting it working - I'm just not game to run the motor until I know it will do a reliable hand stitch.

So, I've got it working - almost. Made a suitable tensioner from the 201K I bought, fixed the thread guides (missing springs), re-timed the shuttle and re-adjusted the needle hook, made a new drive belt from neoprene, fitted a larger pulley to the handwheel to try and slow it down a bit (original is 2" diam, new one is 4"), re-connected the pedal for lifting the roller wheel and gave it a good oiling. Oh, and I took to the table with a circular saw (much too big!). Running without thread it punches through leather quite nicely, and while it will do 1/4" it's really at it's limit doing it. I loaded it with thread (the bonded stuff that came with it) and ran it by hand to see what would happen. The needle picked up the bobbin thread ok, and watching the shuttle it appears to be working ok, but for some reason it seems to drag extra thread down into the shuttle (through the needle hole) from underneath the material. I can get a row of stitches, but when I remove the material there are about three lines of thread disappering down the hole! I'm a bit perplexed at the moment.......

If the awl is made of good quality steel, then I'd be surprised if sandpaper or files would do much, as I would expect the steel to be hardened and tempered (if you can use a file on it, then it's what I would call pretty "ordinary" steel). An oilstone should do it, but it may take a lot of work. Best thing would be a water-cooled grinding wheel. If you use an ordinary bench grinder be very careful, as it will overheat the steel in nothing flat and basically leave you with a sharpened iron nail!

For those who may be interested, the tensioner from my 201 has the same mounting system, i.e. a shaft extends from the rear of the tensioner assembly and slides into a hole in the machine body, where it's held in place by a locking grub screw. Main problem is the shaft is too short to lock in place. I located a used Singer 201K today (this is a later model than mine and has an electric motor) for $20 (!) so I went for a drive to grab it, as I figure just buying a tensioner assembly - if I can find one - would cost me more than that. I'll strip it for parts and dump the body, as it has no real collectable value, and this should give me a good supply of the various screws that Singer use. Extending the tensioner shaft is going to be a bit tricky, however, as the rear shaft is steel and is pressed into the front part, which is aluminium!! A bit more pondering is in order........

As the saying goes "great minds think alike", Constabulary . I have a Singer 201K hand-crank unit, and looking at the tensioner assembly it looks pretty similar, so I'm going to remove it today and see what it will take to fit it. The only other thing I don't have is the thread roller which fits below the tensioner, but it may not be necessary for my needs. If I do need it, then I'll make one.

Thanks Evo, that's the same as the one I already found .

Thanks guys. I've spent a fair bit of time searching the 'net, and there's not what I would call a lot of info about this particular machine. I've got the user instructions (which at least tells me how to reset the shuttle timing) and a parts list, but I suspect that this isn't going to be much use as I haven't been able to find any spares listed anywhere. I know it was made at the Bridgeport plant in the US, and is rated to 2500 stitches/minute!!! I got it hooked up to the motor (beautiful old motor) and had it running briefly - until the leather belt snapped! My biggest problem is the missing thread tensioner assembly. I will have to try and find something from an older Singer and adapt it to fit. The owner said something was broken, but it turned out that he was wrong (he admitted he doesn't know anything about it mechanically), I found that there is a locking collar (for want of a better description) on the top shaft, and this had been tightened to stop any rotation. I'm guessing that this is to help with re-timing the shuttle, which I have to do as I removed the drive belt while trying to figure out whether the problem was in the upper part or the lower shuttle area (at least this showed me where the problem was). It's a bit of a beast, but should do nicely for my needs, once I get the missing tensioner sorted. Plus the price was right, nothing but a lot of effort dismantling it all to get it home - that motor is heavy!!

A friend rang today and said he had an "industrial" sewing machine, was I interested? Of course, says I (although I was aware that many so-called industrial machines aren't. Anyhow, turns out it's a Singer 51W59, a bit the worse for wear and unused for a long time, as he said that "something broke" on it. I've got the machine itself and just have to arrange to pick up the table and motor assembly (I could see the Singer label on the motor underneath the table), So, can anyone enlighten me on this particular machine? Just noticed that the thread tensioner is missing.....

Thanks for the reply. I'm going to keep the stamping to a minimum (along the edge of the belt and holsters) so I think I should be ok. With my previous holsters I had to stain before stitching, as I was using a contrasting thread. These will have a brown thread on a brown holster so at least I can stain them after stitching, which should make the job easier. Yes, soaking and molding after staining does make the colour run slightly (and colour my hands!) but it actually worked out quite well, as it evened out the stain a little and gave it a slightly "worn" look, one of those little "accidents" that worked in my favour.

A fellow club member has asked me to make him a gunbelt and holsters. No problem with that, but he wants some decorative stamping/tooling done (which I haven't done before). I'm uncertain about doing the holsters. If I tool the leather while it's flat that should be fine, but if I then soak the holsters to wet-form them around the revolver, will I lose the definition in the tooling through wetting it? It's going to be rather difficult to stamp/tool the holsters once they're formed and stitched, I think. Nearly forgot, I assume that with the belt I stitch the edges first and then case it and stamp it?

As suggested, I've ordered some #69 bonded thread. I've also sorted out the breaking thread issue. I figured it had to be the shuttle timing, as I'd dismantled it all to smooth out the sliding parts and grease them. It just took a little while to work out the correct operating sequence. Now I need to make a new presser foot, one that is height-adjustable. And a decent bobbin winder. The beauty of this thing is that it's so primitive that it's easy to work on! (I also found another post on here about the Able 290, which is the same machine).

Thanks guys. The needle that came with it appears to be the same as the 15x1 in my little Singer 201K. The length of the needle looks fine when it's operating, but a bit more investigation is obviously necessary. By the way, I only use a machine to pre-punch the holes and then use an awl to open them up for the stitching needles. This gives me uniform spacing as well as making it easier to get the awl through the leather.