dikman

Zac, that is a fairly generic type of servo from China. I bought a similar one recently, it has a different control box but specs are pretty much the same, as was the price. I haven't used it much but it seems to work ok. I also had another similar one but sold it with a machine, no problems with that one either. These motors work better for leather if you either fit a speed reducer or replace the hand wheel with a larger pulley. That's not to say that they don't work as they are, but the mods give greater slow speed control and more torque. Replacing the motor pulley with a 2" one helps too. If you can successfully control a clutch motor then you'll have no problems with a servo. Fyi, my first servos were bought from China about 3-4 years ago, using Aliexpress, and cost me between $190 - $250. They are now being sold here on ebay cheaper than you can buy the same thing from China! I have seen ones like Pinto posted here in Oz for around $400!!

Looks like she's working well.

Hmm, they might be a bit too strong, you don't want too much extra tension or you will lose sensitivity in operating the pedal. You really only want something to balance the "dead" weight of the cast iron in the pedal.

A lot of forums got caught out with photobucket!! it made a lot of posts virtually useless overnight.

You make a good point. I have had pretty much all that you list happen to me (not all at once, of course) which is one of the reasons I want my machines to sew very slow!! There is an element of skill involved in using a machine - understanding how it sews, correct needle and thread for the project, balancing thread tensions etc. Definitely not as simple as hand stitching.

Nice. You guys get to make some cool holsters over there.

Yep, that's the stuff, but mine was a bit thinner than your typical cord. I'm glad you're going to re-do the linkage, it had me worried.

I have the same type of pedal on the Pfaff table and it's pretty heavy, with weight forward! I just used a piece of elastic strap, from the front of the pedal to the cross support of the table frame, to take some of the weight off the pedal. Not a particularly elegant solution but it's simple and it works.

You and me both, brother.

Nicely done, I'm sure that someone else will find this useful at some point. I've never seen anyone use a woodworking plane to bevel the edges, first time for everything. The only negative thing I can say is please mount it on a decent solid bench, I got a bit seasick with everything wobbling around!

Only took you 9 years to get back to your post. Can't rush these things, I guess. It came up pretty good.

Very neat. Quite complex, just for holding gloves.

. I even heard the voice of HAL when I read that!

Unfortunately, I don't have the contacts to smuggle one in. (Not saying that's what you did, of course).

Found a video on youtube where a chap fitted a drill chuck to the bottom of the ram to hold tools, looks like a good use for an old chuck. Got me thinking, as I have an old chuck that is a bit too worn for the drill press but would be fine for this. Looks like I'm back to drilling a hole in the end of the ram!!

Well done, it's always satisfying to work something out yourself, and as you said, just think what you've learned!

As I mentioned elsewhere, with regard to importing a 441 head unit only, I went through a long process trying to bring one in at a good price and found it couldn't be done (not as an individual). A fellow member on here, in the US, went through the same process and found likewise, it simply wasn't worth the trouble for the few dollars saved. If you were a business, buying a container load at a time, then you would doubtless get them at a better price per unit and all the other costs - shipping, customs etc - would also work out significantly less due to economies-of-scale. But for an individual it's simply not worth the effort. Some Chinese companies I contacted were offering "warranty support" but just how effective that would be is probably open to conjecture, plus those offering support were invariably at the high end price-wise. Adjusting and timing a machine is no big deal and you would have to assume that any such machine you brought in would need that done. The problem would be if you have broken/damaged parts, so you have to be able to buy it cheap enough to offset the possibility that you may have to source such parts locally. I have yet to see any figures that demonstrate it is viable/cost effective for an individual to bring in a sewing machine from China.

This is what I ended up with. The "inserts" are pretty easy to make from cylindrical scrap bits and I'll make a few with different size holes which should take most punches, rivet setters etc. As you can see similar to jimi's and Rocky's.

Now that IS an interesting concept.

Personally, I think brush motors are smoother at lower speed but unfortunately most of the servos are now brushless.

Jimi, that's the concept I'm working on. Constabulary, you can never have too many tools! When I bought the press he also had one of those smallish table saws, so I jokingly offered $20, he said $30 so I took it! It won't handle big panels, of course, but will come in handy for smaller bits of wood.

If you want both a needle positioner and a speed reducer have the dealer fit it to make sure it will work as some servos can't work with both. Personally, I can't see the point of having both, as Wiz said if you have a speed reducer you should be able to control it sufficiently well to stop it where you want.

Thanks Brian. I'm working on a "negative" image of yours, for want of a better term. I've got a short cylinder to weld to the bottom of the ram, a short piece of thick-walled pipe fits over it and is held on by a couple of locking screws. I will the fit different inserts into the cylinder. The inserts will have different size holes in them to take different diameter fittings and a single screw through the pipe and insert will lock the tool in place. I then just have to make an insert and drill it to whatever size I need to fit something new. I've got 3 other presses with fittings for rivets, snaps etc but this one I want to be able to fit hole punches, cutters etc.as well. I'll post some photos when it's finished. What sort of pressure has that thing got? It looks big!

Referring to the noise, sometimes the mind plays tricks on us, and when you haven't used something (particularly mechanical) for a while and come back to it you can suddenly notice a noise that was always there but you weren't aware of it before. And walking foot machines are a bit noisy simply because of their nature. It sounds ok to me. Oiling - use the oil holes but take off all the removable covers and basically oil any parts that contact each other, slide, rotate etc. Look for little holes in the castings above shafts where you can drip in oil.

It does, mike, but I would have to fabricate a jig to hold it vertical and square - too much trouble. I'm going to explore the idea of a round piece welded to the end, it has possibilities.