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Everything posted by Wizcrafts
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Consew 206-RB4 oiling mechanism and sewing speed?
Wizcrafts replied to sojourner999's topic in Leather Sewing Machines
What you described is the method used on lockstitch sewing machines when one wants a bold top thread appearance, but there is insufficient thickness to hide the knots if the same size thread is used in the bobbin. A thinner bobbin thread bends tighter and won't cause noticeable bumps along the folded down and topstitched seams. I sometimes use this technique when a customer asks to have a belt edge stitched for appearance, but the leather is too thin to hide the knots formed by #138 or #207 thread. Using a thinner bobbin thread lets the knots stay low down, but not sticking out the bottom. Know that anytime you use a thinner bobbin thread, the strength of each stitch is that of the weaker thread. -
Consew 206-RB4 oiling mechanism and sewing speed?
Wizcrafts replied to sojourner999's topic in Leather Sewing Machines
Unless somebody has custom fitted a Juki hook and milled out the chamber it resides in, your bobbins are M style, not U. -
My hope is that as a result of the things discussed in this topic about matching forward and reverse stitch lengths, that the attacks against some of our dealers will stop. No sewing machine is perfect all the time unless it has expensive electronic controls that make it sell for $10k (think Adler 969 ECO). I am happy to be able to buy a heavy leather stitcher for about $3k that does the same sewing, but needs a little adjustment with a shim, or a tweak of a moving part. One of our dealers is a two man shop, another may have three people and another is a division of a larger company that has more employees who don't necessarily specialize in heavy leather stitchers. Resellers of brand name machines, like Cobra, may not have the training or hands-on experience that the official company technician/set-up man has. With the effects of Covid restrictions during 2020 and 2021, some techs and adjusters have been laid off. Some may have moved on to other occupations. There are machines on ocean freighters waiting to be allowed to dock and be unloaded. And, on top of all this, we are now back in a revived Cold War, possibly the blink of an eye, or miscalculation away from World War III. And ya'll are bitchin about reverse not perfectly aligning with forward! Most of my sewing machines don't even have reverse levers.
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My hope is that as a result of the things discussed in this topic about matching forward and reverse stitch lengths, that the assault against our dealers will stop. No machine is perfect all the time unless it has expensive electronic controls that make it sell for $10k (think Adler 969 ECO). I am happy to be able to buy a heavy leather stitcher for about $3k that does the same sewing, but needs a little adjustment with a round washer.
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I used a small washer on my machine. It really does work to correct the reverse, as long as the timing of the inside foot and needle is matched. Until I put a washer under the top of my stitch nacelle, reverse never matched forward 100%. Now it does. It beats laying the machine down and dinking with the internal cams.
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Several Replacement Part Questions - Nakajima TDU-N62
Wizcrafts replied to dandspach's topic in Leather Sewing Machines
The entire problem with that link was that it pointed to http instead of https. I corrected the link so it opens or saves the file without a security warning. I downloaded it and it is safe.- 9 replies
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Leather strap sticking to needle
Wizcrafts replied to Besthorsegear's topic in Leather Sewing Machines
What point does your #25 needle have? The best shape for ease of penetration is the inline S point, followed by the D or tri point. The worst is the round point which tends to get stuck in the leather. You may have to add more foot pressure too if the leather keeps lifting. If you have a pack of #26 needles in S point, try using one instead of the #25. If you have a lube pot on top, fill it with liquid silicon and run the top thread through it. You will need to back off the tension to compensate for the additional drag of going through the pot. -
Leather strap sticking to needle
Wizcrafts replied to Besthorsegear's topic in Leather Sewing Machines
If the OP moves up one needle size, the foot pressure won't need to be increased. This assumes a short step up, like from a 23 to a 24, or a 24 to a 25. I just went through this myself where I tried using a #23 needle with #207 thread on a bridle leather belt. It started lifting immediately. I moved up to a #24 needle and actually was able to back off the foot pressure. -
Leather strap sticking to needle
Wizcrafts replied to Besthorsegear's topic in Leather Sewing Machines
Your needle is too small for the density of the leather and size of the lockstitch knots. Move up on size and the problem should resolve itself. -
The Chandler looks like a Juki LU-563 I used to have. It was a clone of a Singer 111w156. The Singers had G size bobbins that are regarded as 1x capacity. The Juki had a double capacity U bobbin. There is an in-between M bobbin that holds about 1.7x of a Singer G. The Chandler in the photo will probably have either a G or M bobbin. I has compound feed walking feet and probably handles #138 thread. It would be a great fit for your planned sewing work.
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Needles For A Techsew Ga5-1 I
Wizcrafts replied to luvdoneleather's topic in Leather Sewing Machines
Call Bob Kovar, Toledo Industrial Sewing Machines, at: 866-362-7397 to order needles and bobbins for your machine. -
I do zipper replacements and repairs in my shop in Mid-Michigan. When the slider itself becomes defective, it's days are usually numbered. However, if you can apply some Super Glue Gel under the side tabs on the hold down bar, it might hang in there for a much longer time. Make sure it doesn't get into the body of the zipper or the pull tab. If unsuccessful, it would be best to find somebody in the Fashion District to replace it for you. Replacing zippers and pulls on purses is an unpleasant job. There are replacement sliders made that pop open and snap closed. The existing puller would have to be cut off and the open slider positioned in its place, then snapped shut. Check with any local tailor shops.
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Commercial Singer Treadle (motorized) w/96-10 Head
Wizcrafts replied to suzelle's topic in Leather Sewing Machines
I recently got a replacement needle bar with a needle clamp with a thread guide on the bottom from Bob Kovar. He has parts for all manner of industrial sewing machines. Call him at 866-362-7397. -
I want to pass along a fix I learned years ago when the forward and reverse stitches don't match on a Juki 441 or clone. This is low-tech, but it works for me. First, unthread the needle and verify that forward and reverse are not in sync at various locked in stitch length settings (using the finger screw adjustable stop block on the stitch lever). If they are out of sync, unscrew the top screw on the stitch length nacelle, slide a 1/32 inch thickness washer with a 3/16 inch hole under the top of the nacelle, inline with the top hole and reinstall the top screw. Some machines will be corrected with this thickness, while others may need a thinner or thicker washer. While this isn't the official way to match the stitch lengths, it is simple, quick, affordable and just works.
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Why is my needle feed machine eating the work?
Wizcrafts replied to williaty's topic in Leather Sewing Machines
Back in November my partner in the shop made a holster and handed to me to sew. He failed to mark the STOP point and I hit a steel clip he embedded between the layers. The #25 disintegrated into dozens of pieces of shrapnel, most of which hit me in the chest and some in the face. My glasses protected my eyes. -
That's why I didn't see anything in the moderation history.
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I looked through the Moderation History for this topic and there is nothing about anybody's posts being deleted or hidden. Do you recall what the context was? Could it have been edited? I do see that you edited 2 of you own comments earlier in this thread. It is remotely possible that your "missing" comment was moved down by other comments that were in the que and is in fact still there.
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I was about to recommend a post machine. You can get them already equipped a a roller foot and sometimes, with a roller feeder. I used to have such a machine that I used to make Bikers' caps. The driven roller on the bottom and follow roller on top allowed really precise sewing.
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Needle System for Industrial Machine
Wizcrafts replied to olwaylon's topic in Leather Sewing Machines
Those machines use System 328 needles. The leather points are 328LR. Another compatible system is 214x1. These needles were made to fit the Singer 45k series machines (45x1). -
What is the difference between 3bl and 8bl?
Wizcrafts replied to pekingtailor's topic in Leather Sewing Machines
He means that due to the small pulley on the back, unless you have a speed reducer between the motor and machine, it will operate too fast for hard veg-tan leather. This could cause the needle to burn the leather and thread and will cause skipped stitches. However, if you only plan to sew soft chrome tan leather, like is used on seat covers and couches, it should be fine. This type of leather can be sewn faster than the vegetable tanned type which is usually tooled. -
I have a Cowboy CB4500 and have used it to sew a one inch thick holster. I had to remove the standard throat plate and feed dog and replace them with the low riding, narrow slotted throat plate. Then, I reduced the alternating feet lift ratio to the absolute minimum setting. This gained just enough extra clearance to move the leather for each stitch. With the standard setup, the machine maxed out at 7/8 inch. However, due to the feed dog being gone, reverse didn't match forward stitches. So, I learned to set the stitch lever to the zero position and double tap into the same holes to lock the knots inside the holes without moving the leather. I finished this process after removing the holster by pulling up on the top thread to get the double knots well into the hole. I also recall I used a Diamond point needle instead of the standard S point. If this isn't enough clearance, there is a Campbell High Lift available from Campbell-Randall Company, in Texas. It sews up to 1.25 inches of leather. If you contact your primary dealer for these machines he may be able to set it up in advance to sew one inch out of the box. This might be at the cost of the feet not reaching all the way down on thin leather. In that case you would lose the ability to sew thinner jobs without repositioning the presser bar. At the very least you would have to increase the alternating lift ratio to clear new layers at normal thicknesses.
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Further down, in the details, they reveal that the leather was sewn with #69 bonded nylon, probably with either a #16 or 18 needle. If you intend to limit your leather to 10 ounces, and the feed dog teeth get enough grip on the bottom to feed the leather, it should do until you can afford a proper industrial leather sewing machine. Hopefully, you won't burn out its tiny 1.2 amp motor before then. They smoke and smell bad when overloaded by sewing hard temper leather. I know this from my own experience with a very similar Sears Kenmore machine I bought a dozen years ago for peanuts. It blew up trying to sew a leather bikers' vest. The reality of the situation is that it is purely a domestic sewing machine for household sewing of garments and light weight home accessories. It was not built to stand up to the pounding it would get regularly sewing leather denser than 4 or 5 ounces. You need a real industrial sewing machine, preferably with a compound feed walking foot system to sew medium to hard leather on a regular basis. These machines have motors rated between 1/2 and 3/4 horsepower. The motor on the Kenmore is 1.2 amps at full speed and probably puts out 1/15th hp. If you need more information, read my sticky article about the type of machine you need to sew leather.
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Tips for evaluating a used Nakajima 280L
Wizcrafts replied to WILTIM's topic in Leather Sewing Machines
That machine would have to mechanically 100% to properly handle 20 ounces of leather. It was not built with this in mind. It was for leather and vinyl upholstery. I had a similar machine with the National nametag. It worked great sewing 12 to 16 ounces, but struggled with anything above that. I had to crank down both foot pressure screws almost all the way to keep the leather from lifting with the needle on the upstroke. It let me use #207 on top with #138 in the bobbin, but was happier with #138 top and bottom (above 8-9 ounce thickness), down to #69 for thin leather seams. I paid for it sewing rifle slings and guitar straps for a friend who had a business. -
How to setup SewQuiet 5000 Servo on a Consew 227R
Wizcrafts replied to TheFatBob's topic in Leather Sewing Machines
Try downloading it now. It is in pdf format. Most devices are able to open pdfs. SQ5000Instructions.pdf -
I don't see any evidence of moderation on any posts in this thread. Are you sure you pushed the Submit button?