LunarConcepts

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About LunarConcepts

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  1. Docado, Thank you! I was gonna just stay away from the problem today and avoid the headache. Your post prompted me to sit back down and look at it again. I went ahead and swapped up two sizes on the needle. I noticed that my bobbin was getting low and just figured I'd take care of that while be blood pressure was still down I started out on a 12" double layer of bias tape and noticed that the top tension was real high. Figured it was the larger hole the needed was making and made the appropriate adjustments. I went back and forth on that 12" pcs probably 30 times randomly throwing in back stitches. It was running like a champ! For education purposes, I threw the 19 needle back in place of the 21 (T90 thread) and it also sewed perfectly. I then threw the original bobbin in and it all went south! Turns out, I have better then a handful of bobbins that are "sticky" in the case and I just happen to have 3 of them in a row. Its a vertical axis machine and certain bobbins I have are getting pinch between the backlash spring and the bobbin hold down arm. some move freely up and down against the backlash spring tension but still drag on the hold down arm right where it folds over and contact the corner of the bobbin hole. You really notice how inconstant and jerky the bottom tension is, with the bad bobbins, when you pull on the bobbin thread when it isn't laced through the bottom tension spring. I have always sewn heavy webbing on this machine. I image that I never experience the problem prior barbecue I was always sewing with such high top stitch tension that it just overcame any lower tension inconsistencies. Thanks again for suggesting a helpful course of action.
  2. Ill certainly give them a call. The service was 5 months ago. This wasn't a situation were I got home and a day later and the machine just started acting up. It wasn't used much as its not my primary machine I use for business now.
  3. They are not in till Monday and this forum is filled with a very knowledgeable, and in the past, helpful crowd.
  4. Thanks for your reply. The machine went into service because it was in desperate need of a tune beyond set the timing and go. The machine would nest thread no matter what. The machine came back after service at Keystone and ran great. I'm looking for the tip as to why it sews great in forward and only messes up in reverse. It runs smooth when not actually threaded. There is something with either the thread deleivery or take up that is only happening when the R-lever is pressed. I have run the gammit of upper and lower tension to see if more or less would make a difference with no real favorable result. It does seem slightly better with more tensions or keeping the speed up. The proble is I am sewing inside of a 9x3x3" bag and you just cant go that fast. Thanks again!
  5. Hello, The above mentioned machine was recently serviced. Since its been home, I have used it about 2 hours running heavy nylon belts with great results. It was then set up with a binding attachment and has seen minimal time just sewing some binding across maybe 50 2" pcs of webbing. The issue I am having is that it will sew forward with no issue but unpredictably it will not sew in reverse without trying to wrap the top thread up into the hook area or pluck strands off the braid causing them to pile up in the needle hole. The big change would be that I started binding a layer of Cordura and Diamond Ripstop edges together so my tension is down about 3 turns from where I was. I even went back to my previous settings and would say its only slightly better with thicker materials and more tension. I am using the same needle and thread though all this. When sewing and reversing with speed it seems to do better than when I'm just walking through starting a seam and want to back-stitch 3 or so stitches. Sometimes its great and others it nests up so quick you cant react. You can sew through four layers of binding tape up and back 5" and not have an issue. The first back stitch on your project and BAM! When sewing through material it is audibly louder with a clank, clank, clank in reverse. Without thread and material the machines sounds the same in both directions. Hook timing looks solid. reverse is just something I never had to play with so I don't know what to go after. Could the reverse "stop" have something to do with it? The machine came to me where the stop set that the stitch onnly revers at about a 3 length where I stitch more in the 5 range so I did lower the stop to better match the forward stitch length. Thanks for your suggestions.
  6. Thanks for commenting! I have this almost entirely eliminated primarily through increasing the bobbin tension to what I would feel would be way to much but if it works.... Basically I got pissed off at the Juki and went back to my old Brother. I managed a relaxing 2 hours of making belts and when my head was in a good place I sat back down with the Juki and backed everything out and started working my way in. I would roll over to the Brother and give the top thread a pull and then back to the Juki to adjust the tension till my calibrated elbow felt they were the same for both machines. I did the same for the the bottom stitch and realized how much less the Juki was even after yo-yoing the bobbin case to get it into the normal tension range. I went for broke on the bottom tension and dialed it tighter with positive results and without an impact on the top stitch. I am going to give a thread luber a shot. This webbing sews up rock hard and the smoke rolls off the titanium coated needles. I would love to eek out a bit more top stitch tension which I am hoping will snug up the last little bit of slack on my corners Thanks again!
  7. Thank you all, I will try turning the material prior to going past needle bottom. I always went past bottom on the Brother to make sure I didn't deflect the needle away from the hook and miss catching the corner stitch. This seems to be more of an issue when I am only sewing through a single layer. It is very frustrating as its usually right a the end of the project. It certainly kills the feeling of a successful finish. I have tried not raising or barely raising the presser to make sure it wasn't releasing the thread tension at all but really there is no load on the thread so I am not sure how it would? Gregg, Loving the new machine. All is well, I just need to get this last little thing figured out. The repair on the Brother has made it better than ever. Thanks for any additional input!
  8. Hello, I recently purchase a Juki DNU1541S and I am having an issue with my bottom stitch making a loop whenever I make a turn (generally a 90*). I am sewing a heavy nylon webbing. I have been through increasing and decreasing both top and bottom stitch tension to the extreme. I have to run a decent amount of top stitch tension as this stiff is rigid and has a very tight weave. When I have the top stitch tension tight, it pulls the bottom stitch loop up through the material excessively to the point that my 90* corners are not crisp but rounded off. I can work with the top and bottom stitch tensions till it no longer pulls the bottom stitch through the material but then the loops start forming on the bottom side. This is normally only an issue for the first stitch after turning the material. All this is better shown in the picture. This is an issue I don't have on a Brother LS2- B837 and I am not sure if it has something to do with horizontal vs. vertical axis machine. Its almost like I am getting an excessive amount of slack when knee lifting the presser foot when turning. I did try actually just spinning the material under the foot without lifting and it made no notice improvement and in one instance made it worse I appreciate any suggestions. Thanks for a great forum.
  9. Thanks Gregg, I really appreciate the follow up. I wasn't really looking for instructions on timing a machine. I would never want to tell someone how to time a VW turbo diesel over the phone. I was really just looking for info on diagnosing symptoms of a bad hook assembly before a dropped the cash on one just hoping it might fix my problem. It really seemed to be the last thing left. I think, with the help of everyone above, that I may have things worked out. If not I will contact you and set up a time I can drop off the head. I am on the far side of Lancaster County so its about a 3hr round trip. Again, thanks. I appreciate it. -Chris
  10. Thanks Gregg, I have called Keystone multiple time. I have asked to speak with a tech and each time I am told I will be called back to no avail. I wanted to purchase some parts and possible a hook assembly and didn't want to waste money if the tech thought it wasn't the issue. This morning I called in and I was actually able to talk with someone but only regarding purchasing a machine (Juki). I had questions on cost if I didnt need a motor or if I picked the machine up myself etc. I have to admit, as hard as its been to get a hold of a tech, I'm a little shy to purchase in case I need help or run into an issue down the road.
  11. THANK YOU ALL! Sorry I haven't replied. I set my account to get notifications of replies but never saw any emails so I figured no one responded. Last night was the straw that broke me. Today I woke up and started looking at a new machine just out of frustration. I had a belt sew with no problems. I shut down for the night, woke up the next day and went to sew my next belt and couldn't make it 10" without an issue. Of course then you dive in for a solution and prob make it worse till better. Wizcraft, thanks for the info on the needles. I plan on experimenting with a couple options. I have actually seen a puff of smoke roll off my projects and the needle can get pretty warm. I would like to give the titanium needles a shot. gottaknow, I actually did move my entire hook assembly as far left as I could till the needle was just being pinched between the strike plate and the hook guard. This was probably the best thing I did as it seemed to help. Last night I flipped the machine up and was sewing thru a scrap belt just using the hand-wheel. I was actually looking at exactly what I believe you're describing. I was thinking to myself that the hook point looked like it could be closer to the needle but wasn't sure how to do it. Why, because being a noob I wasn't considering that I could actually set the hook point to basically strike the needle then BEND the hook guard to the correct position (so it stopped pinching the needle to the strike plate) to just deflect the needle out of the way. I forgot what a machine tech told me " yeah, we modify stock parts all the time" I thought if I tweaked a part out of as delivered spec it would ruin it. I truly think that its the hook splitting the thread. You can actually hear the machine sound rough when it does it, Its actually a rubbing noise. I WILL be trying this tonight...fingers crossed. I have a barn find NATIONAL 26-188 which is a Singer knock off. It is a horizontal axis machine and it sews thru these belts with no problem and gives me proper tensions on the thick, stiff webbing all at twice the speed as the brother. The only thing is that it feels like an old tractor to sew with. Not refined at all. I know the Bother is capable just need to find the set up. Is a horizontal machine a better option for me? I was strongly considering pulling the trigger on a JUKI DNU1541S this morning. Any opinion on that? I know guys use them for exactly what I do and then can still work with 1000D and lighter Cordura as well. Tulsaman, I really want to love the machine, It was complete for 550.00 and came out of someone home. Very little wear on the finish. I have it set up with a Reliable Sewquiet6000 and it punches thru anything I throw at it. I only use bonded nylon. Normally A&E T90. The thread tension is set pretty darn tight. It has to be or it will not even attempt to sink the top thread when pulling back thru the belt webbing (on the bottom side). I actually wonder if the tight tension is an issue as well as it really puts a tight twist on some of the thread possibly ruining its chances of making a nice loop for the hook to grab? I have tried needle sizes 19 up to 23 with no real improvements in stitch tension. The machine seems smoothest when using the 20. I will definitely check out the Grotz Ti coated needled as I have been and play with the scarf orientation. Thanks so much!
  12. Hello, I am new poster but have been here often for answers. I have the above listed machine and I am at my wits end with a constant fraying thread issue I have. I sew heavy nylon webbing. The issue I have is that when sewing it seems as though my hook is splitting my thread which in return causes it to fray above the needle eye or needle thread guide. It doesn't rip the entire thread just a strand. Its erratic and is happening at any thread tension. I sew with a tight tension as some of this nylon is like sewing through plastic. This adds extra twist to the thread so when it pops it really curls back on itself. I have tried advancing and retarding my hook timing, replacing many if the items in the thread path I though we're casing the fraying and i have stoned any area that i thought might have a burr on it on the hook and bobbin assembly. I have tried size 19 thru 23 needles (sewing with T90-92 bonded nylon) and now I am curious if it something wrong with the hook assembly? I do know know the systems of a bad hook assembly or the normal problems that it causes? I have had a tech look at the machine (house call) but with little luck. He thought maybe it was ever tension on the thread but it happens at most any tension and there are times where it sews yards of belt at a higher rate of speed, perfectly...then I might be lucky if it doesn't happen every 3 to 6" of stitch. slow speeds do not help. I can actually hear the "snag" happen and usually it will be a pair of snags and that's it for the clean stitch (you get to know when something hiccups just by the machines feel) I did try searching through the forum for any suggestion. If you can offer suggestion on diagnosing the hook assembly or offer suggestion that would make it easier to swallow the cost of a new one, I'd appreciate it. I have orders piling up and I'm at the point of just throwing it off a bridge. Thanks, Chris