Loops on satin columns

[levelbest]

Folks:

We sewed out a lot of luggage the other day (20 bags) and then also sewed out a couple baby blankets tonite.

Common thing happeneing is loops on the satin columns. What should we check to avoid this. I am totally brain dead at this point.

Something on the machine need to be adjusted or is it something in the software.

I'm too tired to think and the boss (my better half) wants answers [img]smile.gif[/img]

[Rod or Sharon]

John,

The first thing I would have you check it the auto lower limit found in SETTINGS, THREADFEED. set this back to the default if it is too high.

Rod

[levelbest]

Hi Rod:

Thanks for the reply.

On the luggage, I did check that. We even turned off actifeed and tried going with manual. The majority of the design sews fine but we get occasional loops. I just checked and the actifeed lower setting for the baby blankets and it was at 0 (instead of one). Also of note, the sewout on 2 slices of backing before actually sewing on the blanket was just fine - no loops. Same went for the luggage design.

BTW, havn't tried our other machine yet to see if the same thing happens.

If it's not something in the software, could it be something like the belt tension that could cause this?

[Rod or Sharon]

John,

Well, maybe...but...is this an XT or standard Amaya? How old is this machine? Have you checked the X-axis cable tension? It should be in the 10 + or - pound range....

How about the condition of the rollers? If the thread is slipping or not feeding correctly this would cause problems. Have you tried the thread-feed 200 test? This measurement should be between 88 and 91mm for several lengths of thread run off. This test would give you an indication of threadfeed motor or cpu problems.

Have you checked the cam disk take-up lever throw? This measurement should be beween 48 to 51mm .....the diff between the upper and lower measurement of the take-up lever...If the cam disk is worn this will cause all kinds of grief....

There...just some quick thoughts that ran thru my little punkin head for you to chew on.....

Rod Springer
Amaya Tech and Trainer

[levelbest]

Rod:

Would it be ok if I called you to chat about this for a bit?

Whats confusing to me is we can sew normal flats, polos etc. with the same design and it doesn't happen.

[HERB]

Rod, Recalling the issue I had with looping. You found it was the hall connector on the motherboard. Only rose it's ugly head when doing caps.

[levelbest]

The hall connector?

[HERB]

One of the connectors on the mother board. I may be using an incorrect term. I could run flats fine, but when I tried caps the machine vibrations caused the connector to lose contact. This created a looping issue as the connector bounced on the board.

[Hugo Torbidoni]

John

You may want to try changing over to a Teflon needle. I think you may be having the same issues others have when embroidering on collars, straps and name tapes. Even with the pressor foot set all the way down there can still be some flagging going on. The Teflon coated (BP) needles help.

Hugo

[Hugo Torbidoni]

John,

Is the looping happening when the machine is moving in the Y-Axis or the X ?
If its the Y axis, with the power on , check to see if you notice any play if you push or pull on the beam. Your Y motor belt tension may have loosened. another possibility is the set screws on the Y motor pulley may be loose enough to cause the pulley to slip on the Y shaft. It was an occasional problem with the older machines.

Then again, the looping would show up in the test sew on regular backnig.

Your blankets aren't made out of the same material as the luggage,,,,,,,, are they?

Wishful thinking.

Heh Heh....... When all else fails see if theirs a Hamster in the power supply.

Seriuosly, it would be interesting to see how the other machine responds.


Hugo

[Rod or Sharon]

John,

Herb brings up a good point...in his case it was the x-axis hall connection that had a bad solder joint to the motherboard. This connecter is in the upper portion of the upper left quadrant of the main CPU. It also may be worthwhile to unplug/plug your connectors on the CPU on the chance of a possible slight corrosion issue going on with one of the pin connectors.

Atta boy Herbie...got your thinking cap on.....should I put that thinking cap picture I have of you on the web...eh, eh,eh?

Rod Springer

[levelbest]

I often just play the video of Herb hooping the cap hoping some of his thinking will rub off on me. Then I make my required sacrifice to the goddess amaya and go about my way.

Thanks guys - lots to check [img]smile.gif[/img] Much appreciated.

[integrity]

The two things I look at when I see looping is to check the hook timing, but more specifically the space between the hook and the scarf of the needle, that little indent or carve-out on the back side. If that gap is too large or wide, the hook fails to split between the needle and thread to interlock the upper and bobbin threads. I can't say why the hook should move front-to-back, let alone side-to-side, without loosening the screws, but I did find one screw (out of the three) missing the last time I checked. To correct this it is more challenging and I think that timing technique has been discussed thoroughly enough.

Now, the cheap fix. The bobbin tension may be off. And the usual culprit is the collected dust or wax or whatever (navel lint!) under the tension spring. Some say sliding a business card under the spring will help to remove the buildup. I will go so far as to remove the two screws holding the spring and thoroughly clean out the under side of the spring and the many holes of the case itself. Canned air may not be enough; an old toothbrush helps to poke in the little holes and remove any debris. Carefully replace the screws (if you didn't lose one) and set the tension again, the drop test as everyone knows.

So many questions, so little mind,
Dave

[integrity]

I just re-read the premise - the luggage - of the looping. Sometimes I go to a larger needle, less resistance for the thread to follow through, so that on the up stroke the correct loop of thread is formed behind the needle scarf for the hook to catch. If that upper thread is too taut, the hook misses "grabbing" or passing inside of the thread and especially on the luggage or backpacks I can say that I hear the missing stitch because of the way the upper thread "pops" on the luggage material when it comes back up through to the upper surface, missing the bobbin interlock below.
Do you use any stabilizer? I sometimes find a light tearaway helps, too. Pressure sensitive adhesive backed stabilizers almost always compound this problem for me because of the stickiness for the thread, and the larger needle helps to leave a bigger hole to pass the thread through.

Dave

[The Embroidery Authority - OLD]

Hugo was talking the other day about a hampster in the power supply.... Ha ha
I just had a customer tell me yesterday they had discovered a small mouse was living inside the body of one of their Amayas. So this is definitely possible. Just be sure to clean out all the cheeze in and around your machines.
Another customer of mine had communication problems because a mouse had chewed on one of their network cables. Boy, Mickey gets around.
Ed