Please State the Definition...

[Lisa@BYH]

1) Auto Feed Lower Limit: Is this stating how low the needle will go into the bobbin case? For instance a 0 or 1 is very deep into the case to pick up the thread, when a higher number it will only dip in slightly?
ALSO
2) Auto Feed Upper Limit: Is this the height the needle will go back up into the machine? 40 being higher up for thicker fabric and 10 just up a little for thin fabric with no pile?

Glossary, parts & maintenance, etc. CD only seem to explain the setting number differences, not really saying what this setting actually is.
HELP FROM THE PROS PLEASE!

[Greenwing]

This has nothing to do with Needle Depth.

thread feed limits refers to the amount of thread that the rollers allows for each stitch
while the machine is set to auto actifeed.

lower thread feed set to 5 will allow no less then 5 to be expelled for every stitch an upper thread limit of 5 would allow no more then 5 to be expelled.

Amaya's do not use friction tensioning they expel the amount of thread for every stitch and adjust the amount on the fly for every stitch while on auto actifeed.

[Lisa@BYH]

Thank You. Okay, not the adjustments I was hoping for. Are these definitions written down somewhere for us users to find?

[gcannon]

Amaya OS>help>actifeed settings- for a start.

[Rod or Sharon]

Acti-feed settings, regardless of whether it is Sandard or Auto Acti-feed relate to material thickness.

The rule of thumb is that an Acti-feed setting of 1 is equivalent to 1 sheet of typing paper in thickness, 2 is two sheets, 3 is three sheets and so on.

The thicker the material, the more thread that is needed to keep the thread laying on top of the garment, rather than trying to pull it through the material.

Rod Springer
Amaya Tech & Trainer

[Greenwing]

Lisa What are you trying to do??

The needle depth on any machine is a set depth durring the timing process. their ar no machines that allow on the fly depth change.

It must be set exactly to allow the hook to pick up the thread and loop the bobbin.

if you think your stitches are being pulled too tight then increase the lower therad feed # or increase the material thickness # and see if that helps.

[Lisa@BYH]

I'm sewing on very thin fabric. Did you mean AutoFeed Lower Limit in Settings? Just put that up to 7 (from 1) and it improved a lot!!
But if the Lower Thread Feed is an different setting from that, I'll try that too. Same?
THANKS!

[FME540]

Lisa,

Auto Feed Upper Limit: When using auto feed the material thickness setting will not exceed this value.

Auto Feed Lower Limit: When using auto feed the material thickness setting will not go below this value.

These settings were added to AOS to add some control to the auto feed functionality. Depending on sewing speed, material type, thread, stitch length, etc.. the material thickness set by auto feed would vary wildly. By imposing upper and lower limits to the process you still get the benefits of auto feed but limit it to more acceptable levels.

Be careful with the lower limit setting. A setting of 7 for lower limit would be in the correct range for a leather or lined jacket. For most applications a setting of 1-3 will give better results. I believe the default upper limit is 40. I would recommend changing that to something around 12-15 for everything but the thickest garments.

The material thickness setting is critical for proper operation of the thread feed system on an Amaya machine. Set properly it allows the machine to sew faster and more accurately than any other machine. Incorrect thread feed and material thickness settings will cause the machine to have excessive thread breaks and accuracy problems. When using the manual material thickness setting a good general rule is to set it a bit lower than recommended setting for the material. Then move it up a bit if necessary. Use the auto feed feature to sew caps, it works great because of the varying thickness of the material.

Using manual the manual material thickness setting and adjusting it carefully I have sewed out numerous 75,000 stitch designs created with the Photofill feature from DS. Many of these designs were sewn at 1400 spm and above with no thread breaks. Spend some time to learn how to use the material thickness setting and your results will improve.

Hopefully some of this helps.

- fme540