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Forum > Sergers, Coverstitch and Blindhemmers > disengaging knife on sergers ( Moderated by CarolynGM, Deepika)

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disengaging knife on sergers
634D and Necchi 6002
avatrx

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Date: 3/24/14 9:55 AM

On a traditional 4-3-2 thread serger, can you serge without having the knives engaged? I'm guessing this only works for sergers with the coverstitch option but I don't know since I can't find that info anywhere in the user manual. I have a Janome 634D and also a Necchi 6002.

AnneM
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Date: 3/24/14 10:03 AM

Oh, yes, you can disengage the knife on the Janome 634D.

Remove the little scrap catcher so it is out of the way. Open the door where you thread, on the bottom front right. Then on the left of the machine, swing open the door that covers the left side of the machine. There are two knobs underneath that door. The one closest to the front is to change from a regular serge stitch to the rolled stitch. The other is to disengage the knife. You have to push the knife knob in towards the blade (it can have some resistance to it), and then turn it clockwise to swing it down and out of the way.

------
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avatrx

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In reply to AnneM <<


Date: 3/24/14 11:06 AM

I guess I knew you could disengage the knife, but what type of stitching can you do with the knife disengaged?

there are upper and lower knives?

I hope to use my serger more this year, but have only ever used it with the standard 4 stitch. I think I may have tried a rolled hem a long time ago, but aside from that - I haven't experimented much.

I thought I might like a serger with a cover stitch, but since my budget doesn't currently provide for that - someone suggested I just used a standard machine with a double needle to accomplish the same thing?
-- Edited on 3/24/14 11:09 AM --

Harriet P.
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Date: 3/24/14 11:20 AM

Hi, I have the Janome 634D serger also. You can create a decorative stitch using the 2 or 3 thread flat lock stitch. You would fold the fabric over and stitch at the edge without the upper blade. Then, when you are finished, you just pull the fabric taught and the stitch creates a ladder stitch on one side and a regular looking serger stitch on the other side. You don't want the blade to cut anything off. Harriet

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In reply to Harriet P. <<


Date: 3/25/14 8:14 AM

Thanks for the info. I guess I need to experiment

SheBear0320
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Date: 3/25/14 10:41 AM

I also like to disengage the knife when I am serging on elastic to avoid nicking the elastic.

Basically when you disengage the knife your machine will still make the stitches but you won't cut anything off.

I thought this feature was available on all sergers -- it's been on each of the 3 I've had.

------
Sheila
"sewing very slowly to fill an empty closet"

2014 Stash Busting Sew-Along:
66.0 yards sewn (as of 09/27/14)
133.875 yards purchased (as of 09/27/14)

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In reply to SheBear0320 <<


Date: 3/26/14 3:58 AM

I've always been aware that you can 'swing' the knife out of the way, but I didn't know if you could actually sew something with it out of the way. What is the correct procedure? Do you just make sure that you line up your fabric with the edge, but not over the edge?

SheBear0320
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In reply to avatrx <<
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Date: 3/26/14 10:18 AM

Each machine will be a little different -- I would suggest disengaging the knife and then doing some tests. You want the stitches to sit nicely on the edge of your fabric without curling your fabric.

I've also found there are some fabrics where disengaging the knife before roll-hemming works best -- like the string sequin mesh I just used on a skating dress skirt.

------
Sheila
"sewing very slowly to fill an empty closet"

2014 Stash Busting Sew-Along:
66.0 yards sewn (as of 09/27/14)
133.875 yards purchased (as of 09/27/14)

ryan's mom
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Date: 4/1/14 8:36 AM

Wrong post. Oops.
-- Edited on 4/1/14 8:37 AM --

------
Big 4 Pattern size 12, RTW bottom: 6, RTW jacket 8, RTW top (no size fits me well!)
Measurements: 34 HB/36 FB (34C bra)/27.5/36 (and working hard to keep it that way.)
Machines: Sewing: Elna 760, vintage Kenmore Model 33 (1967), Janome Gem Gold 3. Sergers: Babylock Imagine and Babylock Enlighten. Embroidery Only: Janome 300E. Coverstitch: Janome CP1000. Straight Stitch: Janome 1600P.

If you think your sewing is better than everyone else's around here, get out of my way b****. I hate sewing snobs.

My blog: www.phatchickdesigns.blogspot.com

JuneHawk
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Date: 4/29/14 12:39 PM

I have a Singer Quantumlock something or other serger and I can disengage the knife. In fact, I always have it disengaged and only engage it on occasion.

------
http://www.theserialhobbyistgirl.com/

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