I have the same problem. My machine had a #12 set of eccentrics (you need 2 by the way, one for the front feed dog and one for the rear feed dog. This machine (A-3DW) is capable of differential feed where the front and rear feed dogs can use different cams to create a "gathering" feed. The eccentric cams are directly overlapping in the machine. I found that using a strong magnet helps to get them out. Newer cams have a hole to insert a wire to pull them out with.
I bought a set of #28's from eBay seller laimagesupply, but they are made in Taiwan and do not appear to be working properly. The machine still stitches at 12 stitches per inch (or so close that you can't tell the difference). I don't know if I just got a mis-marked set, or what. Trying to work it out.
I got #28's because that's what the Merrow MG-3U comes with standard and its for doing emblem edges.
Did someone tell you to get #50's or #100's?
Also I have seen other forum entries that suggest 300/4 Trilobal Poly Floss (like in eBay auction 200775692605) for the edge, or fuzzy nylon, or 4 to 5 strands of 40wt embroidery thread.
Post an update if you have any luck.
Did he mention why you would have to change out a working looper? The parts manual lists only 1 upper looper #81, and 1 lower looper #84 that are used on the A-3DW. Other loopers seem to be designated for different machines.
I have seen others recommend a 32-36 eccentric. I'll contact the guy.
Any idea on total cost?
Just sent a couple emails back and forth to your guy.
His cams are also imported, so I'm going to wait & see how things work out for you.
My machine has the A70-14 needle plate which is for a 1/8" border which is what I want.
The A70-15 is for a 3/16" border ($35 is a good price)
My parts manual shows a 77 upper looper, but does not show a 94 lower looper.
My installed upper looks to be the standard #81 & I can't tell what the lower is without taking the machine apart which I'm reluctant to do if I don't have to. I would guess it to also be the standard #84.
If your machine stitches well now, I would first try just the new cams and see what you get before taking everything else apart. I have read that the loopers need to be bent and adjusted when installed & its kind of a pain.
Let me know how things go!
So have you gotten your machine working the way you want yet?
I'd like to hear how your cams worked out. Did you have to go ahead and change the loopers to the ones you ordered or did the loopers in the machine work OK?
the cams were tight so i used an emery wheel and lowered the thickness a couple thousands, placed in machine it runs fine, but the cam is only a 30 so it sewed 30 stitches per inch, not what i was looking for so this machine and the other are going up for sale on ebay shortly, I have purchased a MU-3 new from merrow and I im learning how to use it, I was hoping I could just use embroidery thread but it wont cover as well, need a top thread that will, any input on where and what to buy, we use floriani thread to do our designs,
Sorry to hear that the A-3DW didn't work out, I was hoping I would be able to get mine to do the emblem edge as well. 30 Stitches/inch seems in the ballpark. I have seen people recommend 32-38, but have gathered that its mostly a factor of the top thread to get good coverage. The cheapest I have heard of is to buy 300/4 denier trilobal embroidery floss.
This ebay listing is an example
Did you just change the cams out, or did you go ahead and put in the loopers and other stuff you bought too? Still trying to hope that I can use my A-3DW, but it may be a lost cause.
Don't want to spend $100 on something that won't work & I can't afford a new MU-3, so if I can't get my machine to work, I just stay with my current embroidery machine edges.