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katit

Seiko STW-8B - question on servo with needle positioner

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9 hours ago, Gregg From Keystone Sewing said:

 SP-1100NPFL and all the Efka motors comes to mind, and many some others as well.

SP-1100NPFL motor has to be the best value out there right now. With a 50mm pulley I think it's the perfect motor for any walking foot machine, especially for the price.

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15 hours ago, R8R said:

SP-1100NPFL motor has to be the best value out there right now. With a 50mm pulley I think it's the perfect motor for any walking foot machine, especially for the price.

Agree, there is a lot to like about that motor.  

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Looks like I will be getting this motor, but first things first - need to take care of table (get it restored).

I asked buddy for some hardwood remnants but he actually had some maple butcher block and I got a nice 50x25 piece of a 1.5 inch thick block!

Now I have question about hardware. Bottom part is easy, just some nuts. Are those correct?? 3/8: https://www.amazon.com/LQ-Industrial-Furniture-Connector-Assortment/dp/B076WKTGMV/ref=sr_1_2_sspa?ie=UTF8&qid=1545091511&sr=8-2-spons&keywords=wood+nuts+3%2F8+25mm&psc=1

Next - top hardware. Table I got had those round hinges, which seems like "old style" hinges. On my other machine I got new "Euro" hinges. Are those interchangeable? When I put Seiko into my new table it was sitting little high it seems? Ideally I'd like to get kit like attached adn have it all nice and new.

 

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This becomes a "restoration" thread. I am not sure if I should start separate thread for this. I got piece of butcher block from my friend, he had 16ft board just laying in garage :) Got edges routes, glued pieces of wood. Today spent some time with router, all ready but will do cutout for belt and finishing after all pieces together and I can see it working. Routing wasn't bad, got it all done in less than hour. First I used forstner bits on corners and then just used clamped board as a guide. Tomorrow taking legs/parts for sand-blasting and going to order servo motor. I'm thinking this is going to be MY table and I will sell another machine. Not sure which one, but either this Seiko or my PFAFF 1245 will go.

 

 

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Almost placed order with Keystone for this servo motor sp-1100-NPFL but stopped due to $40 shipping :(

Makes it $300 motor, little bit too much.

Edited by katit

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Nice workmanship and very inspiring! I've often thought about making my own table so it is helpful to get an idea of what goes into it - thank you for taking the time to post this video!

 

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13 hours ago, katit said:

Almost placed order with Keystone for this servo motor sp-1100-NPFL but stopped due to $40 shipping :(

Makes it $300 motor, little bit too much.

Down the road you won't care about the extra shipping. Its a great motor and  it's priced well for what it does.

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It's been 2 month but finally I'm done. Table completed. Leg's sandblasted, primed and painted black. New hardware. Top finished with stain/poly. New thread stand. Home-made aluminum pan. No through holes. I love end result. Time to sew something :)

New sp-1100-NPFL motor. Last thing left is to figure out how to mount needle positioner. Any suggestions?

Motor controller supports 24V for knee lift. Correct part was little too much for what I wanted to spend, so I figured how much power I need (about 150nm pull), will see if I can come up with some cheap solenoid.

 

 

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All I can say is wow! Thanks Gregg for great motor and assistance!

I got controller set to lowest startup speed. I got positioner setup.

Now it’s just too easy. Can go as slow as I want and with gentle tap it makes one perfect stitch. 6 layers of auto leather - no problem, plenty of torque. Finished - just heel back and needle goes up. Wonder why do I need handwheel now :)

And because I don’t have to mess with handwheel - my locking stitches now perfect.

Now I need to figure out how to make stitch longer/shorter when needed

 

 

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katit,

I saw the feed dog on your machine in one of the above pics.  I would replace that.  Yours is worn out as well as the hole being large and jagged.  A new one will improve the feed of the material.  Just my two cents.

glenn

 

Edited by shoepatcher

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4 minutes ago, shoepatcher said:

katit,

I saw the feed dog on your machine in one of the above pics.  I would replace that.  Yours is worn out as well as the hole being large and jagged.  A new one will improve the feed of the material.  Just my two cents.

glenn

 

Oh yes, that machine got it's own separate topic:

https://leatherworker.net/forum/topic/84357-seiko-stw-8b-aka-consew-226r-refurbishadjust/?page=2

Everything sorted out and works great!

I just posted in this topic because this is where I asked about positioner. I put PFAFF with new motor on my newly restored table..

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