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29EssexRat

Sewing Through Plywood

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3 hours ago, RockyAussie said:

I have to ask why then you do not just take it to an upholstery place and pay them a few bucks to stitch it up for you. Way way cheaper and probably a better outcome.

Plywood is not that hard to stitch through as some might think but a decent sized machine would be best.

No upholstery places around me, otherwise i most certainly would. Still looking around, but probably going to end up hand sewing it.

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48 minutes ago, Wizcrafts said:

Soft wood yields the best results when a nail or needle punctures all the way through.

I tried to figure out the category of the Finnish Plywood, that I used. It is made of Baltic Birch in all layers, and it is considered a Hardwood. Source of information:

https://www.andersonplywood.com/hardwood-plywood/

https://www.wood-database.com/baltic-birch/

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Is that the standard motor on the 201? I guess the 4to 1 increases the torque significantly with your setup

Must say a very neat installation, it looks like you also use the original hole fittings on the machine

Nice to see innovation is still alive

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21 minutes ago, chrisash said:

Is that the standard motor on the 201?

No. It is a stronger motor, but not the strongest motor you can get as replacement for this kind of vintage machines. Please be aware, that nominal input electrical power and input nominal current to the motor is one part of the issue. What matters is output mechanical shaft power and output torque of the motor. The effectiveness of these kind of motors vary a lot. My original Singer 201k motor was quite weak and my replacement motor got about the double max shaft torque and double the speed.

The sewing machine was build for quite high human power using threadle and hand crank and a bigger fly wheel to make the torque even higher at the hard spots.

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Yes when I started it was my only machine and would sew maybe 2mm veg tan  using 69 bonded thread, at most using a upgraded 90 watt motor I think the original was 60 watt, since then brought a 29k and only use that with the 201 in the back somewhere, do you have any plans for the reducer as there is a guy in India who posts about using a 201 that might find it of use

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Hi Chrisash. I think this thread is about sewing plywood, and we should not make it a vintage sewing machine motor thread or speed reducer thread. I will send you a pm. If some other people are interested in information about that, then please make a new thread about that, and I shall make my comments.

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I once saw a demonstration of this machine sewing through Plywood: Dürkopp Adler 969. Really impressive! 

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yep  That machine will do it as will a Puritan chain stitch.

glenn

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Just for the record, some people show some creativity and use the possibilitiy of sewing plywood for their designs:

https://materialdistrict.com/article/sewing-wood/ 

https://icd.uni-stuttgart.de/?p=16063

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