Sewing Through Leather And Plywood

[bikerdaz]

A good friend of mine is THE mg classic car upholstery specialist here in the uk. W m collingburn and his son James make these door cards almost on a daily basis. I can tell you that the machines they use are singer 132k6's. Mike has been using these machines for around 40 years to do this exact task.

As for the 111,I'd give it a go but as someone has already pointed out,I'd wear eye safety gear...

[houndsnmules]

even though you increased the mechanical advantage at the input, I would imagine it would exceed the original design specs on the internal parts. Its like putting a 3 foot pipe on a 3/8ths ratchet

[TinkerTailor]

even though you increased the mechanical advantage at the input, I would imagine it would exceed the original design specs on the internal parts. Its like putting a 3 foot pipe on a 3/8ths ratchet

I once broke the moving jaw on a 5" record vise right off with a 6' pipe "extension".......That was a hellovah bang.....cast iron don't let go slow.....

[Darren Brosowski]

A Chinese 29k hand wheel - if it has the pulley groove - will fit and save the drama of reinventing the wheel. If no pulley groove then it can be machined.

I am adapting the singer 111w155 at the moment to hopefully give it more punching power. I have replaced the clutch motor with a 1Hp servo motor and replaced the motor with a smaller 40mm diameter one. At the moment i am in the process of casting a blank to make a new larger hand wheel 7" diameter and a 6" pulley. This should give the hand-wheel increased momentum and a lower gear ratio, thus more punching power. Has any body else had any experience increasing the size of the hand-wheel/pulley on a singer? I intend to use a number 23 needle (135x 16 TRI DPx16D) with a 20tkt bonded nylon thread to sew through the plywood and leather; do you think this type of needle point is the ideal choice or would a different shape tip be better?

Any thoughts?

[Trox]

Singer 144W-305 was a machine made for these jobs, sewing leather on to door panels. This one would do it without problems (now sold) Like stated in prior post, as long it's soft plywood and the right needle type.

Tor