
Originally Posted by
abaddonxi
Depends on how many layers of canvas you want to sew and how heavy the canvas is. I'm guessing you're not in Sydney, 'cos I've got a room full of industrial machines.
IIRC you need a ball point needle for canvas - it goes in between threads rather than poking through threads of the canvas.
An old straight stitch industrial shouldn't cost you more than $50-150, that'll get you a ancient Singer that does forward and reverse and probably a knee-lift foot, which makes life easier if you're doing a lot of sewing.
Problem with those little Singers is that they will do the job in most cases, although sometimes you're going to have to wind the needle through by hand cranking - again, becomes a bother if you're doing metres of hand cranking. Also, sitting on the floor crouched over the job for hours is not comfortable.
A lot of sewing big canvas - under sail size - is about having the space to lay the job up before you sew, knowing exactly how the seams are going to go, and folding the job up in such a way that it'll feed easily through the machine. You need a fair bit of space front and back of the machine to feed the job across.
Other good thing about industrials is that the bobbins are bigger - take more thread - so if you are using heavy thread you don't have to change the bobbin every couple of minutes.
If you are going really heavy - 4+ layers of over 16oz canvas - you might want to find a walking foot machine. This clamps the job and drags it forward between stitches.
Or you can find your local sailmaker/shoe repair guy and get them to quote on it for you.
Cheers
Simon.
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