Circular needles and double-pt needles--interchangeable?

Hi

I have a pattern for a simple hat which calls for double-pointed needles. Would it be OK for me to start this on a circular needle of the same size, and then to shift everything to the double-pointed needles after a couple of inches of knitting? I think I’d be more comfortable about not dropping stitches if I could start on the circular needle.

Also, how do you join stiches on a circular needle? I knit a hat and when I finished casting on I just continued by knitting in the same direction. However, I got a gap at the bottom edge, which I’ll close up by sewing. Is this the norm?

Thanks

As long as your stitches fit on the circ, you can use that for as long as you can and then switch. One way to avoid a gap is to overlap the first and last stitch of your cast on, basically take the last and first stitches off their respective points and switch them. I generally just use the tail from my cast on to close any noticeable gap–simpler.

Wow, Ingrid–you’re amazingly fast and clear in your responses. Thanks for the help.