Im not very good with jigsaws ( I havent got one anyway). Is there a technique or special saw for sawing a bend? The item in question is a 28mm kitchen worktop. I thought of drilling holes round the bend and joining them together with a fine keyhole saw.
it all depends on the radius of the curve and the quality of finish required really......without the use of a jigsaw or router, your own suggestion is pretty much your only choice.....series of holes along the line of the curve then a saw to join the holes, you can then refine the finish with a file ( on a down stroke only )
and sand paper
Drilling holes is an option if you don't have the correct tools. You need to be careful to drill from the correct side and be careful not to damage the surface.
If you are not sure of what you are doing it might be cheaper to get a man in.
An alternative would be to use a saw to make a series of straight cuts, then smooth off the corners that are left. At least you'd be working on flat cuts. You'd be left with a horrible raggedy edge to smooth down if you use the drill and jigsaw method. Also, if you're not very good with jigsaws, it's quite easy to make a jigsaw cut where the blade wanders off from the vertical, which would add to the smoothing off problem.
Whichever method you choose johnny, finish off with a 3" belt sander. A rough belt to start with, then a finer one. You then get a near perfect finish, ready to glue a laminate strip on to finish (assuming it's a laminate w/top.
Is it the hole for the sink johnny ? If so make sure you mark out the recess accurately and use a hole- cutter for the corners then you could " join-up" the holes using handsaw , circular or reciprocating saw - making sure the worktop is supported properly since this hole will significantly weaken the stiffness of the piece .