I watched a video recently on making shells and most of the work was carried out on the bandsaw with a lot of internal shaping using a Dremel type tool and sander. A bandsaw could have been used with the right blade to do the few cuts he made using a scroll saw.
I too was in your position back in November when I didn't have the funds to buy a high end machine, and I won't take chances buying used machines when I don't know what I'm looking for or know enough
about them. Which as a beginner I didn't. A forum member recommended the Sealey SM1302 having used one for a couple of years himself, and as he's been scrolling for longer than I've been on the planet,
he's recommendation was good enough for me. Granted I've recently sold it after less than three months as I'm being treated for my birthday, otherwise I'd still have it and enjoy using it. I was beginning
to reach the saws limits for internal cuts as the saws maximum cutting depth is 50mm, so a combination of wood thickness and width determined whether or not I could thread the blade from below.
You'll notice on saws like the Excalibur the top arm lifts up and the Hegner has a blade slot in the table, which I assume is for internal cuts on larger pieces.
Depending up on how much you plan to use the saw I wouldn't right off the capabilities of budget saws, everything below I made using the Sealey and I've been really chuffed with the results.
If you decide to have a look for a used Delta, there's one in Nottingham for £75.00 on Gumtree.
http://www.gumtree.com/p/power-saws/del ... 1099602406