@Torx If you’re looking for a jig, the older Trend DJ300 is OK. IMHO better than the later CDJ model. It often comes up on eBay for around £50/£70 and you could sell it for similar if you don’t get on with it. I have one and a Leigh (which I like) and the last lots of dovetails I produced were hand cut. There’s a place for them all.
I had a quick look but the ones I found seemed only to have the template for box joints, unless I’m missing something.