waterhead37 I looked at 3mm hardboard panels first because they were already white (one side only). However, the insides of the pattern were so ragged and generally looked tatty, so I went with the unpainted 3mm MDF version because the cutouts were so much crisper. Painting the panels was a pain - I found the most efficient way was to put it on with a roller and use a brush to deal with the surplus on the reverse at the same time. A couple of passes in two different directions did the job.
DaveL The Kreg Mini is very easy to use and I was surprised just how strong the dry joints were. Final assembly involved a thin coat of glue on the mating surfaces, so I'm certain that it will be a long-lasting and effective joint. I bought the jig from the Brimarc stand at Kempton Park. It cost me £18.75, including a square driver and a box of coarse screws.
I had earlier posted a question why Axminster were charging nearly double for their Kreg Mini, but no-one replied (aside from being told that there was a review of jigs in a magazine) and I still don't know why there is such a discrepancy. Having said that, I'm delighted with the tool and although I don't expect to use it much, when I do I'll be confident that it will do a good job.
Ray.