Hi, Burr and Michael.

Both ways work well and I've got the fillets I wanted, so thanks to you both for your help.

Michael.

I'm pleased you found the problem and managed to fix it.

One further thing I have just noticed though.

If you select the outer boundary curve of the solid shape, the dimension is shown as 221 x 90mm which is correct. If you now extrude that shape down to say -15mm in thickness you should see that the sizes of the solid are now 220.996 x 89.993 x 15. Interestingly, when I check the size of the original solid it comes out at 221 x 89.997 x 15. Is that normal, or could it be causing a problem further down the line?

Thanks for all the help.

Martin.