2, Draw a square, (centrally on top face), 50mm x 50mm then extrude cut 10mm, floor tile with square hole in the centre.3, Draw a square, (centrally on top face), 75mm x 75mm, add a 5mm radius to each corner, select all and offset bi directionally 4mm, change centre lines to construction lines, then extrude cut 8mm, floor tile with square hole in the centre and a groove on the top face. This should give you a groove 8mm wide by 8mm deep with round corners, (looking at the top face).
Now my question, the resulting groove, (looking from the right, left,top, bottom planes), is square, But I want a shape that has a rounded bottom, (not a women, well not right at this min, well ok, if I must!, lol).
A U groove is what I want, but bugger me, I can not find a way to do it!
I know I'm being thick and there is a simple answer, but hey, it is xmas, Hic! Hic! Stagger! Stagger!
Happy new year to all you SW etcha-sketch peeps out there :-)