So I've just upgraded to a 60watt tube. However, I have noticed that it's a lot trickier to focus because the beam is much larger (like 25%) from the tube. Maybe my mirrors and stuff are undersized but now it's taking up close to 50% of the mirror area and the end result at the cone on the head is a larger dot then before. It seems to be focusing to about the same size as before but it is a little larger. However the beam width at the end of the cone is really close to the size of the hole.
Is it possible to reduce that or do I need to deal with the tight focus needed and/or upgrade to a larger set of mirrors and head? Does the distance of the head to the 1st mirror matter? I'd assume not because... it's a laser so it should be expanding much over that short a distance. However, I figured I'd check and see if anyone had any suggestions.