Donald, is the 1,000w bulb a conventional long-tube type, similar to a work lamp bulb? Did you design a parabolic refelctor, or were you able to adapt a readily available refelector to suit your needs? How did you deal with the heat output from this light source? Seems like you could fry an egg on the housing after a while with 1,000 watts flowing through the lamp.

How does the "point light" source differ from a conventional condenser enlarger? I have no background in physics, so a layman's explanation would be helpful.

Finally, could you take an image and enlarge it using the various methods at your disposal by way of an example? I still use an old D5-XL with a color head, but would be interested in anything which makes for a sharper print. Thanks, tim