Opportunity is missed by most people because it is dressed in overalls and looks like work. - Thomas Edison
This is awesome!!!Aluminum is a really beautiful metal to work with. That thing is really really sweet. Congrats. Keep this going.I would consider using thinner lines for the reg marks. We use .5 pt on ours and it seems to work well. I think Alan uses a series of dashes rather than a solid mark. And I have also heard of some using a negative, but I have not tested those. 0.5pt gets us close enough I think. Try each and let me know what works best haha.
The only major problem I had was that the epson 7900 we had would print the reg marks off between colors occasionally but I could never figure out how to avoid that. There was a thread on that somewhere here also. You have a nice setup going.