It would be helpful if you guys provided a bit more info like: will the line laser always be stationary or will it have to be moved in order to get the line where its supposed to be? It's my understanding that the laser in its normal printing position is at 90 degress to the platform surface. Is there a mecanism for consistency getting the line laser to make a 45 degree angle as you describe. I think these questions need to be answered before any real solutions can be sought from the community.