Interestingly, in the steam-powered days of mechanicals and paste-ups - in this case circa 1980 - I had occasion to bring an additional paste-up for an annual report that was already in prepress. As I waited at the counter for service I could see through the open door into prepress where one of the technicians was pulling off my rubylith image window overlays and tossing them into the waste bin. So, when the prepress manager came to the counter I asked what was the deal with the guy pulling off the overlays - that I had worked hours on - and trashing them. He told me that they do a much more accurate job by shooting and masking film than using the original art that I had supplied. I asked why I had never been told not to bother doing rubylith overlays. He said that they didn't because prepress enjoyed getting a chuckle out of seeing the art that designers (and mechanical men) supplied.
They didn't charge then, just as they don't charge now - but, unlike now, at least they had a good laugh.
One of the experiences that helped direct what turned out to be my career.
If you don't understand the terms I used in my post...damn your youth! :-D
best, gordo
Sorry Gordo,
My youth says,
1. I have no clue what a paste-up is
2. I have no clue what a mechanical is
3. I have no clue what a rubylith is
4. I have no clue what shooting and masking film is
5. I have no clue what a blueline is
I have no clue what that stuff is, why?
My first prepress job was in 1999 at a very progressive shop that had done away with as much manual processes as possible and switched to digital. It is funny now that I look in our shop and see so much left over items from the "steam-powered days". I don't know what half of it is. We also have some machines that scare the hell out of me, if you get too close you're likely to loose a limb, these machines are also prone to exploding (not a good day).
So anyways, my entire career has been with shops that had converted to complete digital workflows right before I arrived, so i've never had the pleasure of dealing with those things.
So now you ask, "what the hell does this guy know then?" I know all about computerized/digital prepress, that is what i was trained on, that is what i have worked on, that is where i make my living.
Oh, and to the OP, We build in time to our estimates. However, if we think that fixing the files will take more time, we call the customer and let them choose to fix on their end or pay us to fix on our end. Most choose to pay us. For really good customers, we just do it no charge.