I know a few print publishers that use these machines - you can tell it's been done by a machine - the corners aren't marked, the lines are too bold and there is a blob caused by the overlap at the start/stop point. Plus they are just pushing out too many to be arsed to take the time to do them by hand.
Maybe these machines could only ever do straight lines - or maybe they were/are dedicated line-drawing machines and the mat stylus is different because it is an adaption of a mountcutter and/or is not limited just to straight lines? Not sure about that though, because I know I read an article/saw and ad, about a machine that could do 'calligraphy' absolutely yonks ago.
Anyway - I understand the advantages - any shape you like in any colour - even signatures.
But the disadvantages are, or could be, limitation of colour and, especially, tone, and then there is lighfast-ness.
Do you think the day will come when a CMC can take a nib with a reservoir of some sort, containing ink or watercolour, or acrylic .... that you have mixed yourself?
Better still, do you think the day will come when a subtle washline - say one inch wide, can be made with a CMC attachment? One that looks as good as one really well done by hand - IOW not clinical.
Can a machine capture that obvious class and does anyone give one anyway
