Posted by draftsman on 10/15/10 - 6:33 AM
#29
The first drawing that I have that officially has the registration mark was done in 1978, the 18" size. Can't say for sure anything before that, but I suspect it started in that time frame of 77-78....
And don't make too much about the soap issue, all I said was to be careful with it, too much is not good and it can make an easy job impossible. Nuff said.