Contact boards can have any number of pins. The quantity of pins, their size and shape and placement all varies to match your exact samples.
Ternes Burton makes several style of compressible pin boards. Boards made with no perimeter holes (4CB style) are generally used for making single burns. The board has two or more compressible pins mounted permanently into the board surface and a plate is first attached to these pins, then a film is attached on top of the plate to the same pins, the board is then placed into a vacuum frame where the image from the film is then burned into the plate. Newspapers commonly have four inline pins and use either two single plates (a left and a right page) or a double truck plate. Tail pins can be mounted into the board if required. Boards are .160" thick and can be made any width and length required. A stepboard, also called a step and repeat board, is a board made from layers of mylar, vinyl, and aluminum, and has perimeter holes around all four sides. These boards are meant for making multiple images on a printing plate- accurately and affordably. Work can be stepped horizontally, vertically, or both. Steps can be made in fractions as small as 1/64" but are more commonly made in steps of 1/2", 1/4" 1/8", and 16ths. Boards are accurate to +/- .003". Ternes Burton makes several styles of boards with several variations. We have so much information we wish to explain that we have created a separate catalog for just the boards and related items. To download this specific catalog please click on Catalog 2 on our Home page. Because this item is so detailed we suggest that you phone us with your specific questions.
The step and repeat board has perimeter holes into which spacers are inserted, then your plate is attached to the compressible pins, and your stripped flat is attached to the movable spacers.