Two holes are cut in the table top, at the right places to make a window for the light and a slit for the printing frame.
Will could be seen watching a printing frame which he had set in the sun.
Fasten in the printing frame, and print in a diffused light—that is, not in the direct rays of the sun.
The negative is placed in a printing frame over the sensitized zinc and a print is made.
Some workers have thought that the light action goes on, "continues" in the print after it is removed from the printing frame.
For all sizes above cabinet, the printing frame as given in the figure is the best.
Exposure is accomplished in a few minutes, the paper being placed under the drawing in the printing frame.
Make a print from this waxed positive, supporting the paper while in the printing frame by a sheet of plain glass.
This consists of a box, large enough to receive a printing frame at the bottom.
This plate of heavy glass containing the several negatives is placed with the sensitized metal in a printing frame.