Spiral Milling Attachment in place on the vertical table with the job being machined by the self-contained High-speed Vertical Head.
Although rare,, if you do  locate one you will find it a most beautifully constructed and ingenious tool capable of producing many types of spiral fluted work - milling cutters, boring tools, countersinks, straight and taper reamers, special drills etc. For work in a remote area, without access to a supply of new tooling, the spiral milling attachment would prove ideal for the manufacture of cutters for other machine tools. For spiral milling the workpiece has to be both continuously rotated and moved axially beneath the cutter, the two moments being co-ordinated in the correct mathematical sense for the job in hand. When generating spiral-fluted work that is also tapered, it must also be possible to set the work at half the included angle - rather as in generating a screw thread. If the "hand" of the workpiece flutes is the same as that of the table, both rotate in the same direction; however, if the "hand" is opposite, the direction of rotation must be "opposed" as well. Finally, it should also be possible to set the cutting tool in the direction of the flutes.  The unit fits onto the vertical table and is driven from the main table feed screw by a train of three fully-enclosed gears that connect to a power shaft passing through the base of the unit. The gears are arranged in "pick-off" form and can set so as to provide any spiral lead between 4 mm and 6400 mm, or their English equivalents.

Able to be  moved about three axes the Swivelling Angular Table was wonderfully versatile and adaptable accessory. It permitted many awkward jobs to be accomplished without removing and remounting the workpiece between machining operations. Inclined surfaces could be generated by the use of standard cylindrical cutters, rather than the much more expensive tapered kind, and it was often possible to bring the job being worked on into the most suitable and convenient machining position without the use of packing pieces or jacks.
Amongst the interesting range of adjustments was one where the table was mounted so that rotating it 180 degrees about the vertical axis brought both ends of the workpiece to the cutting tool.

Designed to be a more rigid structure than the swivelling table the Fixed Angular Table was used for jobs where normal mounting procedures could be used. Because the table was removable re-locating it exactly horizontal again was taken care of by guide blocks that engaged with the T-slots in the vertical support table to which it is bolted.

The Swivelling Angular Table being used for a typical job where the quickness of setting would save an enormous amount of time and trouble.
On the job being machined slots through the bosses on the right hand end of the casting have already been machined and, without any resetting of the job being necessary (just the table tilted), the ones on the left can be dealt with as well.

A typical job for the Deckel FP1

Micrometer-adjustable boring head in use

Left and below - various accessories for punch milling - numbered 1 to 9