A one-off machine, built over two years by Gerlof Sloterdijk, a skilled turner who lives in Leeuwarden, in the Netherlands, the "Geslo" lathe is unusual in being constructed entirely by the owner - it incorporates no propriety parts or ready-made items. Even very complex items including the 3 and 4-jaw chucks, dividing head, quick-set tool holder and gears were constructed by the builder. The lathe has a centre height of 100 mm, admits 400 mm between centres and allows 50 mm to pass above the cross slide. The simple, flat-topped bed has V-edged sides and the carriage (with a full nut connecting it to the leadscrew) is powered along at a single fixed rate of 0.1 mm for every revolution of the headstock spindle by a compounded set of nylon gears driven from the headstock. A dog clutch is incorporated into the leadscrew - a timeless use of this simple but ingenious device - and, although the changewheels cannot be altered to provide a screwcutting feed, there seems no reason why this not be arranged in the future. A graduated handwheel is fixed to the leadscrew at the tailstock end of the bed to provide a hand-driven fine feed.
Unusual in being formed as a permanently-mounted miniature boring table, the cross slide has very closely spaced T-slots; these not only allow accessories to be quickly and easily mounted, but also provide for ease of adjustment afterwards. The cross slide has a travel of 130 mm and the 360 degree swivelling top slide 90 mm.
A built up unit, the headstock hold a 16 mm bore, 2 Morse-taper spindle (with what must be a 26 mm x 2 mm thread) running in a taper roller bearing at the front and a ball race at the rear Six speeds of 167, 243, 335, 446, 586 and 765 rpm are provided from a 0.7 kW motor which drives directly to an overhung V pulley. This type of arrangement is now widely used, and completely eliminates the enormous difficulties of manufacturing a headstock with the drive pulley mounted between the bearings - although it does pose some problems in engineering a suitable strong backgear assembly (which this lathe lacks)..
Bolted to the back of the lathe bed is a vertical milling column that carries a six-speed (126, 388, 572 and 800 rpm) head driven by V belt from an off-set 180 Watt, 1360 rpm motor. There is no quick quill feed for drilling, instead the whole head - which can be angled at 30 degrees each side of vertical - is moved up and down the column by a fine-feed screw..

Very unusual in being formed as a permanently-mounted miniature boring table, the cross slide has very closely spaced T-slots; these not only allow accessories to be quickly and easily mounted, but also provide for ease of adjustment afterwards. The cross slide has a travel of 130 mm and the 360 degree swivelling top slide 90 mm.

The headstock is a built up unit and the 16 mm bore, 2 Morse-taper spindle (with a M16 x 2 threaded nose) runs on a taper roller bearing at the front and a ball race at the rear; six speeds of 167, 243, 335, 446, 586 and 765 rpm are provided from a 0.7 kW motor which drives directly to an overhung V pulley.

A compounded set of nylon gears driven from the headstock provide a fine powered feed to the carriage.

Bolted to the back of the lathe bed is a vertical milling column that carries a six-speed (126, 388, 572 and 800 rpm) head driven by V belt from an off-set 180 Watt, 1360 rpm motor. There is no quick quill feed for drilling, instead the whole head - which can be angled at 30 degrees each side of vertical - is moved up and down the column by a fine-feed screw.

Quality workmanship--the lathe is unusual in being entirely constructed by the owner, and incorporates no propriety parts or ready-made items - even the 3 and 4-jaw chucks, dividing head, quick-set tool holder and gears were constructed by the builder.