Turning castings
FORM TOOLS

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At present I can supply form tools in HSS, Molybdenum tool steel for cast iron or mild steel, or in Cobalt tool steel for stainless steel for Gauge 0 Scale 7, Gauge 0 Fine, Gauge One Scale 32, Gauge One Fine, Gauge One Standard and for Gauge 3 Standard, 3 1/2″ and for 7 1/4″ gauge.

PRICES FOR HSS TOOLS:
Tools for Gauge 0, Gauge One 1 and for Gauge 3 are 3/8 x 3/8 x 4″. £62.00 each plus delivery.
Tools for 3 1/2″ gauge are 1/2 x 1/2 x 4″. £68.00 each plus delivery.
Tools for 5″ gauge are 1/2 x 3/4 x 4″. £79.00 each plus delivery.
Tools for 7 1/4″ gauge are 1/2 x 1 x 4″. £85.00 each plus delivery.

PRICES FOR COBALT STEEL TOOLS: as for HSS, plus £10.00 each.


The G 1 Fine tool is wide enough be used on G 1 Standard width tyres where a 1.5 mm deep flange is preferred.
The tools have the same profile all down the end of the tool and can be sharpened by grinding a small amount off the top face. Mine usually profile about 80 to 100 wheels between sharpenings.

These tools are recommended for lathes capable of low speeds, at least as slow as 100 rpm. I usually use 72 rpm for cast iron and 54 rpm for leaded mild steel. Find the right speed for yourself by trial and error - too fast and the tool will not make an even cut.
To prevent any vibration in work, make a small central 'pip' in the outer end of your mandrel to take a small amount of pressure from a live steady held in the tail stock.

Current stock of single ended form tools:
4 mm/ft, for EM gauge, use a Scale 7 formtool.
Scale 7, HSS. 3, Cobalt 2.
Gauge '0' Fine, HSS. 4, Cobalt 2.
Scale 32, HSS. 3, Cobalt 1.
Gauge One Fine, HSS, 3.
Gauge One Standard, (suits 16 mm Narrow Gauge Standard), HSS. 1, Cobalt 2.
Gauge 3 Standard, HSS 2.
3½″ gauge x 1.8 mm, HSS. 2. (Scale 16 dimenions).
3½″ gauge x 2.9 mm, HSS. 1, Cobalt 1. (SFMES dimensions).
5″ gauge x 3.2 mm, HSS, 1. (SFMES dimensions).
7¼″ gauge, HSS, 0.

Links to drawings: Gauge 0,  Gauge 1,  Gauge 3,  3½″ Gauge,  5″ Gauge,  7¼″ Gauge



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27 Mar 2013