Warco ER25 Lathe Collet Chuck

March 19, 2017 0

When you buy the collet chuck you have to buy a backplate for your particular lathe. In this case for a Warco WM240B. The backplate is made from cast iron and was pre-machined to fit [more…]

Machining Cast Iron

March 18, 2017 0

There are a number of different grades of cast iron and within these there are a number of different qualities depending a lot on the casting method. Sand castings that are found a lot in [more…]

Cast Iron

March 18, 2017 0

Cast iron tends to be brittle, except for malleable cast irons. With its low melting point, good fluidity, castability, excellent machinability and wear resistance, cast irons have become an engineering material with a wide range [more…]

Crankshaft

February 25, 2017 0

A crankshaft machined from a solid piece of mild steel. This is quite a daunting thing to machine for the new model engineer and so I have described the steps I’ve taken in making this [more…]

Silver Steel Cutting Speeds

February 5, 2017 0

The recommended cutting speed for silver steel is 15 to 25m/min Using this speed I’ve created the following table of cutting speeds: Diameter of material [mm] Spindle speed [rpm] Roughing Spindle speed [rpm] Finishing 3 [more…]