mold help

[functionbikes]

HI everyone, I just got thru a job machining a mold for a customer and I got taken to the cleaners for the cost of the job, was underbid mostly from the start, what is the average feed for cast iron, I machined the geometry and it took me over 40 hours to get the one side near complete then there was the finish ops, I need some advice


Jeremy

[SORCHEROR]

your building a mold out of cast iron?ive never heard that before,let us know what material
if its not cast iron,also how big is the plates?

[functionbikes]

the plates are 15 long 8 wide and 8 tall, the material was supplied, was told it was cast iron, these are for an aluminum foundry

[the-niho]

aluminum foundrys usually need hard material to be used in mould (cavity) plates due to sudden high temperature differences.So it could have been hardened or prehardened steel.