- Aug 27, 2010
- Reaction score
I have plans for a glow engine that uses cast iron for the piston. Where can I buy cast iron (I need about 8" of 3/4" Round) Or is there a substitute I could use?
These are gonna be hit or miss. I snagged 3 the other day at the scrap yard. They are cast iron but 1/8" in they seem like they are hardened. My little 4x6 bandsaw stopped cutting. I'm gonna toss 'em in the fireplace and try and anealing them otherwise they're gonna be useless.rickharris said:Small lumps - try to find some old sash windows the weights were cast iron - A plastic installer window may be able to help.
For bigger lumps Tractor weights.
I hadnt thought of this, once a crank has wrecked a journal its useless and also worthless, taking them away from the engine machining place would be welcome from their point of view.itowbig said:car engine. a crank shaft from same
Might be different there, but I've used dozens of the things and all but one have been excellent iron, the one 'bad' one was still good iron, but badly chilled and hard to work.shred said:Sash weights and barbell weights are about the lowest possible quality CI, but frequently good pieces can be had from them.
EEeeewwwww! Artie, that's WAYYYYY too much information. And a blighter your age. Ever thought of therapy? :big: :big: :big:Artie said:Im off to grab a crank sometime today to play with. :big:
I would think hard aluminium alloy is probably better.That's what all the manufacturers of model 2-stroke engines use,and they last an amazingly long time,even when abused by dimwits not putting enough oil in their fuel.Unfortunately,those sort of grades of alloy are not normally available in small quantities,which is possibly one of the main reasons for specifying cast iron.Although for our sort of use,you can probably get away with 6061,which is quite easily sourced.my 0.02.Is cast Iron really necessary - unless the engine is going to see a lot of service perhaps not?".
Ooooooohhhm Jim....I ALWAYS wash my hands.......bearcar1 said:EEeeewwwww! Artie, that's WAYYYYY too much information. And a blighter your age. Ever thought of therapy? :big: :big: :big:
BTW, don't forget to wash your hands afterward.