- Joined
- Dec 6, 2021
- Messages
- 224
I've been temped to try this (soooo convenient...) but always chicken out. You've inspired me!I used mig with er70s, not ideal at all but it was a test.
I've been temped to try this (soooo convenient...) but always chicken out. You've inspired me!I used mig with er70s, not ideal at all but it was a test.
But what difference in mechanical properties would you expect to see given that it is present as a fine powder? (I haven't noticed any graininess when using JP) It is there as a filler. It would be easier to make a fine powder from cast iron than steel but from a marketing perspective, epoxy steel has a nicer ring to it than epoxy iron.but generally steel has higher strength properties, or more flexible props.. since we don't know what kind of steel.
The resin is slightly magnetic. The hardener isn't. There isn't enough iron present to provide a conductive path. I expect that the white color is the calcium carbonate filler listed in the MSDS.The resin is slightly magnetic. Wouldn't the JB weld be electrically conductive or magnetic? I haven't found it to be either.
If this is a part under some stress, you'll probably see it fail. The carbon in the steel diffuses into the iron to give you an extremely brittle interface. CI CAN be welded with steel rods - I've done it like this before, too, but it's not optimal. By heating the piece like you did, the carbon may have diffused enough to really minimize the brittle region. Usually, CI is welded with a nickel based, zero carbon rod, so there is no carbon present to create the brittle area.I used mig with er70s, not ideal at all but it was a test.
Cast iron already contains 2 -5% carbon. It is the rapid cooling that makes it brittle. Essentially, it creates white cast iron in the heat affected zone. Heating and slowly cooling will anneal the heat affected zone, forming grey iron.If this is a part under some stress, you'll probably see it fail. The carbon in the steel diffuses into the iron to give you an extremely brittle interface. CI CAN be welded with steel rods - I've done it like this before, too, but it's not optimal. By heating the piece like you did, the carbon may have diffused enough to really minimize the brittle region. Usually, CI is welded with a nickel based, zero carbon rod, so there is no carbon present to create the brittle area.
What does this part do on the shaper?
I’m finishing up scraping a 15x18” surface plate to scrape every part flat, it’s gonna look and work a lot better soon.Looks great Braeden