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| Manxmodder:
--- Quote from: NormanV on May 09, 2015, 09:39:38 AM ---I tried to case harden some steel using sugar, I'd never heard of anyone else using it. Sugar is carbon rich so I thought that there might be a chance that it would work but it didn't for me. The reheating might be the answer, I will try it. --- End quote --- Norman,sugar does work quite well. No matter what the carbon rich source is the reheat/heat soak phase is important as it allows time for the carbonising layer to penetrate to a greater depth and build in thickness. For convenience I do use Kasenit compound fairly frequently,but other carbon sources like charcoal and soot will also work. I have also seen steel hardened with a sooty carburising flame from an oxy-acetylene torch......OZ. |
| vtsteam:
Cross slide casting. That was a tough one, too. Parting line was part way up the sides so false cope again, and that long thin extension way up in the cope. Messed up the draw twice and had to remake it. I should have made it a loose piece, but didn't. The crucible was absolutely brim full, but I managed without a spill. I thought it might pour short because I had a big riser to fill. Definitely thought I might be doing this one over.... but it poured perfect to the top with no leftover for ingots, and the casting came out fine. So no complaints here! On we go.... |
| Joe d:
Well. that one came out looking good. Like the one before it. And the one before that.... think you've got this casting stuff down, Steve :bow: :bow: Joe |
| vtsteam:
Thank you kindly Joe! :beer: I miled the top and the slides and rails on the bottom of the cross slide casting. And here's the ball handle I'll be using, which I cast earlier in brass. I didn't set a core in it, so the core print was cast, too, since the pattern had prints. I'll just saw it off and drill. Tomorrow I'll start on the bottom slide retainers, gib and gib screws. I have meetings from 12:30 on until 6:00 so not sure how much I'll be able to get done. |
| tom osselton:
Another good one! I haven't done any casting yet this year and still haven't tryed a false cope. I use a homemade 5 1/2 "square steel crucible 9" deep for aluminum so its a little harder not to have enough metal. I use the clay graphite so far for brass and will hopefully give cast iron a go. |
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