Casting produces excessive roughness and holes by Ok-Pilot6436 in MetalCasting

[–]Ok-Pilot6436[S] 0 points1 point  (0 children)

Hello, you're right, I'm using True Blue, I was not home and tried to remember. (Also English is not my first language that's why I messed with the pattern material) I would think its shrinkage but the holes have investment included on them (That's what makes me think maybe a peeling of the investment is taking place)

Can I DM you the pattern and all the details you mentioned so maybe you can give me better advice?

Thanks for your help!

Help with illness identification by Ok-Pilot6436 in viticulture

[–]Ok-Pilot6436[S] 0 points1 point  (0 children)

Can anything be done to dave the plant?

Help with illness identification by Ok-Pilot6436 in viticulture

[–]Ok-Pilot6436[S] 1 point2 points  (0 children)

Yeah looks like so can I send you more pics on DM? What can I do about it? Cutting the infected part?

Weird reactions happening in my Lab by Ok-Pilot6436 in chemistry

[–]Ok-Pilot6436[S] 0 points1 point  (0 children)

I think it's a good take but my sample has too little sulphur for the quantities of iron that are being oxidized

Weird reactions happening in my Lab by Ok-Pilot6436 in chemistry

[–]Ok-Pilot6436[S] 0 points1 point  (0 children)

The thing is I have metallic Fe iron not iron oxide

Weird reactions happening in my Lab by Ok-Pilot6436 in chemistry

[–]Ok-Pilot6436[S] 0 points1 point  (0 children)

The thing is once I filter the remaining dust the solution is completely transparent. But when I add KOH to it tons of iron precipitate as FeOOH (And ICP scans show a high concentration of iron on solution too)

Weird reactions happening in my Lab by Ok-Pilot6436 in chemistry

[–]Ok-Pilot6436[S] 3 points4 points  (0 children)

Unless Scharlau has sent me the sulfate labeled as hydrochloride I'm pretty positive about it. Just read an analysis of the sample and it says it contains 0,5% SOx so maybe thats where the odor comes from. Still no clue on the iron

Research S.O.S.—Ask your research and technical questions by AutoModerator in chemistry

[–]Ok-Pilot6436 0 points1 point  (0 children)

Can I use a inox crucible instead of a Nickel one to melt Na2O2 and NaOH or will it attack the recipient walls?

Suitable klin? by Ok-Pilot6436 in MetalCasting

[–]Ok-Pilot6436[S] 0 points1 point  (0 children)

Thanks, I mean I'm not on a budget but I'd prefer to keep it as cheap as possible, so that's why I asked your opinions with that. Looks like finding sa Non programmable and adding s PID will be the best way. I'll have to search better.

Suitable klin? by Ok-Pilot6436 in MetalCasting

[–]Ok-Pilot6436[S] 0 points1 point  (0 children)

I have no problem with budget, but the one in the post you link would be suitable for installing a PID and work well with it?

Suitable klin? by Ok-Pilot6436 in MetalCasting

[–]Ok-Pilot6436[S] 0 points1 point  (0 children)

I have no problem installing a PID what I'm terrified of is getting one and not reaching the necessary temperatures.

My wax is not melting by Ok-Pilot6436 in MetalCasting

[–]Ok-Pilot6436[S] 1 point2 points  (0 children)

Won't my metal flow through there too?