Hey everyone! Thank you for letting me into these forums! I'm a noob to the game here as I just got a kit from my wife for my birthday in December. Any tips or suggestions are very welcome. I'm currently trying to decide whether or not to use satanite or Mizzou to coat the lining of the furnace.
Welcome to the forum. Satanite is what you want to use. Mizzou is a castable refractory and not suited for painting on. https://hightemptools.com/products/satanite-5
Thank you! I saw some folks were using either to line theirs with and I wasn’t sure which to go with. Haven’t had a chance to watch the video yet but do you know about how much I would need? I was assuming that the link to hightemptools.com is for 5 lbs.
5 lbs will coat one of those small store bought furnaces but 10 lbs will leave you some for touchups and whatnots around the foundry. I buy 20 lb lots, it doesn't go bad in storage.
That's what I always thought too and had heard from a few sources so maybe it's true for most people. But I ran into one guy (just one mind you, this is totally anecdotal but still maybe worth throwing out there) who had his package of leftover Satanite go bad in storage. Decided to patch up my little furnace for the first time in several years to see if mine was still any good after hearing that. Mine had sat about twice as long as the other guy let his sit, and not in the world's driest shed. It still worked perfectly fine, but just in case its shelf life really is limited, as soon as I confirmed it was still good I passed the rest along with some firebricks on to a friend who was able to use it all up right away building a firebox for his steam engine boiler. It's much easier for me to get more Satanite now than it was to get my original 20# box anyway, because a Canadian supplier has finally appeared since then. Jeff
I hope he didn't throw it out. If it just hardened up from moisture absorption it can be reconstituted. I have a dedicated mixing bowl and leave the residue in it and it hardens up. Just add water and it's good to go again.
I remember you saying that before and I even started my patch job by re-wetting a "ingot"(?) of unused Satanite that had hardened in a mixing container after I put in the original lining several years prior to try it for myself, and indeed it did seem to break up and dissolve into the same stuff as freshly mixed new satanite. This guy said his was still dry but it wouldn't mix right. When he tried to use it again after a couple of years, it "stayed 'chunky' for a really long time", then flaked off immediately when he tried firing it. Who knows, maybe he's the exception that proves the rule. He bought more to reline and had no issues with it. Similarly, this wouldn't be an issue with new satanite for @Darrow of Lykos' lining anyhow. And even if 5# gets used and the remaining 15# goes bad in a few years without getting used, that's still a hell of a lot cheaper miscalculation than letting 3 furnaces worth of extra Mizzou go bad! I remember wishing hightemptools sold a 10# box when I ordered my 20 though. Jeff
have to wonder if it was a settling issue? did components settle out separating, so he got all the "glue" in one use and all the refractory in the other or some such? would a good dry mixing before each use have fixed his issue? we will never know V/r HT1 P.S. any chance freezing would have been an issue? Ive never heard of Satanite going bad
Thank you for the welcome. Once I get accustomed to all this I wanted to cast some of my 3D prints. Stuff for my kids and for family and friends. I will eventually cast a ring for my wife. Once I'm comfortable with doing all this stuff.
Sounds good. I have done many things with 3D printed PLA patterns and sandcasting, a pretty quick way to get from point A to B. I have not done any lost PLA or other type of casting that has an investment and a burn-out.
