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Make a muffler stuff it with a brass chore girl, rather like a heavy duty glass pack. Build one with a reservoir and add a drain plug to the bottom.

I melt anything I can find excepting cans. I've thrown 6061T6 tooling plate scraps, extruded door, window frames, busted auto transmissions and auto rims in the mix. Always degas with pool shock and I have had nothing but good luck. Jack

Look up Tom Meek in Defiance he is't far from you. A skilled self taught model maker and tell him machinejack sent you.

You need the powder form. Ace Hardware sells it HTH brand. Most big box stores carry it under different names.

I only know that before I started using it I had porosity in my castings. I read somewhere about using pool shock to get the hydrogen gas out. I use a forked rod and roll a little bit of the shock in aluminum foil and as soon as I take the melt out of the furnace I plung the rod to the bottom...

For non porous castings in aluminum I have always used pool shock for a flux/degasser . A reil type propane burner in a 12" piece of pipe lined with 1" of kaowool. In a home made sch 80 pipe crucible. Been doing this for a few years. I started out using a green sand made with bentonite clay but...

Been down the same rabbit hole myself. You could change my name to Rndmann9. I only use my greensand for big project. Got 40 Lbs of Petrobond and love it. You really need a muller if you want to keep using it, as the sand next to the casting gets baked. Go look at Mr. Pete 222 on You Tube. Lyle...

Not really answering the main question. When I am bidding and making questimations on cost the more 0.0000 on the right side of the decimal the more it cost, but that is for making money. Now as to the hobby side. I will make close to the final dimension but if I miss by a bit I adapt the...

Like you I had many failures using home made sand. Finally started using a green sand that I made from bentonite clay in the form of "pond seal" from a farm supply and 30 mesh sand. I mixed the clay and sand, and water and let it stand in a sealed bucket to let the clay absorb the water. Can't...

You are correct American puts there bases in the oven to normalize them. Back in the day when I was building special machines we used them quite often. There grinder was big enough to set a full size pickup on and grind it down to nothing.

I myself am old school more like a dinosaur. I will use a good tool steel cutter over carbide any day. Less power is required, better finish, and yes it's slower. I read a book on the aspects of cutting tools. There was a photo of a tool cutting steel the cutting edge actually is not in contact...

Perfection was always on my mind when I started making parts for the space station. I didn't make all that many but I did learn a thing or too. You wouldn't believe how many grades of aluminum they use. The first parts I made I polished and took all the tool marks out. The parts came back as...

Starnovice: I have the plans if you still need them machinejack AKA Jack

I found that our local farmers coop carries a product called pond sealer, it's suppose to be bentonite haven't tried it yet, but it's worth a try. For $11.00 a #50 bag cheap enough. Jack

When I was starting out I got machinist job working with several older Polish and German gentleman. Old school to say the least. Lard oil and kerosene was the standard at this shop. I still use it to this day. Though my lard oil is more refined than then. I didn't know there was an artist grade...