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Lead used for thousands of years . It could like Asbestos back 1960's silicon was same list as Asbestos. Silicon oxide about as dangerous as Asbestos Today i here nothing of Silicon oxide aka sand dust. If read technical manual it will be there. I do know lead is if used wrong it very...

They used charcoal around 1600’s because it cost to must to ship coal from England. I read a few magazines did talk about charcoal for cast iron. The best is coke if available In California is harder and shipping Dave

I ran across using charcoal for melting cast iron . Not Kingsford It charcoal used in restaurants sometimes call Lump charcoal. I have use for BBQ and is is very hot charcoal comes 50 pound bags Dave

When order from large founders they all need. But do not think any order castings. It some most do think about is class of cast iron. There is lower quality you see coming from overseas poor machining and may find pits and sand pockets In America here basic ones The lowest cost is class 25...

Nice photos Look like the way I annel steel. Dave

Welcome to the group Dave

Welcome to the group Dave

Looks great Dave

The found was just buy set. The next part is the chart. It look at B&S diving head there chart for every hole devision to 250 Dave

Welcome to the group Dave

Welcome to the group Dave

Welcome to the group Dave

I start with South Bend 9 , drill press and a bench grinder. I did have a milling attachment for lathe. I did alot that group including engine parts. Today you find a milling attachment on Amazon and Walmart for under $100.00 today. Dave

Welcome to the group Dave

I had production found most time natural bonded sand just add water. Work great. Also tried 4,000 pounds Petorbond sand. It great sand good too use psin oil and alcohol for the catalyst. But just to costly. The natural bonded sand just add water was best price. Easy to mix and no smoke...

I like screw driver slot for adjusting and swith The programing is so must fun with hours spent pull hair . Dave

Welcome to the group Dave

Welcome to the group Dave

Welcome to the group Dave

Welcome to the group Dave