Cast Iron has a separate phase of flakes of graphite (carbon) These flakes are similar in strength to pencil "leads" So oxide films although...
It seems to poke a stick at bifilm theory... But, I have some concerns about this study. Campbells book is 700 + pages and it can be...
This is the idea behind tilt pouring, try to do just what you suggest, it can be made to work, but all the other considerations of air aspiration...
Shipping seems high I ordered off the AFS webstore, had to call in because there was a shopping cart glitch but they took care of it The...
[ATTACH] Mini Casting Handbook Dr. John Campbell Second Edition 2018 OK, it took a while but I have a copy It is $US 30.00 from the American...
This is a great thread, you guys are doing Masters if not Phd level research here If you wonder why there are some contradictions / confusion in...
People in this thread are ahead of 99% of commercial foundries - awesome Bob and Dr Campbell are considered to be heretics in our industry - like...
Were there ever operational foundries on board ships?
QUOTE="PatJ, post: 12932, member: 17"]It seems that John Campbell originated many/most/all? of the bifilm theories, and Bob was one of his...
OK so this is the bleeding edge of foundry research, maybe around 20 years old versus the 4,000 year old lore we are used to And it is only of...
OK hope everyone realizes what a big deal Bob doing these videos is, a singular honor for the hobby For a Canuck its like Gretzky came over to...
Here is a link to a South Africa foundry publication featuring a lost wax bronze foundry [ATTACH]...
Nice piece of work there, well done. Don't change a thing unless you have a problem.... We made literally tons of charge air cooler castings for...
That's a pretty thin casting - we used to call it "rangy" > long and thin Do you need to improve in any way over what you are doing now? Can you...
OK, the answer to easy bottom gating Switch over to vertically parted molding Similar to this test bar perm mold [ATTACH] This system is not...
I have corresponded with Bob and also Dr Campbell about what is now being called naturally pressurized gating systems These are some very...
https://www.geminisignproducts.com/ Still made in USA Pause the Made True video at 0:17 - wow the detail on the letters! Who is the narrator -...
Separate names with a comma.
