abby_singh•6d agoProlific Poster

Back when I started, the shop gave me a choice: learn the old manual sand rammer or go straight to the new vibratory table

This was about 15 years ago at the place in Toledo. I picked the rammer, thinking it would make me a better molder. It was hard work, my arms were sore for a month, but it taught me how to really feel for a solid mold. Now, with everything automated, I see new guys who don't get why a mold can fail if the sand isn't packed right. Does anyone who learned on the old gear still use those tricks even with the new machines?

2 comments

2 Comments

aaron_gonzalez6d ago

Remember how you had to listen for the change in sound when the sand went from loose to tight? I still watch the machine cycle time and sometimes just shut it off early to check by hand. That old feel for pressure is the only way I know if a corner is really set before we pour.

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cooper.reese6d agoMost Upvoted

But what if that old feel is just guessing and costing us time? Modern machines have sensors that measure pressure exactly, not just sound or feel. Shutting them off early to check by hand messes up the whole automated cycle. Relying on a human touch seems like a weak spot when the tech can do it the same way every single time.