View Single Post
Old January 12, 2019, 08:27 PM   #48
Senior Member
Join Date: March 1, 2009
Posts: 2,306
the reason for it is shown clearly by Metal god's photos. It's that crack of light that appears due to the resizing force already stretching the press frame
if the press is standard (gray) cast iron it will neither stretch or bend even .001 without breaking. That is just the nature of cast iron, tough and rigid as heck. My opinion is any stretch or flex on a press will occur in the linkage at the pivot points. Probably a free or close running fit tolerance on the holes and pins. The two linkage arms on a RC are held on by nylok nuts. The top left arm pin is a hollow pin, I wonder if that is the weak link and designed to flex when x amount of stress is put on the frame to prevent it breaking.

But the main point is cast iron is not renowned for its flexibility or ductility
“How do I get to the next level?” Well, you get to the next level by being the first one on the range and the last one to leave.” – Jerry Miculek

Last edited by hounddawg; January 12, 2019 at 08:39 PM.
hounddawg is offline  
Page generated in 0.04431 seconds with 8 queries