RJI don't think so. Looking around on the web this appears to be pretty much how a Partner press is generally mounted. He may have missed the most support possible by 1/8 to 1/4" but something of that sort should not result in snapping off the end on a correctly designed product.
Nate-
I know you likely want to toss it out of frustration. But while it's got this built in weak point from bad designing the rest of it can serve your purpose. Do consider making up a more suportive mount with the fingers that extend up forward under the sides of the base as I'm suggesting. An afternoon's effort and it'll be strong and reliable.
I don't think so. Looking around on the web this appears to be pretty much how a Partner press is generally mounted. He may have missed the most support possible by 1/8 to 1/4" but something of that sort should not result in snapping off the end on a correctly designed product.
Nate-
I know you likely want to toss it out of frustration. But while it's got this built in weak point from bad designing the rest of it can serve your purpose. Do consider making up a more suportive mount with the fingers that extend up forward under the sides of the base as I'm suggesting. An afternoon's effort and it'll be strong and reliable.
Mounting on soft plywood is a terrible Idea. It should have ZERO flex. Mine is mounted with stainless steel bolts trough a "1 inch" hard wood table top with large washers underneath.
This press has made over 17000 rounds.
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I don't think so. Looking around on the web this appears to be pretty much how a Partner press is generally mounted. He may have missed the most support possible by 1/8 to 1/4" but something of that sort should not result in snapping off the end on a correctly designed product.
the press was mounted as far back as possible without the arms for the ram rubbing against my bench

Are you KIDDING me ! 

OP, those have to be some of the crappiest press mounting set ups I have ever seen. The first one especially. The front bolts were mounted on a springy plywood edge while the back bolt was mounted very close to a cross member under the table top that was far more rigidly held. When you operated the press handle you caused the whole base to flex at the point it broke. The second set up wasn't any better.
A reloading bench needs to be sturdy for a reason. When you apply any force to the mandrel operating lever it is multiplied exponentially up to 15000 pounds per square inch. Did you really expect that little tab to stand up to that without some solid type of base to mount it to??? The type of press you purchased derives a lot of its strength from the base it's mounted on and if the base is weak the press will break at its weakest point and that is exactly what happened in both of those cases. It was your fault for not setting it up properly not the fault of the manufacturer or the press itself.
When a part that doesn't have a high failure rate fails multiple times for the same user, it usually user error not a manufacturing or design flaw.
Nate, invest in the "intangibles" of your set up. I.e. The stuff other than the press and dies. Time for a new workbench.



























