Hi Guys,
Need some help. I have been new Robart 630 structs, which are supposed to be 1/2 inch diameter. I measured them, and they exceed 1/2 inch by 4-5 thousands of an inch. So far so good. I have brand new Sierra Precision replacement trunions. Measured the hole and it's 2-3 thousand of an inch LESS than 1/2 inch diameter. Therefore can't get the struct inside the hole. [:@]

I can try to put some extra muscle into opening the trunion hole with some leverage. No sure how much can I go before damaging the trunion. How much bigger than the struct the hole must be so that I can install it ok?

Last time I had exactly the similar issue with the Robart trunion. Ended up forcing it using a hammer. What I didn't realize its that doing that, I would be unable to get it out in the future . don't want to do the same mistake twice.

I would have though that something like this will not be required if I'm buying the right parts.

Help.

Thanks
Edgar