Hello Harry! Basically, I shared the same train of thought using a 15" x 15" x 2" thick slab of hardwood under the 20 ton manual hydraulic press..... I was installing new 1" wheel bearings. I had a thick, circular piece of aluminum between the bearing and press.
What I failed to do was, {and I'm sure there is more} remove the factory paint from inside the rim since my rims did not come with bearings pre-installed. Next, I did not lubricate the bearing as directed in the manual.
Well, I pressed and pressed away. I noticed on the back side of each rim as if the bead had flattened out some, a slight wave, and a paint crack in the middle of the rim. I was a little surprised and caught off guard at how easy a rim can bend, since it was about a first for me! I wonder since these are the "wide" front rims, that they would bend more easy than the "narrow" front rims...?
Anyhow, long story short, I mounted some nice looking tubeless, Carlisle turf tires and I cant even tell I had any damage as of yet done to the rims. Based on my short coming, I would have to wager that the best way to press a flimsy rim would be from hub to hub? Just wondering is all!
All and all, I'm still very happy with the work preformed! These bearings sure seem to be well installed, and on some amazing condition 1" spindles for this kid's 1450!
Thanks!