Welded to the center of the circular plate is a 75mm tube of 3mm wall thickness. I used that because I had a piece lying around. It could have been square or rectangular, it just needs to be rigid enough not to flex during use.

The length of the tube depends on the distance the ram needs to descend when the lever goes up. This press is a Lee Loadmaster. Make sure the length is right for your press. For example, this length is too short for a Hornady Lock-n-Load.

At the top of the tube, I put two 150mm square plates of 3mm back to back. It was a lot cheaper than using one 6mm plate, and in retrospect, a 4mm plate would have done the job as well. 150mm square is good for most reloading press bases to bolt to.

Before you weld the square to the end of the tube, make sure the holes for the press mounting bolts are drilled. If a hole is over the mouth of the tube, weld a nut to the underside of the plate for that hole before you weld the square plate to the tube.

The mounting bolts of the wood to the press are six millimeter. I just use the max size that the press allows.