Obviously I could grind and fit them to the inside of the tube or have them on the outside but theres gotta be some tricks to it.

I use a length, weld or tack up 3 of the sides, then take an angle grinder with a cutoff blade, cut it off to fit and then weld the fourth side.

I find this is easier cause I have something to hold onto while Im getting it tacked in place with the right alignment.

I have also used the tap in plastic caps that monte mentioned.

You can get some sizes at Home Depot but they are WAY less expensive from King.

The capping is for prettiness, safety sake and to seal out water.

Its a log splitter and I pay more attention to where my hands are than where my legs are.

The legs tend to run into stuff and I HATE getting cut on my own work As it turns out I may be able to cap them AND add some strength to the highest load bearing joints.

The splitter, power pack is separate, probably weighs 450lbs.

I ended up with a working height of 30 (man height versus midget height) and the front end will drop to the ground for those nasty pieces of 30 plus dia.

Log Splitter, one Log Splitter, two Log Splitter, three Log Splitter, four Log Splitter, five.

Im not saying my way is any more right than the advice the others gave you, its just different.

The one thing though that I would have done is where the bolts go through the square tubing I would have made a sleeve to go through the tubing where the bolt is going to be and TIG welded it on each side of the tubing so when you tighten the bolts you dont crush the tubing.

Added a little bit of decorative touch, definitely not a factory touch.

I will oversize it by a little bit, like a 116th both directions.

Weld it making sure the plate is barely proud of the tube on all sides.

Then when you grind the weld smooth with a flap disk you also grind the plate to the tubes shape.

What other items do you attach to the hydraulic power supply Just curious.

Welding Of Hss Square