How keep a threaded rod centered thru a 1,5" hole

cable glands, liquidtite strain relief hubs?

Have a helper hold it in place?

I've found duct tape to be sort of mushy. How about wrapping in Gorilla tape until it's the diameter of the hole.

wrap it with tape to fill the hole -

I tried on. It almost worked. It turned out to be a bit tall and could not get the nut to the threaded part of the pipe coming down. :(

I will look around for something that is a bit shorter.

Thanks for the idea!

I was thinking of wrapping it with something. I first thought of tape as you suggested, but then I thought of using unstranded solid copper wire. I could not find any at home, I will visit Homedepot soon.

Thanks!

You and I are on the same idea! I tried a few caps, they were too large. Two days ago I found a small pill bottle that may work.

Thanks!

Sorry for the typo, it should have been "I tried one".

Do you have a tie down strap? They're an inch or two wide. I imagine Harbor Freight would have a cheap one.

I wonder if there's a part missing. Check the box for some kind of tapered plug, look in the waste basket, try parts upside down, etc.

Failing that (oh, and do check the installation instructions - as bad as they're usually translated, once in a while there's a clue) spend another $200 on an Ender 3 3D printer and make yourself a spacer. Once you have one you'll find a million uses for it.

RTFM?

I suggested before that something was wrong, standard faucets fit standard holes.

One on the top one on the bottom indents face each other

Yeah. Call a real plumber who knows what the f*ck he's doing. LOL

Hello all,

I solved the problem by replacing the big bulky plastic piece with a smaller PVC fitting. I wanted to use a fender and a smaller washer for the Moen-supplied metal piece, but the hole was a bit small. So I turned the Moen metal piece sideways!

Thanks for your suggestions!

Here are the before and after pictures: