Cut a piece out of the copper pipe 1 long.
Tub spout copper pipe too long.
Now cut another piece of 1 2 copper 1 3 8 long you may now solder the piece in using two couplings or two sharkbite connectors.
To use the threaded adapter measure from the shoulder of the existing adapter to the wall.
Use teflon tape on all male pipe threads and caulking behind the spout base.
If it is copper inside the spout cut the male adapter off and buy the slip on spout.
Idreos md i replaced a bath tub spout with a danco spout made to replace the old moen spout.
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The faster just as appropriate but may not look that good repair is to apply enough caulking into the gap so that it can be smoothed flush with the spout.
Well you have a choice.
In my opinion i would have replaced the whole faucet.
Tub spout nipple too long after remodel.
First figure how short you are let s say you re 3 8 shy of making a connection.
Smsplumbing md the pipe looks to be soldered but your spout is still on so its hard to see the side that is in the spout.
Solder on a new adapter.
Refer to the manufacturer s specifications prior to purchasing and installing to ensure you have the appropriate length for your spout.
Then measure the distance from the surface of the wall to the back of the threaded elbow inside the wall.
For slip on tub spouts your copper pipe should be a minimum 1 and a maximum 2 7 8 in length depending on the tub spout.
I made a big mistake by cutting the 1 2 copper nub coming out of the wall to less than the minimum called for.
Measure the length of your tub spout from the back edge of the spout to the front where the threads start on the inside of the spout.
That means with the tile you can no longer reach the threads in the spout.
Reduce that measurement by 1 5 inches and cut the pipe there.
The result is the overall length of the pipe you need.
Everything else is new.
Total the two and add 1 4 inch.
You need to un screw the spout and the pipe nipple.