Imperial Conduit Problem? Imperial Dies?

[GarryJ]

Evening.

I was wondering if anyone knew or has sourced Imperial metal conduit Dies?

I have a job coming up in an old mansion house where there is existing imperial conduit drops down to a consumer unit location above a ceiling which is accessible through a large hatch right at the DB. The customer however wants to raise the ceiling and I am going to need to fit new board etc which is not a problem. However there are 5 existing imperial conduits come down through the ceiling above which I am going to need to very carefully cut them at a higher location and try to run a new thread on them further up where I can bring them into a large galv joint box and get appropriate lockrings etc etc for them to remain a good earthing system with the single core pvc cables within them.
Unfortunately I would have liked to lift the floor above and take the pipes back to the next box and re jig and rewire it all from there but this is not possible due to massive newly tiled floor bathroom above.

I am aware of the imperial to metric adaptors however I need to cut the pipes further up and then re thread. Anyone any other ideas? I could obviously put earth clamps round each of the 5 pipes at a nice clean location but this would look a bit scabby I think

Cheers in advance for any thoughts

 

[KennyKen]

The only time I've threaded conduit in situe was with an small arm electric threader and a full tub of lanolin. Make sure the cuts straight. Was a pain the the --- when the cuts slightly off.

 

[Allan Hogg]

Hi, I see the conduits are in an old mansion. In this case the conduits could be gas threaded and strangely enough 3/8 gas threaded conduit is the same size as 16mm so your metric dies may do the job. I did have sets of gas dies and imperial dies when I was an apprentice in the 50s. to connect to old conduits.

 

[Pete999]

How are you going to get the cables out of the pipe to cut the pipe?

The OP I believe did say when asked if he could pull the wires back, he mentioned that the floor above was tiled, so pulling the cables back is a no no, this leads me to what davesparks has asked. someone else asked if the OP would film his attempts to do what he has suggested, hope it's posted on the forum.