Dip/strip/replace old door?

[Burnerman]

I’d leave any putty for a day or so and then go ahead with the Zinsser - its an excellent primer and seems to stick to anything. A genuine wood putty will be soft for quite a while so just bash on.
Thanks for the update!
John

 

[tiddlywinks]

Well it was a can of worms and turned into a labour of love, but thrilled and proud of the result. Thanks everyone for your advice. Now for the outside!

 

[Tigercubrider]

Looks very good.
Satisfying to see it done

 

[Burnerman]

All worth while when you see a job like that!
John