Screw core plugs

[Reckless Rat]

How do you get them out? I've never been brave  enough to try.

I've a well knackered block with screw in core plugs. I'll have a go at getting one out this afternoon

Steve

I have removed them only by milling them out of a scrap block. From memory they are 1 1/4" x16 t.p.i

Well I don't have a mill and I should, probably, not offend the engineering principles of both Alan and Robert that I respect greatly but I've just got one out by 'other means'. I've got it here on my desk and I agree with 1 1/4" x 16tpi which doesn't seem to match anything listed by Mr. Zeus. My more crude method didn't damage the boss in the block so it can be done

Steve

Edited to Add: See Page 114 of 'The Companion'. Size confirmed and, in 1956 at least, these were available in the electrical trade as '1 1/4" Male Bushes'.

Steve. Would I be right in assuming that the removed core plug wouldn't win any prizes in a beauty contest? What are we talking about here - big stilsons and Mr warm spanner?