Plugging Block
Turbo Mini Forums

Now I'm attempting to dry deck the block (waterways only). I would like to use malleable iron ie bspt pipe threads as it's a compatable material. I didn't want any plugs below the surface, as I wanted to skim them flush. The small hole would have to be 1/8 bspt, but the 3 large holes arn't quite small enough to tap out 1/4 bspt and still allowing the plug to be machined flush ! The next size up is 3/8 and I was wondering if anyone new of any alternatives, as I didn't want to go as big as 3/8.

http://i28.photobucket.com/albums/c248/spe...er1/mini007.jpg

If it a'nt broke don't fix it !!!!!!!!!!!!!!!!!!!!!

i have used 3/8 with no problems, i think this is your only option

M14 is about half way between.

M14 X 1.5 is a very common size on modern compressed air fittings - you can certainly get "conventional" blanking plugs in mild steeel and brass very easily, phone a few compressed air specialists and ask if they do them in iron as well.

(by conventional I mean with a hexagon socket recess in the plug, I presume you want the raised centre type to mill off flat, that may not be so common in metric fittings).

Schrödinger's cat - so which one am I ???

I did mine M8 and 9/16unf, another option for you.

http://cgi.ebay.co.uk/CAST-IRON-BAR-25-MM-...=item45f683b7ed

Make your own any size you want

I seriously doubt it!